Lisa: Grandpa's a vampire?
Bart: We're all vampires!
Lisa: But, no! We killed Mr. Burns --
Homer: You have to kill the _head_ vampire.
Lisa: [points at Homer] _You're_ the head vampire?
Marge: No, _I'm_ the head vampire. [laughs ghoulishly]
Marge: I _do_ have a life outside this house, you know.
-- Lucrative moonlighting, "Treehouse of Horror IV"