Dexter, Season 4

Cody:
Your turn, Dexter.

Dexter:
Actually, I don't know any scary stories.

Man:
Come on. Give it a shot.

Boys:
Come on.

Dexter:
All right. There's a man. You can call him the Man of Three. You can call him Trinity. You can call him anything you want but the fact is he's not a man at all, he's a monster. He was born in a bathtub filled with blood. For countless years he's roamed the countryside killing the innocent, leaving behind bits of his dead sister. Sometimes he'll sneak up on a man and raise his hammer overhead...and then he'll swing it down...

Man:
Smash his own thumb and then go crying all the way home, like a little baby.