I've got a fortune script that automatically creates .sigs for my e-mails. One of the files it reads from is a listing of Bart's chalkboard quotes. For a message I was just composing, I got the following:
I WILL NOT DEMAND WHAT I'M WORTH I WILL NOT DEMAND WHAT I'M WORTH I WILL NOT DEMAND WHAT I'M WORTH I WILL NOT DEMAND WHAT I'M WORTH
Bart Simpson on chalkboard in episode 5F14