Ever forgotten the ':' after the hostname of an scp command?

gistfile1.txt

# a useful addition to anyone's .bashrc
#
# Note, you don't want this function in effect on the remote host side of the scp transfer,
# so make sure to only define it for interactive shells, e.g.: wrap with: if [ ! -z "$PS1" ]

function scp() {
    if echo "$@" | grep -q ':'
    then
        /usr/bin/scp "$@"
    else
        echo -e "\e[31;1mYou want to put your what in my where!?!?\e[0m"
    fi
}

mine from KSH .profile:
wscp()
{
if [[ "$@" = +(:) ]];then
/usr/bin/scp "$@"
else
echo 'You forgot the colon dumbass!'
fi
}
alias scp=wscp