knock knock

"Who's there?" prompt

Knock knock is the opening of a formulaic joke, mimicking a knock at the door.

The listener responds "Who's there?" and the joke unfolds through a scripted call-and-response ending in a pun: Knock knock. Who's there? Boo. Boo who? Don't cry, it's just a joke.

The format is especially popular with children.

Related

joke · humor · who's there · orange you glad · interrupting cow · wordplay · pun · comedy · funny bone · setup · comic timing · ratatat · laugh · gag · call-and-response · rap · greeting · tap

Categories
Opposites
joke structure

knock knockimprovised comedy

Unplanned comedic performance

one-liner · observational humor · shaggy dog story · stand-up routine · witty remark

humor sophistication

knock knocksatire

Mockery exposing vice

dry wit · wit · irony · sardonic humor · dry humor

Family

knock, knocks, knocked, knocking, knocker, knockers

Familiarity
Top 20,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Positive · Everyday, not technical · Rated G