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1.
A joke made about a caller at the door. It usually ends up as a play on words.

The structure of a knock-knock joke is as follows:

Person 1: Knock-knock.

Person 2: Who's there?

Person 1: (Phrase A).

Person 2: '(Phrase A)' who?

Person 1: (Phrase A) (funny punch line).
Here is a knock-knock joke:

George: Knock-knock.

Reginald: Who's there?

George: Em.

Reginald: 'Em' who?

George: Emphysema! So you better quit smoking!
by Diggity Monkeez May 19, 2005

Words related to Knock-Knock Joke

christianity door haven heaven heaven's door jesus knock-knock religion