Interesting fact:

From ‘D’oh’ to ‘Eat my shorts!’, the Simpsons catchphrases have gone down in history. Even Maggie’s pacifier sound is a catchphrase in itself! In one episode, the writers decided to make fun of the fact that Lisa doesn’t have a catchphrase, after all the characters had said theirs she said, “If anyone wants me, I'll be in my room.’