adder_enumerable.rb

def inconsistent_adder_with_enumerable(num1, num2)
  puts "Let's play a game! Me, the program, will flip a coin."
  puts "If it's heads, I'll add up your numbers,"
  puts "and if tails, I'll throw them back in your face."
  puts "Flipping a coin..."
  sleep(4)

  coin = ["heads", "tails"].sample
  
  if coin == "heads"
    puts "\nHeads. Fine, here's your sum..."
    puts [num1, num2].inject{|sum, num| sum + num}
  else
    puts "\nTails! Take your stupid numbers back!"
    puts "#{[num1, num2]}"
  end
end