(colloquial, often childish) A phrase used to introduce a "knock knock joke" / (colloquial, often childish) A phrase used in lieu of knocking (e.g. on the door), when it is not possible to knock.

A knock-knock joke

a verbal emulation of a knocking sound

plural of knock knock

One of a class of childish jokes told as a dialog, and usually including a pun, in the following form:

plural of knock-knock joke

Alternative spelling of knock-knock joke

plural of knock knock joke

Synonym of knock down ginger (“prank of knocking on a front door and running away”)