1. knock knock - Noun
2. knock knock - Interjection
knock knock (plural knock knocks)
A knock-knock joke
(colloquial, often childish) A phrase used to introduce a "knock knock joke"
Knock knock./Who's there?/Wendy./Wendy who?/Wendy you want to open the door?
(colloquial, often childish) A phrase used in lieu of knocking (e.g. on the door), when it is not possible to knock.
knock-knock
a verbal emulation of a knocking sound
knock-knock
A 1936 Associated Press newspaper article said that "What's This?" has given way to "Knock Knock!" as a favorite parlor game. Source: Internet
"'Knock Knock' Latest Nutsy Game For Parlor Amusement." Source: Internet
The article also said that Knock Knock seemed to be an outgrowth of making up sentences with difficult words, an old parlor favorite. Source: Internet
“Well the goal is to really spark children’s learning through play,” says Peter Olson, Director of Knock Knock. Source: Internet