I know many different programming languages (at least their names). I'm really only fluent in Perl 5. I have also invented a programming language named Element, in which I am also fluent and have used in some golf challenges. As an example of Element code, here is a program that inputs a number and prints all of the numbers 1-N, one per line.

_'[1+2:\
.`]

Explaining it will take forever.