[a ghostly Moe materializes behind the bar]
Moe: So, what'll it be, Homer?
Homer: Moe...gimme a beer!
Moe: No. Not unless you kill your family.
Homer: Why should I kill my family?
Moe: Uh...they'd be much happier as ghosts.
Homer: You don't look so happy.
Moe: [angry] Oh, I'm happy. I'm very happy -- la la la, la la la la.
See? [grabs Homer] Now waste your family, and I'll give you a
beer!
-- Not a compelling argument, "Treehouse of Horror V"