Lisa: You, sir, are a baboon!
Homer: [gasp] Me?
Lisa: Yes, you! Baboon! Baboon! Baboon! Baboon!
Homer: I don't think you realize what you're saying...
Lisa: BABOON! [leaves in tears]
Bart: Whoa. Somebody was bound to say it someday, I just can't believe
it was her.
-- "Lisa's Substitute"