Bash

echo 404

Try it online!

Foo

echo "404"

Try it online! (Foo)

Implicit

#«404»%&
echo "404"

Try it online! (Implicit)

Charcoal

#«404»%&⎚404»
echo "404"

Try it online! (Charcoal)

Emoji

#«404»%&⎚404»💬404💬➡
echo "404"

Try it online! (Emoji)

><>

#«404»%&⎚404»💬404💬➡;n4n0n4
echo "404"

Try it online! (><>)

rk

#«404»%&⎚404»💬404💬➡;n4n0n4
echo 404|| rk:start print: "404"

Try it online! (rk)

Brain-Flak

#«404»%&⎚404»💬404💬➡;n4n0n4
echo 404|| rk:start print: "404" (((()((()(((()()()){}){}){}){}){}){}){})

Try it online! (Brain-Flak)

C

#undef x«404»%&/*⎚404»💬404💬➡;n4n0n4
echo 404|| rk:start print: "404"
exit;*/
main(){char a[]={37,100,0};printf(a,404);}//(((()((()(((()()()){}){}){}){}){}){}){})

Try it online! (C)

Brainfuck now goes into an infinite loop after printing 404.

Set

#undef x«404»%&/*⎚404»💬404💬➡;n4n0n4
echo 404|| rk:start print: "404"
exit;*/
main(){char a[]={37,100,0};printf(a,404);}/*(((()((()(((()()()){}){}){}){}){}){}){})
set ! 52
set ! 48
set ! 52

Try it online! (Set)

Cood

#undef x«404»%&/*⎚404»💬404💬➡;n4n0n4
echo 404|| rk:start print: "404"
exit;*/
main(){char a[]={37,100,0};printf(a,404);}/*(((()((()(((()()()){}){}){}){}){}){}){})
set ! 52
set ! 48
set ! 52
Hey, waiter!
I want 404 of this.
How much is it?
*/

Try it online! (Cood)

Arcyou

#undef x«404»%&/*⎚404»💬404💬➡;n4n0n4
echo 404|| rk:start print: "404"
exit;*/
main(){char a[]={37,100,0};printf(a,404);}/*(((()((()(((()()()){}){}){}){}){}){}){})
set ! 52
set ! 48
set ! 52
Hey, waiter!
I want 404 of this.
How much is it?
(p 404);*/

Try it online! (Arcyou)

TRANSCRIPT

#undef x«404»%&/*⎚404»💬404💬➡;n4n0n4
echo 404|| rk:start print: "404"
exit;*/
main(){char a[]={37,100,0};printf(a,404);}/*(((()((()(((()()()){}){}){}){}){}){}){})
set ! 52
set ! 48
set ! 52
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
(p 404);*/

Try it online! (TRANSCRIPT)

S.I.L.O.S

#undef x«404»%&/*⎚404»💬404💬➡;n4n0n4
echo 404|| rk:start print: "404"
exit;*/
main(){char a[]={37,100,0};printf(a,404);}/*(((()((()(((()()()){}){}){}){}){}){}){})
set ! 52
set ! 48
set ! 52
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
a = 404
printInt a
(p 404);*/

Try it online! (S.I.L.O.S)

Commercial

#undef x«404»%&/*⎚404»💬404💬➡;n4n0n4
echo 404|| rk:start print: "404"
exit;*/
main(){char a[]={37,100,0};printf(a,404);}/*(((()((()(((()()()){}){}){}){}){}){}){})
set ! 52
set ! 48
set ! 52
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
a = 404
printInt a
fo now 404 dollars off!
fo has been selling out worldwide!
(p 404);*/

Try it online! (Commercial)

C++

#undef x«404»%&/*⎚404»💬404💬➡;n4n0n4
echo 404|| rk:start print: "404"
exit;*/
#include<stdio.h>
main(){char a[]={37,100,0};printf(a,404);}/*(((()((()(((()()()){}){}){}){}){}){}){})
set ! 52
set ! 48
set ! 52
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
a = 404
printInt a
fo now 404 dollars off!
fo has been selling out worldwide!
(p 404);*/

Try it online! (C++)

Braille

#undef x«404»%&/*⎚404»💬404💬➡;n4n0n4
echo 404|| rk:start print: "404"
exit;*/
#include<stdio.h>
main(){char a[]={37,100,0};printf(a,404);}/*(((()((()(((()()()){}){}){}){}){}){}){})
set ! 52
set ! 48
set ! 52
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
a = 404
printInt a
fo now 404 dollars off!
fo has been selling out worldwide!
(p 404); ⠎⡆⡎⡆⢐⠣⠃*/

Thanks to Jo King's answer for the Braille code. Try it online! (Braille)

Deadfish~

#undef x«404»%&/*⎚404»💬404💬➡iisoddddoiisoh;n4n0n4
echo 404|| rk:start print: "404"
exit;*/
#include<stdio.h>
main(){char a[]={37,100,0};printf(a,404);}/*(((()((()(((()()()){}){}){}){}){}){}){})
set ! 52
set ! 48
set ! 52
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
a = 404
printInt a
fo now 404 dollars off!
fo has been selling out worldwide!
(p 404); ⠎⡆⡎⡆⢐⠣⠃*/

Thanks again to Jo King's answer for the Deadfish~ code. Try it online! (Deadfish~)

Memescript 1.0

#undef x«404»%&/*⎚404»💬404💬➡iisoddddoiisoh;n4n0n4
echo 404|| rk:start print: "404"
exit;*/
#include<stdio.h>
main(){char a[]={37,100,0};printf(a,404);}/*<< what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
set ! 52
set ! 48
set ! 52
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
a = 404
printInt a
fo now 404 dollars off!
fo has been selling out worldwide!
(p 404); ⠎⡆⡎⡆⢐⠣⠃(((()((()(((()()()){}){}){}){}){}){}){})*/

ლ(ಠ益ಠ)ლ

ETA (boy I hate that homepage)

#undef x«404»%&/*NNNNTNNEONHSSEONTHOEON⎚404»💬404💬➡iisoddddoiisoh;n4n0n4
echo 404|| rk:start print: "404"
exit;*/
#include<stdio.h>
main(){char a[]={37,100,0};printf(a,404);}/*<< what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
set ! 52
set ! 48
set ! 52
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
a = 404
printInt a
fo now 404 dollars off!
fo has been selling out worldwide!
(p 404); ⠎⡆⡎⡆⢐⠣⠃(((()((()(((()()()){}){}){}){}){}){}){})*/

Jo King continues to aide my progress towards beating his answer. Try it online! (ETA)

Python 1

#undef x«404»%&/*NNNNTNNEONHSSEONTHOEON⎚404»💬404💬➡iisoddddoiisoh;n4n0n4
""""echo 404|| rk:start print: "404"
exit;*/
#include<stdio.h>
main(){char a[]={37,100,0};printf(a,404);}/*<< what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
set ! 52
set ! 48
set ! 52
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
a = 404
printInt a
fo now 404 dollars off!
fo has been selling out worldwide!
(p 404); ⠎⡆⡎⡆⢐⠣⠃(((()((()(((()()()){}){}){}){}){}){}){})"""
print 404#*/

Try it online! (Python 1)

Python 3

#undef x«404»%&/*NNNNTNNEONHSSEONTHOEON⎚404»💬404💬➡iisoddddoiisoh;n4n0n4
""""echo 404|| rk:start print: "404"
exit;*/
#include<stdio.h>
main(){char a[]={37,100,0};printf(a,404);}/*<< what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
set ! 52
set ! 48
set ! 52
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
a = 404
printInt a
fo now 404 dollars off!
fo has been selling out worldwide!
(p 404); ⠎⡆⡎⡆⢐⠣⠃(((()((()(((()()()){}){}){}){}){}){}){})"""
print(404)#*/

Try it online! (Python 3)

PARI/GP

#undef x«404»%&/*NNNNTNNEONHSSEONTHOEON⎚404»💬404💬➡iisoddddoiisoh;n4n0n4
""""echo 404|| rk:start print: "404"
exit;*/
#include<stdio.h>
main(){char a[]={37,100,0};printf(a,404);}/*<< what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
set ! 52
set ! 48
set ! 52
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
a = 404
printInt a ;
fo now 404 dollars off!
fo has been selling out worldwide!
(p 404); ⠎⡆⡎⡆⢐⠣⠃(((()((()(((()()()){}){}){}){}){}){}){})"""
print(404);#*/

Try it online! (PARI/GP)

Lily

#undef x«404»%&/*NNNNTNNEONHSSEONTHOEON⎚404»💬404💬➡iisoddddoiisoh;n4n0n4
""""echo 404|| rk:start print: "404"
exit;*/
#include<stdio.h>
main(){char a[]={37,100,0};printf(a,404);}/*<< what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
set ! 52
set ! 48
set ! 52
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
a = 404
printInt a ;
fo now 404 dollars off!
fo has been selling out worldwide!
(p 404); ⠎⡆⡎⡆⢐⠣⠃(((()((()(((()()()){}){}){}){}){}){}){})"""
print(404)#*/

Try it online! (Lily)

Fission

#undef x«404»%&/*NNNNTNNEONHSSEONTHOEON⎚404»💬404💬➡iisoddddoiisoh;n4n0n4
""""echo 404|| rk:start int x = 404 print: x
exit;R"404";*/
#include<stdio.h>
main(){char a[]={37,100,0};printf(a,404);}/*<< what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
set ! 52
set ! 48
set ! 52
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
a = 404
printInt a ;
fo now 404 dollars off!
fo has been selling out worldwide!
(p 404); ⠎⡆⡎⡆⢐⠣⠃(((()((()(((()()()){}){}){}){}){}){}){})"""
print(404)#*/

Decimal

#undef x«404»%&/*NNNNTNNEONHSSEONTHOEON⎚404»💬404💬➡iisoddddoiisoh;n4n0n4
""""echo 404|| rk:start int x = 404 print: x
exit;R"404";*/
#include<stdio.h>
main(){char a[]={37,100,0};printf(a,404);}/*<< what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
set ! 52
set ! 48
set ! 52
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
a = 404
printInt a ;
fo now 404 dollars off!
fo has been selling out worldwide!
(p 404); ⠎⡆⡎⡆⢐⠣⠃(((()((()(((()()()){}){}){}){}){}){}){})"""
print(404)#11404D301*/

Try it online! (Decimal) (Will work in a few minutes, there was a crappy interpreter "feature" (bug))

Cubically

#undef x«404»[:5*11-1/1]%&/*NNNNTNNEONHSSEONTHOEON⎚404»💬404💬➡iisoddddoiisoh;n4n0n4
""""echo 404|| rk:start int x = 404 print: x
exit;R"404";*/
#include<stdio.h>
main(){char a[]={37,100,0};printf(a,404);}/*<< what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
set ! 52
set ! 48
set ! 52
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
a = 404
printInt a ;
fo now 404 dollars off!
fo has been selling out worldwide!
(p 404); ⠎⡆⡎⡆⢐⠣⠃(((()((()(((()()()){}){}){}){}){}){}){})"""
print(404)#11404D301*/

Try it online! (Cubically)

Bitwise

#undef x«404»[:5*11-1/1]%&/*NNNNTNNEONHSSEONTHOEON⎚404»💬404💬➡iisoddddoiisoh;n4n0n4
""""echo 404|| rk:start int x = 404 print: x
OUT &52 &1
OUT &48 &1
OUT &52 &1
exit;R"404";*/
#include<stdio.h>
main(){char a[]={37,100,0};printf(a,404);}/*<< what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
set ! 52
set ! 48
set ! 52
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
a = 404
printInt a ;
fo now 404 dollars off!
fo has been selling out worldwide!
⠎⡆⡎⡆⢐⠣⠃((((p 404)((()(((()()()){}){}){}){}){}){}){});"""
print(404)#11404D301*/

Try it online! (Bitwise)

TinCan

#undef x«404»[:5*11-1/1]%&/*NNNNTNNEONHSSEONTHOEON⎚404»💬404💬➡iisoddddoiisoh;n4n0n4
""""echo 404|| rk:start int x = 404 print: x
OUT &52 &1
OUT &48 &1
OUT &52 &1
exit;R"404";*/
#include<stdio.h>
main(){char a[]={37,100,0};printf(a,404);}/*<< what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
set ! 52
set ! 48
set ! 52
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
a = 404
printInt a ;
fo now 404 dollars off!
fo has been selling out worldwide!
⠎⡆⡎⡆⢐⠣⠃((((p 404)((()(((()()()){}){}){}){}){}){}){});"""
print(404)#11404D301
#  -52, Z, -1                          #
#  -48, Y, -1                          #
#  -52, X, -1                          #
*/

Try it online! (TinCan)

Whispers

#undef x«404»[:5*11-1/1]%&/*NNNNTNNEONHSSEONTHOEON⎚404»💬404💬➡iisoddddoiisoh;n4n0n4
""""echo 404|| rk:start int x = 404 print: x
OUT &52 &1
OUT &48 &1
OUT &52 &1
exit;R"404";*/
#include<stdio.h>
main(){char a[]={37,100,0};printf(a,404);}/*<< what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
set ! 52
set ! 48
set ! 52
> 404
>> Output 1
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
a = 404
printInt a ;
fo now 404 dollars off!
fo has been selling out worldwide!
⠎⡆⡎⡆⢐⠣⠃((((p 404)((()(((()()()){}){}){}){}){}){}){});"""
print(404)#11404D301
#  -52, Z, -1                          #
#  -48, Y, -1                          #
#  -52, X, -1                          #
*/

Try it online! (Whispers)

Thue

#undef x«404»[:5*11-1/1]%&/*NNNNTNNEONHSSEONTHOEON⎚404»💬404💬➡iisoddddoiisoh;n4n0n4
""""echo 404|| rk:start int x = 404 print: x
OUT &52 &1
OUT &48 &1
OUT &52 &1
exit;R"404";*/
#include<stdio.h>
main(){char a[]={37,100,0};printf(a,404);}/*<< what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
x::=~404
::=
x
set ! 52
set ! 48
set ! 52
> 404
>> Output 1
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
a = 404
printInt a ;
fo now 404 dollars off!
fo has been selling out worldwide!
⠎⡆⡎⡆⢐⠣⠃((((p 404)((()(((()()()){}){}){}){}){}){}){});"""
print(404)#11404D301
#  -52, Z, -1                          #
#  -48, Y, -1                          #
#  -52, X, -1                          #
*/

Try it online! (Thue)

Emotinomicon

#undef x«404»[:5*11-1/1]%&/*NNNNTNNEONHSSEONTHOEON😒😀😒⏪😨⏩⎚404»💬404💬➡iisoddddoiisoh;n4n0n4
""""echo 404|| rk:start int x = 404 print: x R"404";
exit;
 ;
OUT &52 &1
OUT &48 &1
OUT &52 &1
*/
#include<stdio.h>
main(){char a[]={37,100,0};printf(a,404);}/*<<<<< what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
x::=~404
::=
x
set ! 52
set ! 48
set ! 52
> 404
>> Output 1
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
a = 404
printInt a ;
fo now 404 dollars off!
fo has been selling out worldwide!
#  -52, Z, -1                          #
#  -48, Y, -1                          #
#  -52, X, -1                          #
⠎⡆⡎⡆⢐⠣⠃((((p 404)((()(((()()()){}){}){}){}){}){}){});"""
print(404)#11404D301*/

No TIO link :( Edit: Fixed a bunch of languages that broke

what??!

#undef x«404»[:5*11-1/1]%&/*NN????!?!!?!??!!!???????????????!?!!!?!????!??????????????!!??!??!??!????!NNTNNEONHSSEONTHOEON😒😀😒⏪😨⏩⎚404»💬404💬➡iisoddddoiisoh;n4n0n4
""""echo 404|| rk:start int x = 404 print: x R"404";
exit;
 ;
OUT &52 &1
OUT &48 &1
OUT &52 &1
*/
#include<stdio.h>
main(){char a[]={37,100,0};printf(a,404);}/*<<<<< what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
x::=~404
::=
x
set ! 52
set ! 48
set ! 52
> 404
>> Output 1
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
a = 404
printInt a ;
fo now 404 dollars off!
fo has been selling out worldwide!
#  -52, Z, -1                          #
#  -48, Y, -1                          #
#  -52, X, -1                          #
⠎⡆⡎⡆⢐⠣⠃((((p 404)((()(((()()()){}){}){}){}){}){}){});"""
print(404)#11404D301*/

No TIO link again... gotta love useless languages

Ook! ^{_{damn that bytecount jumped}}

#undef x«404»[:5*11-1/1]%&/*NNOok! Ook! Ook! Ook? Ook? Ook. Ook. Ook. Ook. Ook? Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook? Ook! Ook? Ook. Ook. Ook. Ook! Ook. Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook! Ook. ????!?!!?!??!!!???????????????!?!!!?!????!??????????????!!??!??!??!????!NNTNNEONHSSEONTHOEON😒😀😒⏪😨⏩⎚404»💬404💬➡iisoddddoiisoh;n4n0n4
""""echo 404|| rk:start int x = 404 print: x R"404";
exit;
 ;
OUT &52 &1
OUT &48 &1
OUT &52 &1
*/
#include<stdio.h>
main(){char a[]={37,100,0};printf(a,404);}/*<<<<< what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
x::=~404
::=
x
set ! 52
set ! 48
set ! 52
> 404
>> Output 1
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
a = 404
printInt a ;
fo now 404 dollars off!
fo has been selling out worldwide!
#  -52, Z, -1                          #
#  -48, Y, -1                          #
#  -52, X, -1                          #
⠎⡆⡎⡆⢐⠣⠃((((p 404)((()(((()()()){}){}){}){}){}){}){});"""
print(404)#11404D301*/

No TIO link again D:

evil

#undef x«404»[:5*11-1/1]%&/*NNOok! Ook! Ook! Ook? Ook? Ook. Ook. Ook. Ook. Ook? Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook? Ook! Ook? Ook. Ook. Ook. Ook! Ook. Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook! Ook. ????!?!!?!??!!!???????????????!?!!!?!????!??????????????!!??!??!??!????!NNTNNEONHSSEONTHOEON😒😀😒⏪😨⏩⎚404»💬404💬➡iisoddddoiisoh;n4n0n4
""""echo 404|| rk:start int x = 404 print: x R"404";
exit;
 ;
OUT &52 &1
OUT &48 &1
OUT &52 &1
*/
#include<stdio.h>
main(){char a[]={37,100,0};printf(a,404);}/*<<<<<zaeeeaeeaaaawuuuuwaaaa what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
x::=~404
::=
x
set ! 52
set ! 48
set ! 52
> 404
>> Output 1
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
a = 404
printInt a ;
fo now 404 dollars off!
fo has been selling out worldwide!
#  -52, Z, -1                          #
#  -48, Y, -1                          #
#  -52, X, -1                          #
⠎⡆⡎⡆⢐⠣⠃((((p 404)((()(((()()()){}){}){}){}){}){}){});"""
print(404)#11404D301*/

Try it online! (evil)

lennyfuck

#undef x«404»[:5*11-1/1]%&/*NNOok! Ook! Ook! Ook? Ook? Ook. Ook. Ook. Ook. Ook? Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook? Ook! Ook? Ook. Ook. Ook. Ook! Ook. Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook! Ook. ????!?!!?!??!!!???????????????!?!!!?!????!??????????????!!??!??!??!????!NNTNNEONHSSEONTHOEON😒😀😒⏪😨⏩⎚404»💬404💬➡(♥ ͜ʖ♥)( ͡°((∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)ᕦ( ͡°ヮ ͡°)ᕥ(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)) ͡°)(∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)(> ͜ʖ<)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(> ͜ʖ<)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)(> ͜ʖ<)iisoddddoiisoh;n4n0n4
""""echo 404|| rk:start int x = 404 print: x R"404";
exit;
 ;
OUT &52 &1
OUT &48 &1
OUT &52 &1
*/
#include<stdio.h>
main(){char a[]={37,100,0};printf(a,404);}/*<<<<<zaeeeaeeaaaawuuuuwaaaa what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
x::=~404
::=
x
set ! 52
set ! 48
set ! 52
> 404
>> Output 1
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
a = 404
printInt a ;
fo now 404 dollars off!
fo has been selling out worldwide!
#  -52, Z, -1                          #
#  -48, Y, -1                          #
#  -52, X, -1                          #
⠎⡆⡎⡆⢐⠣⠃((((p 404)((()(((()()()){}){}){}){}){}){}){});"""
print(404)#11404D301*/

Wow.

Blablafuck

#undef x«404»[:5*11-1/1]%&/*NNOok! Ook! Ook! Ook? Ook? Ook. Ook. Ook. Ook. Ook? Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook? Ook! Ook? Ook. Ook. Ook. Ook! Ook. Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook! Ook. ????!?!!?!??!!!???????????????!?!!!?!????!??????????????!!??!??!??!????!NNTNNEONHSSEONTHOEON😒😀😒⏪😨⏩⎚404»💬404💬➡(♥ ͜ʖ♥)( ͡°((∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)ᕦ( ͡°ヮ ͡°)ᕥ(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)) ͡°)(∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)(> ͜ʖ<)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(> ͜ʖ<)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)(> ͜ʖ<) to for the and of to to to to to is the and a to to to to a and and and and a iisoddddoiisoh;n4n0n4
""""echo 404|| rk:start int x = 404 print: x R"404";
exit;
 ;
OUT &52 &1
OUT &48 &1
OUT &52 &1
*/
#include<stdio.h>
main(){char ab[]={37,100,0};printf(ab,404);}/*<<<<<zaeeeaeeaaaawuuuuwaaaa what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
x::=~404
::=
x
set ! 52
set ! 48
set ! 52
> 404
>> Output 1
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
ab = 404
printInt ab ;
fo now 404 dollars off!
fo has been selling out worldwide!
#  -52, Z, -1                          #
#  -48, Y, -1                          #
#  -52, X, -1                          #
⠎⡆⡎⡆⢐⠣⠃((((p 404)((()(((()()()){}){}){}){}){}){}){});"""
print(404)#11404D301*/

Stones

#undef x«404»[:5*11-1/1]%&/*NNOok! Ook! Ook! Ook? Ook? Ook. Ook. Ook. Ook. Ook? Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook? Ook! Ook? Ook. Ook. Ook. Ook! Ook. Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook! Ook. ????!?!!?!??!!!???????????????!?!!!?!????!??????????????!!??!??!??!????!NNTNNEONHSSEONTHOEON😒😀😒⏪😨⏩⎚404»💬404💬➡(♥ ͜ʖ♥)( ͡°((∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)ᕦ( ͡°ヮ ͡°)ᕥ(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)) ͡°)(∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)(> ͜ʖ<)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(> ͜ʖ<)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)(> ͜ʖ<) to for the and of to to to to to is the and a to to to to a and and and and a iisoddddoiisoh;n4n0n4
""""echo 404|| rk:start int x = 404 print: x R"404";
exit;
 ;
OUT &52 &1
OUT &48 &1
OUT &52 &1
*/
#include<stdio.h>
main(){char ab[]={37,100,0};printf(ab,404);}/*<<<<<zaeeeaeeaaaawuuuuwaaaa what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
x::=~404
::=
x
set ! 52
set ! 48
set ! 52
> 404
>> Output 1
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
ab = 404
printInt ab ;
red up two blue up red up one blue up red up two blue up
fo now 404 dollars off!
fo has been selling out worldwide!
#  -52, Z, -1                          #
#  -48, Y, -1                          #
#  -52, X, -1                          #
⠎⡆⡎⡆⢐⠣⠃((((p 404)((()(((()()()){}){}){}){}){}){}){});"""
print(404)#11404D301*/

Try it online! (Stones)

Thanks, Jo King :)

TacO

#undef x«404»[:5*11-1/1]%&/*NNOok! Ook! Ook! Ook? Ook? Ook. Ook. Ook. Ook. Ook? Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook? Ook! Ook? Ook. Ook. Ook. Ook! Ook. Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook! Ook. ????!?!!?!??!!!???????????????!?!!!?!????!??????????????!!??!??!??!????!NNTNNEONHSSEONTHOEON😒😀😒⏪😨⏩⎚404»💬404💬➡(♥ ͜ʖ♥)( ͡°((∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)ᕦ( ͡°ヮ ͡°)ᕥ(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)) ͡°)(∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)(> ͜ʖ<)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(> ͜ʖ<)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)(> ͜ʖ<) to for the and of to to to to to is the and a to to to to a and and and and a iisoddddoiisoh;n4n0n4
""""echo 404|| rk:start int x = 404 print: x R"404";
exit;
 ;
OUT &52 &1
OUT &48 &1
OUT &52 &1
*/
#include<stdio.h>
main(){char ab[]={37,100,0};printf(ab,404);}/*<<<<<zaeeeaeeaaaawuuuuwaaaa what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
x::=~404
::=
x
set ! 52
set ! 48
set ! 52
> 404
>> Output 1
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
ab = 404
printInt ab ;
red up two blue up red up one blue up red up two blue up @p404
fo now 404 dollars off!
fo has been selling out worldwide!
#  -52, Z, -1                          #
#  -48, Y, -1                          #
#  -52, X, -1                          #
⠎⡆⡎⡆⢐⠣⠃((((p 404)((()(((()()()){}){}){}){}){}){}){});"""
print(404)#11404D301*/

Try it online! (TacO)

Thanks, dylnan!

COW

#undef x«404»[:5*11-1/1]%&/*NNOok! Ook! Ook! Ook? Ook? Ook. Ook. Ook. Ook. Ook? Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook? Ook! Ook? Ook. Ook. Ook. Ook! Ook. Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook! Ook. ????!?!!?!??!!!???????????????!?!!!?!????!??????????????!!??!??!??!????!NNTNNEONHSSEONTHOEON😒😀😒⏪😨⏩⎚404»💬404💬➡(♥ ͜ʖ♥)( ͡°((∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)ᕦ( ͡°ヮ ͡°)ᕥ(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)) ͡°)(∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)(> ͜ʖ<)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(> ͜ʖ<)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)(> ͜ʖ<) to for the and of to to to to to is the and a to to to to a and and and and a iisoddddoiisoh;n4n0n4
""""echo 404|| rk:start int x = 404 print: x R"404";
exit;
 ;
OUT &52 &1
OUT &48 &1
OUT &52 &1
*/
#include<stdio.h>
main(){char ab[]={37,100,0};printf(ab,404);}/*<<<<<zaeeeaeeaaaawuuuuwaaaa what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
x::=~404
::=
x
set ! 52
set ! 48
set ! 52
> 404
>> Output 1
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
ab = 404
printInt ab ;
red up two blue up red up one blue up red up two blue up @p404
fo now 404 dollars off!
fo has been selling out worldwide!
#  -52, Z, -1                          #
#  -48, Y, -1                          #
#  -52, X, -1                          #
⠎⡆⡎⡆⢐⠣⠃((((p 404)((()(((()()()){}){}){}){}){}){}){});MoO MoO MoO MoO OOM moO OOM mOo OOM"""
print(404)#11404D301*/

Try it online! (COW)

Symbolic Brainfuck

#undef x«404»[:5*11-1/1]%&/*NNOok! Ook! Ook! Ook? Ook? Ook. Ook. Ook. Ook. Ook? Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook? Ook! Ook? Ook. Ook. Ook. Ook! Ook. Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook! Ook. ????!?!!?!??!!!???????????????!?!!!?!????!??????????????!!??!??!??!????!NNTNNEONHSSEONTHOEON😒😀😒⏪😨⏩⎚404»💬404💬➡(♥ ͜ʖ♥)( ͡°((∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)ᕦ( ͡°ヮ ͡°)ᕥ(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)) ͡°)(∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)(> ͜ʖ<)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(> ͜ʖ<)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)(> ͜ʖ<) to for the and of to to to to to is the and a to to to to a and and and and a iisoddddoiisoh;n4n0n4
""""echo 404|| rk:start int x = 404 print: x R"404";
exit;
 ;
OUT &52 &1
OUT &48 &1
OUT &52 &1
*/
#include<stdio.h>
main(){char ab[]={37,100,0};printf(ab,404);}/*<<<<<zaeeeaeeaaaawuuuuwaaaa what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
x::=~404
::=
x
set ! 52
set ! 48
set ! 52
> 404
>> Output 1
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
ab = 404
printInt ab ;
red up two blue up red up one blue up red up two blue up @p404
fo now 404 dollars off!
fo has been selling out worldwide!
#  -52, Z, -1                          #
#  -48, Y, -1                          #
#  -52, X, -1                          #
⠎⡆⡎⡆⢐⠣⠃((((p 404)((()(((()()()){}){}){}){}){}){}){});MoO MoO MoO MoO OOM moO OOM mOo OOM▲▲▲²²▲²²¡▼▼▼▼¡▲▲▲▲¡"""
print(404)#11404D301*/

Try it online! (Symbolic Brainfuck)

Underload, 1590 bytes

#undef x(😭4😲⏬😭0😲⏬😭4😲⏬«404»[:5*11-1/1]%&)(404)S/*NNOok! Ook! Ook! Ook? Ook? Ook. Ook. Ook. Ook. Ook? Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook? Ook! Ook? Ook. Ook. Ook. Ook! Ook. Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook! Ook. ????!?!!?!??!!!???????????????!?!!!?!????!??????????????!!??!??!??!????!NNTNNEONHSSEONTHOEON⎚404»💬404💬➡ to for the and of to to to to to is the and  a to to to to a and and and and a iisoddddoiisoh;n4n0n4
""""echo 404|| rk:start int x = 404 print: x R"404";
exit;
 ;
OUT &52 &1
OUT &48 &1
OUT &52 &1
*/
#include<stdio.h>
main(){char ab[]={37,100,0};printf(ab,404);}/*<<<<<zaeeeaeeaaaawuuuuwaaaa what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
x::=~404
::=
x
set ! 52
set ! 48
set ! 52
⠎⡆⡎⡆⢐⠣⠃
▲▲▲²²▲²²¡▼▼▼▼¡▲▲▲▲¡(♥ ͜ʖ♥)( ͡°((∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)ᕦ( ͡°ヮ ͡°)ᕥ(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)) ͡°)(∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)(> ͜ʖ<)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(> ͜ʖ<)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)(> ͜ʖ<)
> 404
>> Output 1
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
ab = 404
printInt ab ;
red up two blue up red up one blue up red up two blue up @p404
fo now 404 dollars off!
fo has been selling out worldwide!
#  -52, Z, -1                          #
#  -48, Y, -1                          #
#  -52, X, -1                          #
⠎⡆⡎⡆⢐⠣⠃((((p 404)((()(((()()()){}){}){}){}){}){}){});MoO MoO MoO MoO OOM moO OOM mOo OOM"""
print(404)#11404D301 */

Try it online!

Edit: Removed Brainfuck, it was too much effort.
The relevant code was -[<+>-----]<+.----.++++..

Edit: Fixed Braille; lennyfuck and Symbolic Brainfuck broke it.

Rail

#undef x(😭4😲⏬😭0😲⏬😭4😲⏬«404»[:5*11-1/1]%&)(404)S/*NNOok! Ook! Ook! Ook? Ook? Ook. Ook. Ook. Ook. Ook? Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook? Ook! Ook? Ook. Ook. Ook. Ook! Ook. Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook! Ook. ????!?!!?!??!!!???????????????!?!!!?!????!??????????????!!??!??!??!????!NNTNNEONHSSEONTHOEON⎚404»💬404💬➡ to for the and of to to to to to is the and  a to to to to a and and and and a iisoddddoiisoh;n4n0n4
""""echo 404|| rk:start int x = 404 print: x R"404";
exit;
 ;
OUT &52 &1
OUT &48 &1
OUT &52 &1
*/
#include<stdio.h>
main(){char ab[]={37,100,0};printf(ab,404);}/*<<<<<zaeeeaeeaaaawuuuuwaaaa what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
x::=~404
::=
x
set ! 52
set ! 48
set ! 52
⠎⡆⡎⡆⢐⠣⠃
▲▲▲²²▲²²¡▼▼▼▼¡▲▲▲▲¡(♥ ͜ʖ♥)( ͡°((∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)ᕦ( ͡°ヮ ͡°)ᕥ(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)) ͡°)(∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)(> ͜ʖ<)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(> ͜ʖ<)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)(> ͜ʖ<)
> 404
>> Output 1
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
ab = 404
printInt ab ;
$ 'main' (--):
 \
  \-[404\n\]o-#
red up two blue up red up one blue up red up two blue up @p404
fo now 404 dollars off!
fo has been selling out worldwide!
#  -52, Z, -1                          #
#  -48, Y, -1                          #
#  -52, X, -1                          #
⠎⡆⡎⡆⢐⠣⠃((((p 404)((()(((()()()){}){}){}){}){}){}){});MoO MoO MoO MoO OOM moO OOM mOo OOM"""
print(404)#11404D301 "*/

Try it online!

Reticular, 1876 bytes

#undef "404"p;x(😭4😲⏬😭0😲⏬😭4😲⏬«404»[:5*11-1/1]%&)(404)S/*NNOok! Ook! Ook! Ook? Ook? Ook. Ook. Ook. Ook. Ook? Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook? Ook! Ook? Ook. Ook. Ook. Ook! Ook. Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook! Ook. ????!?!!?!??!!!???????????????!?!!!?!????!??????????????!!??!??!??!????!NNTNNEONHSSEONTHOEON⎚404»💬404💬➡ to for the and of to to to to to is the and  a to to to to a and and and and a iisoddddoiisoh;n4n0n4
""""echo 404|| rk:start int x = 404 print: x R"404";
exit;
 ;
OUT &52 &1
OUT &48 &1
OUT &52 &1
*/
#include<stdio.h>
main(){char ab[]={37,100,0};printf(ab,404);}/*<<<<<zaeeeaeeaaaawuuuuwaaaa what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
x::=~404
::=
x
set ! 52
set ! 48
set ! 52
⠎⡆⡎⡆⢐⠣⠃
▲▲▲²²▲²²¡▼▼▼▼¡▲▲▲▲¡(♥ ͜ʖ♥)( ͡°((∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)ᕦ( ͡°ヮ ͡°)ᕥ(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)) ͡°)(∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)(> ͜ʖ<)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(> ͜ʖ<)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)(> ͜ʖ<)
> 404
>> Output 1
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
ab = 404
printInt ab ;
$ 'main' (--):
 \
  \-[404\n\]o-#
red up two blue up red up one blue up red up two blue up @p404
fo now 404 dollars off!
fo has been selling out worldwide!
#  -52, Z, -1                          #
#  -48, Y, -1                          #
#  -52, X, -1                          #
⠎⡆⡎⡆⢐⠣⠃((((p 404)((()(((()()()){}){}){}){}){}){}){});MoO MoO MoO MoO OOM moO OOM mOo OOM"""
print(404)#11404D301 "*/

Try it online!

Gaot++, 1929 bytes

#undef l"404"p;(😭4😲⏬😭0😲⏬😭4😲⏬«404»[:5*11-1/1]%&)(404)S/*NNOok! Ook! Ook! Ook? Ook? Ook. Ook. Ook. Ook. Ook? Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook? Ook! Ook? Ook. Ook. Ook. Ook! Ook. Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook! Ook. ????!?!!?!??!!!???????????????!?!!!?!????!??????????????!!??!??!??!????!NNTNNEONHSSEONTHOEON⎚404»💬404💬➡ to for the and of to to to to to is the and  a to to to to a and and and and a iisoddddoiisoh;n4n0n4
""""echo 404|| rk:start int x = 404 print: x R"404";
exit;
 ;
OUT &52 &1
OUT &48 &1
OUT &52 &1
*/
#include<stdio.h>
main(){char ab[]={37,100,0};printf(ab,404);}/*<<<<<zaeeeaeeaaaawuuuuwaaaa what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
x::=~404
::=
x
set ! 52
set ! 48
set ! 52
⠎⡆⡎⡆⢐⠣⠃
▲▲▲²²▲²²¡▼▼▼▼¡▲▲▲▲¡(♥ ͜ʖ♥)( ͡°((∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)ᕦ( ͡°ヮ ͡°)ᕥ(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)) ͡°)(∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)(> ͜ʖ<)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(> ͜ʖ<)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)(> ͜ʖ<)
> 404
>> Output 1
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
ab = 404
printInt ab ;
baaaaa bleeeeeeeeet bleeeeeeeeet baaaaa bleeeeeeeeet
$ 'main' (--):
 \
  \-[404\n\]o-#
red up two blue up red up one blue up red up two blue up @p404
fo now 404 dollars off!
fo has been selling out worldwide!
#  -52, Z, -1                          #
#  -48, Y, -1                          #
#  -52, X, -1                          #
⠎⡆⡎⡆⢐⠣⠃((((p 404)((()(((()()()){}){}){}){}){}){}){});MoO MoO MoO MoO OOM moO OOM mOo OOM"""
print(404)#11404D301 "*/

Try it online!

PATH, 1975 bytes

#undef l"404"p;(😭4😲⏬😭0😲⏬😭4😲⏬«404»[:5*11-1/1]%&)(404)S/*NNOok! Ook! Ook! Ook? Ook? Ook. Ook. Ook. Ook. Ook? Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook? Ook! Ook? Ook. Ook. Ook. Ook! Ook. Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook! Ook. ????!?!!?!??!!!???????????????!?!!!?!????!??????????????!!??!??!??!????!NNTNNEONHSSEONTHOEON⎚404»💬404💬➡ to for the and of to to to to to is the and  a to to to to a and and and and a iisoddddoiisoh;n4n0n4
""""echo 404|| rk:start int x = 404 print: x R"404";
exit;
 ;
OUT &52 &1
OUT &48 &1
OUT &52 &1
*/
#include<stdio.h>
main(){char ab[]={37,100,0};printf(ab,404);}/*<<<<<zaeeeaeeaaaawuuuuwaaaa what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
x::=~404
::=
x
set ! 52
set ! 48
set ! 52
⠎⡆⡎⡆⢐⠣⠃
#▲▲▲²²▲²²¡▼▼▼▼¡▲▲▲▲¡(♥ ͜ʖ♥)( ͡°((∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)ᕦ( ͡°ヮ ͡°)ᕥ(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)) ͡°)(∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)(> ͜ʖ<)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(> ͜ʖ<)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)(> ͜ʖ<)
> 404
>> Output 1
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
ab = 404
printInt ab ;
baaaaa bleeeeeeeeet bleeeeeeeeet baaaaa bleeeeeeeeet
$ 'main' (--):
 \
  \-[404\n\]o-#
{<$->}+{-----v}+.----.++++.#
    ^        <>
red up two blue up red up one blue up red up two blue up @p404
fo now 404 dollars off!
fo has been selling out worldwide!
#  -52, Z, -1                          #
#  -48, Y, -1                          #
#  -52, X, -1                          #
⠎⡆⡎⡆⢐⠣⠃((((p 404)((()(((()()()){}){}){}){}){}){}){});MoO MoO MoO MoO OOM moO OOM mOo OOM"""
print(404)#11404D301 "*/

Try it online!

Edit: Fixed Brain-Flak.

axo

#undef l" 404"p;((((\)0)0)0)0;(😭4😲⏬😭0😲⏬😭4😲⏬«404»[:5*11-1/1]%&)(404)S^/*NNNNTNNEONHSSEONTHOEONiisoddddoiisohOok! Ook! Ook! Ook? Ook? Ook. Ook. Ook. Ook. Ook? Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook? Ook! Ook? Ook. Ook. Ook. Ook! Ook. Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook! Ook. ????!?!!?!??!!!???????????????!?!!!?!????!??????????????!!??!??!??!????!⎚404»💬404💬➡ to for the and of to to to to to is the and  a to to to to a and and and and a ;n4n0n4
#11404D301
""""echo 404|| rk:start int x = 404 print: x R"404";
exit;
 ;
OUT &52 &1
OUT &48 &1
OUT &52 &1
*/
#include<stdio.h>
main(){char aA[]={37,100,0};printf(aA,404);}/*<<<<<mzaeeeaeeaaaawuuuuwaaaa what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
x::=~404
::=
x
set ! 52
set ! 48
set ! 52
⠎⡆⡎⡆⢐⠣⠃
#;▲▲▲²²▲²²¡▼▼▼▼¡▲▲▲▲¡(♥ ͜ʖ♥)( ͡°((∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)ᕦ( ͡°ヮ ͡°)ᕥ(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)) ͡°)(∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)(> ͜ʖ<)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(> ͜ʖ<)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)(> ͜ʖ<)
> 404
>> Output 1
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
ab = 404
printInt ab ;
baaaaa bleeeeeeeeet bleeeeeeeeet baaaaa bleeeeeeeeet ;
$'main':
 \
  \-[404\n\]o-#
{<$->}+{-----v}+.----.++++.#
    ^        < >
red up two blue up red up one blue up red up two blue up @p404
fo now 404 dollars off!
fo has been selling out worldwide!
#  -52, Z, -1                          #
#  -48, Y, -1                          #
#  -52, X, -1                          #
⠎⡆⡎⡆⢐⠣⠃((((p 404)((()(((()()()){}){}){}){}){}){}){})MoO MoO MoO MoO OOM moO OOM mOo OOM"""
print(404)#*/

Try it online!

Edit: Fixed 16 languages.

Monkeys

#undef l" 404"p;((((\)0)0)0)0;(😭4😲⏬😭0😲⏬😭4😲⏬«404»[:5*11-1/1]%&)(404)S^/*NNNNTNNEONHSSEONTHOEONiisoddddoiisohOok! Ook! Ook! Ook? Ook? Ook. Ook. Ook. Ook. Ook? Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook? Ook! Ook? Ook. Ook. Ook. Ook! Ook. Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook! Ook. ????!?!!?!??!!!???????????????!?!!!?!????!??????????????!!??!??!??!????!⎚404»💬404💬➡ to for the and of to to to to to is the and  a to to to to a and and and and a ;n4n0n4
#11404D301
""""echo 404|| rk:start int x = 404 print: x R"404";
exit;
 ;
OUT &52 &1
OUT &48 &1
OUT &52 &1
*/
#include<stdio.h>
main(){char aA[]={37,100,0};printf(aA,404);}/*<<<<<mzaeeeaeeaaaawuuuuwaaaa what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
x::=~404
::=
x
set ! 52
set ! 48
set ! 52
⠎⡆⡎⡆⢐⠣⠃
#;▲▲▲²²▲²²¡▼▼▼▼¡▲▲▲▲¡(♥ ͜ʖ♥)( ͡°((∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)ᕦ( ͡°ヮ ͡°)ᕥ(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)) ͡°)(∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)(> ͜ʖ<)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(> ͜ʖ<)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)(> ͜ʖ<)
> 404
>> Output 1
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
ab = 404
printInt ab ;
baaaaa bleeeeeeeeet bleeeeeeeeet baaaaa bleeeeeeeeet ;
$'main':
 \
  \-[404\n\]o-#
{<$->}+{-----v}+.----.++++.#
    ^        < >
7 UP
7 RIGHT
7 RIGHT
7 TEACH
6 BOND
6 BOND
6 BOND
5 RIGHT
5 LEFT
5 RIGHT
7 BOND
7 TEACH
5 TEACH
5 TEACH
5 TEACH
5 TEACH
6 YELL
5 FIGHT
5 FIGHT
5 FIGHT
5 FIGHT
6 YELL
5 TEACH
5 TEACH
5 TEACH
5 TEACH
6 YELL
red up two blue up red up one blue up red up two blue up @p404
fo now 404 dollars off!
fo has been selling out worldwide!
#  -52, Z, -1                          #
#  -48, Y, -1                          #
#  -52, X, -1                          #
⠎⡆⡎⡆⢐⠣⠃((((p 404)((()(((()()()){}){}){}){}){}){}){})MoO MoO MoO MoO OOM moO OOM mOo OOM"""
print(404)#*/

Try it online!

Nhohnhehr

#undef l" 404"p;((((\)0)0)0)0;(😭4😲⏬😭0😲⏬😭4😲⏬«404»[:5*11-1/1]%&)(404)S^/*NNNNTNNEONHSSEONTHOEONiisoddddoiisohOok! Ook! Ook! Ook? Ook? Ook. Ook. Ook. Ook. Ook? Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook? Ook! Ook? Ook. Ook. Ook. Ook! Ook. Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook! Ook. ????!?!!?!??!!!???????????????!?!!!?!????!??????????????!!??!??!??!????!⎚404»💬404💬➡ to for the and of to to to to to is the and  a to to to to a and and and and a ;n4n0n4
#11404D301
""""echo 404|| rk:start int x = 404 print: x R"404";
exit;
 ;
OUT &52 &1
OUT &48 &1
OUT &52 &1
*/
#include<stdio.h>
main(){char aA[]={37,100,0};printf(aA,404);}/*<<<<<mzaeeeaeeaaaawuuuuwaaaa what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
x::=~404
::=
x
set ! 52
set ! 48
set ! 52
⠎⡆⡎⡆⢐⠣⠃
#;▲▲▲²²▲²²¡▼▼▼▼¡▲▲▲▲¡(♥ ͜ʖ♥)( ͡°((∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)ᕦ( ͡°ヮ ͡°)ᕥ(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)) ͡°)(∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)(> ͜ʖ<)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(> ͜ʖ<)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)(> ͜ʖ<)
> 404
>> Output 1
Hey, waiter!
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
ab = 404
printInt ab ;
+-------+
|$0011 \|
|/0010 /|
|\ 0011\|
|/00 00/|
|\ 0011\|
|@ 0010/|
|       |
+-------+
baaaaa bleeeeeeeeet bleeeeeeeeet baaaaa bleeeeeeeeet ;
$'main':
 \
  \-[404\n\]o-#
{<$->}+{-----v}+.----.++++.#
    ^        < >
7 UP
7 RIGHT
7 RIGHT
7 TEACH
6 BOND
6 BOND
6 BOND
5 RIGHT
5 LEFT
5 RIGHT
7 BOND
7 TEACH
5 TEACH
5 TEACH
5 TEACH
5 TEACH
6 YELL
5 FIGHT
5 FIGHT
5 FIGHT
5 FIGHT
6 YELL
5 TEACH
5 TEACH
5 TEACH
5 TEACH
6 YELL
red up two blue up red up one blue up red up two blue up @p404
fo now 404 dollars off!
fo has been selling out worldwide!
#  -52, Z, -1                          #
#  -48, Y, -1                          #
#  -52, X, -1                          #
⠎⡆⡎⡆⢐⠣⠃((((p 404)((()(((()()()){}){}){}){}){}){}){})MoO MoO MoO MoO OOM moO OOM mOo OOM"""
print(404)#*/

Try it online!

xEec, 2274 bytes

#undef l" 404"p;((((\)0)0)0)0;(😭4😲⏬😭0😲⏬😭4😲⏬«404»[:5*11-1/1]%&)(404)S^/*NNNNTNNEONHSSEONTHOEONiisoddddoiisohOok! Ook! Ook! Ook? Ook? Ook. Ook. Ook. Ook. Ook? Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook? Ook! Ook? Ook. Ook. Ook. Ook! Ook. Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook! Ook. ????!?!!?!??!!!???????????????!?!!!?!????!??????????????!!??!??!??!????!⎚404»💬404💬➡ to for the and of to to to to to is the and  a to to to to a and and and and a ;n4n0n4
#11404D301
""""echo 404|| rk:start int x = 404 print: x R"404";
exit;
 ;
OUT &52 &1
OUT &48 &1
OUT &52 &1 */
#include<stdio.h>
main(){char aA[]={37,100,0};printf(aA,404);}/*<<<<<mzaeeeaeeaaaawuuuuwaaaa what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
x::=~404
::=
x
set ! 52
#;⠎⡆⡎⡆⢐⠣⠃▲▲▲²²▲²²¡▼▼▼▼¡▲▲▲▲¡(♥ ͜ʖ♥)( ͡°((∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)ᕦ( ͡°ヮ ͡°)ᕥ(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)) ͡°)(∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)(> ͜ʖ<)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(> ͜ʖ<)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)(> ͜ʖ<)
> 404
>> Output 1
I want 404 of this ;\\+--------+
How much is it     ;\\|$00110\ |
Ju is here.         \\|/00001/ |
>Ju, 404            \\|\11000\ |
>X Ju               \\|/11000/ |
ab = 404 ;          \\|\0100 \ |
printInt ab ;       \\|        | baaaaa bleeeeeeeeet
set ! 48 MoOMoOMoO  \\|  404p@ |
set ! 52 MoOOOMmoO  \\|        |
$'main': OOMmOoOOM  \\+--------+
 \-444o000o444o-{<$$^- >}+{-----v}+.----.++++.#
#  bleeeeeeeeet baaaaa ^        < bleeeeeeeeet >
2 LEFT
2 LEFT
2 UP
2 LEFT
2 TEACH
1 LEFT
1 RIGHT
1 BOND
1 BOND
1 TEACH
2 YELL
1 FIGHT
2 YELL
1 TEACH
2 YELL
red up two blue up red up one blue up red up two blue up
o now 404 dollars off!
o has been selling out worldwide!
#  -52, Z, -1                          #
#  -48, Y, -1                          #
#  -52, X, -1                          #
⡆⡎⡆⢐⠣⠃((((p 404)((()(((()()()){}){}){}){}){}){}){}) h#4 o# h#0 o# h#4 o# """
print(404)#"*/

Try it online!

edits: fixed and golfed a lot of things.

VTFF

#undef l" 404"p;((((\)0)0)0)0;(😭4😲⏬😭0😲⏬😭4😲⏬«404»[:5*11-1/1]%&)(404)S^/*NNNNTNNEONHSSEONTHOEONiisoddddoiisohOok! Ook! Ook! Ook? Ook? Ook. Ook. Ook. Ook. Ook? Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook? Ook! Ook? Ook. Ook. Ook. Ook! Ook. Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook! Ook. ????!?!!?!??!!!???????????????!?!!!?!????!??????????????!!??!??!??!????!⎚404»💬404💬➡ to for the and of to to to to to is the and  a to to to to a and and and and a ;n4n0n4
#11404D301
""""echo 404|| rk:start int x = 404 print: x rk:end R"404"*
exit;
#;
OUT &52 &1
OUT &48 &1
OUT &52 &1 */
#include<stdio.h>
main(){char aA[]={37,100,0};printf(aA,404);}/*<<<<<mzaeeeaeeaaaawuuuuwaaaa what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
x::=~404
::=
x #
set ! 52
#;⠎⡆⡎⡆⢐⠣⠃▲▲▲²²▲²²¡▼▼▼▼¡▲▲▲▲¡(♥ ͜ʖ♥)( ͡°((∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)ᕦ( ͡°ヮ ͡°)ᕥ(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)) ͡°)(∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)(> ͜ʖ<)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(> ͜ʖ<)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)(> ͜ʖ<)�������������������������������������������������������������
> 404
>> Output 1
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
b = 404
printInt b ;
set ! 48 MoOMoOMoO
set ! 52 MoOOOMmoO
+--------+
|$00110\ |
|/00001/ |
|\11000\ |
|/11000/ |
|\0100 \ |
|        | baaaaa bleeeeeeeeet
|  404p@ |
|        |
+--------+
$'main': OOMmOoOOM ;
 \-444o000o444o-{<$$^- >}+{-----v}+.----.++++.#
#  bleeeeeeeeet baaaaa ^        < bleeeeeeeeet >
2 LEFT
2 LEFT
2 UP
2 LEFT
2 TEACH
1 LEFT
1 RIGHT
1 BOND
1 BOND
1 TEACH
2 YELL
1 FIGHT
2 YELL
1 TEACH
2 YELL
red up two blue up red up one blue up red up two blue up ;
o now 404 dollars off!
o has been selling out worldwide!
#  -52, Z, -1                          #
#  -48, Y, -1                          #
#  -52, X, -1                          #
⡆⡎⡆⢐⠣⠃((((p 404)((()(((()()()){}){}){}){}){}){}){}) h#4 o# h#0 o# h#4 o# """
print(404)#"*/

K-on Fuck

#undef l" 404"p;((((\)0)0)0)0;(😭4😲⏬😭0😲⏬😭4😲⏬«404»[:5*11-1/1]%&)(404)S^/*NNNNTNNEONHSSEONTHOEONiisoddddoiisohOok! Ook! Ook! Ook? Ook? Ook. Ook. Ook. Ook. Ook? Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook? Ook! Ook? Ook. Ook. Ook. Ook! Ook. Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook! Ook. ????!?!!?!??!!!???????????????!?!!!?!????!??????????????!!??!??!??!????!⎚404»💬404💬➡ to for the and of to to to to to is the and  a to to to to a and and and and a ;n4n0n4
#11404D301
""""echo 404|| rk:start int x = 404 print: x rk:end R"404"*
exit;
#;
OUT &52 &1
OUT &48 &1
OUT &52 &1 */
#include<stdio.h>
main(){char aA[]={37,100,0};printf(aA,404);}/*<<<<<mzaeeeaeeaaaawuuuuwaaaa what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
x::=~404
::=
x #
set ! 52
#;⠎⡆⡎⡆⢐⠣⠃▲▲▲²²▲²²¡▼▼▼▼¡▲▲▲▲¡(♥ ͜ʖ♥)( ͡°((∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)ᕦ( ͡°ヮ ͡°)ᕥ(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)) ͡°)(∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)(> ͜ʖ<)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(> ͜ʖ<)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)(> ͜ʖ<)�������������������������������������������������������������うんうんうんうんたんたんたんたんうんうんうんたんうんたんうんうんうんうんうんたんたんうんたんたんうんたんたんうんたんたんうんたんたんたんたんたんうんうんたんうんたんうんたんうんうんうんたんたんうんたんたんうんたんたんうんたんたんたんうんうんうんたんうんうんたんうんうんたんうんうんたんうんたんうんうん
> 404
>> Output 1
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
b = 404
printInt b ;
set ! 48 MoOMoOMoO
set ! 52 MoOOOMmoO
+--------+
|$00110\ |
|/00001/ |
|\11000\ |
|/11000/ |
|\0100 \ |
|        | baaaaa bleeeeeeeeet
|  404p@ |
|        |
+--------+
$'main': OOMmOoOOM ;
 \-444o000o444o-{<$$^- >}+{-----v}+.----.++++.#
#  bleeeeeeeeet baaaaa ^        < bleeeeeeeeet >
2 LEFT
2 LEFT
2 UP
2 LEFT
2 TEACH
1 LEFT
1 RIGHT
1 BOND
1 BOND
1 TEACH
2 YELL
1 FIGHT
2 YELL
1 TEACH
2 YELL
red up two blue up red up one blue up red up two blue up ;
o now 404 dollars off!
o has been selling out worldwide!
#  -52, Z, -1                          #
#  -48, Y, -1                          #
#  -52, X, -1                          #
⡆⡎⡆⢐⠣⠃((((p 404)((()(((()()()){}){}){}){}){}){}){}) h#4 o# h#0 o# h#4 o# """
print(404)#"*/

Trivial brainfuck derivatives FTW.

Churro

#undef l" 404"p;((((\)0)0)0)0;(😭4😲⏬😭0😲⏬😭4😲⏬«404»[:5*11-1/1]%&)(404)S^/*NNNNTNNEONHSSEONTHOEONiisoddddoiisohOok! Ook! Ook! Ook? Ook? Ook. Ook. Ook. Ook. Ook? Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook? Ook! Ook? Ook. Ook. Ook. Ook! Ook. Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook! Ook. ????!?!!?!??!!!???????????????!?!!!?!????!??????????????!!??!??!??!????!⎚404»💬404💬➡ to for the and of to to to to to is the and  a to to to to a and and and and a ;n4n0n4
#11404D301
""""echo 404|| rk:start int x = 404 print: x rk:end R"404"*
exit;
#;
OUT &52 &1
OUT &48 &1
OUT &52 &1 */
#include
main(){char aA[]={37,100,0};printf(aA,404);}/*<<<< ͜ʖ<)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(> ͜ʖ<)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)(> ͜ʖ<)�������������������������������������������������������������うんうんうんうんたんたんたんたんうんうんうんたんうんたんうんうんうんうんうんたんたんうんたんたんうんたんたんうんたんたんうんたんたんたんたんたんうんうんたんうんたんうんたんうんうんうんたんたんうんたんたんうんたんたんうんたんたんたんうんうんうんたんうんうんたんうんうんたんうんうんたんうんたんうんうん {o}===}{======={o}{o}}{======={o}{o}===}{======={o}
> 404
>> Output 1
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
b = 404
printInt b ;
set ! 48 MoOMoOMoO
set ! 52 MoOOOMmoO
+--------+
|$00110\ |
|/00001/ |
|\11000\ |
|/11000/ |
|\0100 \ |
|        | baaaaa bleeeeeeeeet
|  404p@ |
|        |
+--------+
$'main': OOMmOoOOM ;
 \-444o000o444o-{<$$^- >}+{-----v}+.----.++++.#
#  bleeeeeeeeet baaaaa ^        < bleeeeeeeeet >
2 LEFT
2 LEFT
2 UP
2 LEFT
2 TEACH
1 LEFT
1 RIGHT
1 BOND
1 BOND
1 TEACH
2 YELL
1 FIGHT
2 YELL
1 TEACH
2 YELL
red up two blue up red up one blue up red up two blue up ;
o now 404 dollars off!
o has been selling out worldwide!
#  -52, Z, -1                          #
#  -48, Y, -1                          #
#  -52, X, -1                          #
⡆⡎⡆⢐⠣⠃((((p 404)((()(((()()()){}){}){}){}){}){}){}) h#4 o# h#0 o# h#4 o# """
print(404)#"*/

Requesting for this to be added to TIO...

Forked

#undef l" 404"p;((((\)0)0)0)0;(😭4😲⏬😭0😲⏬😭4😲⏬«404»[:5*11-1/1]%&)(404)S^/*NNNNTNNEONHSSEONTHOEONiisoddddoiisohOok! Ook! Ook! Ook? Ook? Ook. Ook. Ook. Ook. Ook? Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook? Ook! Ook? Ook. Ook. Ook. Ook! Ook. Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook! Ook. ????!?!!?!??!!!???????????????!?!!!?!????!??????????????!!??!??!??!????!⎚404»💬404💬➡ to for the and of to to to to to is the and  a to to to to a and and and and a ;n4n0n4
#11404D301          \4%0%p%&
""""echo 404|| rk:start int x = 404 print: x rk:end R"404"*
exit;
#;
OUT &52 &1
OUT &48 &1
OUT &52 &1 */
#include<stdio.h>
main(){char aA[]={37,100,0};printf(aA,404);}/*<<<<<mzaeeeaeeaaaawuuuuwaaaa what the frick frack backtrack snick snack tic tac snick snack patty wack diddily dack tic tac diddily dack frick frack quarterback frick frack
x::=~404
::=
x #
set ! 52
#;⠎⡆⡎⡆⢐⠣⠃▲▲▲²²▲²²¡▼▼▼▼¡▲▲▲▲¡(♥ ͜ʖ♥)( ͡°((∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)ᕦ( ͡°ヮ ͡°)ᕥ(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)) ͡°)(∩ ͡° ͜ʖ ͡°)⊃━☆ﾟ.*( ͡° ͜ʖ ͡°)(> ͜ʖ<)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(♥ ͜ʖ♥)(> ͜ʖ<)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)(> ͜ʖ<)�������������������������������������������������������������うんうんうんうんたんたんたんたんうんうんうんたんうんたんうんうんうんうんうんたんたんうんたんたんうんたんたんうんたんたんうんたんたんたんたんたんうんうんたんうんたんうんたんうんうんうんたんたんうんたんたんうんたんたんうんたんたんたんうんうんうんたんうんうんたんうんうんたんうんうんたんうんたんうんうん {o}===}{======={o}{o}}{======={o}{o}===}{======={o}
> 404
>> Output 1
I want 404 of this.
How much is it?
Ju is here.
>Ju, 404
>X Ju
b = 404
printInt b ;
set ! 48 MoOMoOMoO
set ! 52 MoOOOMmoO
+--------+
|$00110\ |
|/00001/ |
|\11000\ |
|/11000/ |
|\0100 \ |
|        | baaaaa bleeeeeeeeet
|  404p@ |
|        |
+--------+
$'main': OOMmOoOOM ;
 \-444o000o444o-{<$$^- >}+{-----v}+.----.++++.#
#  bleeeeeeeeet baaaaa ^        < bleeeeeeeeet >
2 LEFT
2 LEFT
2 UP
2 LEFT
2 TEACH
1 LEFT
1 RIGHT
1 BOND
1 BOND
1 TEACH
2 YELL
1 FIGHT
2 YELL
1 TEACH
2 YELL
red up two blue up red up one blue up red up two blue up ;
o now 404 dollars off!
o has been selling out worldwide!
#  -52, Z, -1                          #
#  -48, Y, -1                          #
#  -52, X, -1                          #
⡆⡎⡆⢐⠣⠃((((p 404)((()(((()()()){}){}){}){}){}){}){}) h#4 o# h#0 o# h#4 o# """
print(404)#"*/

Try it online!

My new (-ly implemented) esolang!

aaronryank/404-unique-404-page-not-found.md

C

C++

ETA (boy I hate that homepage)

Ook! damn that bytecount jumped

Underload, 1590 bytes

Reticular, 1876 bytes

Gaot++, 1929 bytes

PATH, 1975 bytes

xEec, 2274 bytes

Ook! ^{_{damn that bytecount jumped}}