Marge: What ever happened to 'please' and 'thank you'?
Homer Simpson: They killed each other. Ya know, one of those murder-suicides.
Lisa Simpson: If Scooby Doo has taught me anything, it's that there's nothing to be afraid of except crooked real estate developers.
[Lisa looks out the window to see man resembling Groundskeeper Willie digging a grave]
Lisa Simpson: Groundskeeper Willie?
Gravedigger Billy: No, I'm his cousin, Gravedigger Billy. I've been digging graves for 30 years and I've never buried anyone alive. If I did, they'd be ringing this bell.
[the bell rings]
Gravedigger Billy: Oh, that's just the wind.
[a hand emerges from the grave]
Gravedigger Billy: Oh, that's just a tree branch, with a nice watch on it.
[Billy grabs the watch and starts hitting the hand repeatedly]