knock-knock

Catch Me If You Can (2002) is an underrated movie. It has the best knock-knock joke I have ever heard.

Carl Hanratty: Well, would you like to hear me tell a joke?

Earl Amdursky: Yeah. Yeah, we'd love to hear a joke from you.

Carl Hanratty: Knock knock.

Earl Amdursky: Who's there?

Carl Hanratty: Go fuck yourselves.