Tom Hanks is one of my favourite actors and this scene here from Catch Me If You Can is one of my favourite film moments.
It goes something like this:
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 f*** yourselves.