Come on, there are lots of self-deprecating Lisp jokes, my favourite being:

An elite hacker broke into a government system and found the code of a secret NASA project. He tried to download it, but the sysadmins noticed the intrusion and eventually cut the hacker off. He only managed to get the last 40 kB of the source file and unfortunately, because the project was written in Lisp, it contained nothing but closing parens.