Math from the Simpsons — turns out that the Simpsons is chock-full-o nerd humor. I was raised by a math teacher: Dad, are you reading this?
Kid: How come we've never seen you in school?
Bart: I don't go to school.
Kid: OK, what's 2 plus 2?
Bart: 5.
Kid: Ah, his story checks out.
(site is under Slashdot load — here'a a mirror at archive.org)
(via /.)