| It's kind of a joke format, where the format is always the same and the only thing that changes is "X" below, the premise is someone is knocking at the door and the other person is asking who it is: A: Knock Knock B: Who's there A: X B: X Who A: XXXXX (this is the "punchline" of the joke) By the way, my kids think it is hilarious! |
What is Knock Knock?