"But I don't want to go among nutty people," A lice remarked.
"Oh, you can't help that," said the Nutcracker: "we're all nuts here. I'm nuts. You're nuts."
"How do you know I'm nuts?" said A lice.
"You must be," said the Nutcracker, "or you wouldn't have come here." —A lice in Wonderland, Chapter 6: Pig and Paper