History Main / KnockKnockJoke

* ''VideoGame/{{Undertale}}'': After inviting Frisk for dinner at MTT Resort, Sans recalls a story about practicing his knock-knock jokes on a big, locked door at the end of Snowdin Forest (being the exit to the Ruins), until someone from behind the door (who's revealed to be Toriel) responds back, with him delivering the punchline "dishes a very bad joke." Toriel apparently found it howlingly funny and eventually started coming up with knock-knock jokes of her own, until eventually she asks Sans to promise her to protect any human that left the ruins, with Sans noting that Frisk "[[MoodWhiplash would be dead where [they] stand]]" had he not made the promise to Toriel.

* ''VideoGame/{{Undertale}}'': After inviting Frisk for dinner at MTT Resort, Sans recalls a story about practicing his knock-knock jokes on a big, locked door at the end of Snowdin Forest (being the exit to the Ruins), until someone from behind the door (who's revealed to be Toriel) responds back, with him delivering the punchline "dishes a very bad joke." Toriel apparently found it howlingly funny and eventually started coming up with knock-knock jokes of her own, until eventually she asks Sans to promise her to protect any human that left the ruins, with Sans noting that Frisk "[[MoodWhiplash would be dead where they stand]]", had he not made the promise to her.

* ''VideoGame/{{Undertale}}'': After inviting Frisk for dinner at MTT Resort, Sans recalls a story about practicing his knock-knock jokes on a big, locked door at the end of Snowdin Forest (being the exit to the Ruins), until someone from behind the door (who's revealed to be Toriel) responds back, with him delivering the punchline "dishes a very bad joke." Toriel apparently found it howlingly funny and eventually started coming up with knock-knock jokes of her own, until eventually she asks Sans to promise her that he'll protect Frisk when they leave the Ruins.

* In ''VideoGame/{{Undertale}}'', Sans tells a story about telling a knock-knock joke with the punchline "dishes a very bad joke." The recipient apparently found howlingly funny and eventually started coming up with knock-knock jokes of her own.

* In ''VideoGame/EarthBound'', one NPC tells the following joke and despairs when Ness doesn't find it funny:

* A ''WesternAnimation/KingOfTheHill'' episode when the gang are at the alley after Hank cried in a romance film.
-->'''Dale:''' Knock knock.\\

'''Dale:''' Boo\\

'''Dale:''' Boohoo Hank.

'''Heyman:''' Brock Lesnar does a knock-knock joke in Philadelphia--I thought I saw it all... Okay, Brock. Who's there?\\

* Used as an OverlyLongGag (as in four-and-a-half hours long) in the ''WebVideo/LasagnaCat'' video "[[https://www.youtube.com/watch?v=KgmoMO66uPg Sex Survey Results]]".

'''Lesnar:''' Exactly.

* In ''Machinima/RedVsBlue'', Gamma was fond of telling these. His partner Agent Wyoming picked up the habit from him.

* [[https://www.youtube.com/watch?v=WqnyXj5tjP8 This version]] from a side-video of ''Machinima/{{Smashtasm}}'':

Wiki/TheOtherWiki has [[http://en.wikipedia.org/wiki/Knock-knock_joke an article]] on this plus examples, [[JustForFun/TheZerothLawOfTropeExamples even prototypical ones from Shakespeare's time]]. A bunch of Troper-supplied examples can be found [[JustForFun/HeardAnyGoodJokesLately here]].

* The first movement of Music/PDQBach's "Knock, Knock" cantata ("Ida who?" / "Ida-ream of Jeannie with the light brown hair"), and its alternate version, "Sam and Janet" (which plays on a certain ''Theatre/SouthPacific'' song).

* ''WesternAnimation/ThePowerpuffGirls'' and their Professor see one of these.

* Susie Carmichael tries telling one to the ''WesternAnimation/RugRats'', but they lose it.

--->'''Wakko:''' Knock knock.\\

'''The crowd:''' Who's there?\\

'''Heyman (and the crowd):''' ...Bobby who?\\

-->'''Lesnar:''' Knock-knock.\\
'''Heyman (and the crowd):''' Who's there?\\

'''Heyman (and the crowd):''' Bobby who?\\

* Wrestling/PaulHeyman seems to be fond of this, one when he gloated about Wrestling/BrockLesnar breaking Wrestling/TheUndertaker's undefeated Wrestling/WrestleMania streak on the April 28, 2014 edition of ''[[Wrestling/{[WWERAW}} Raw]]''.

* Brock Lesnar also did this joke with Paul Heyman when undermining Wrestling/BobbyLashley's accomplishments on the January 10, 2022 edition of ''Raw''.

* ''Series/NevermindTheBuzzcocks'' featured an ActuallyPrettyFunny example from two actors in a [[https://www.youtube.com/watch?v=LYVbpCX-2cE well-known sci-fi show]]:

* In an episode of ''WesternAnimation/ElinorWondersWhy'' called "Rocky the Rock", Ari tells knock knock jokes to his friends, which makes a rock smile. The episode starts where Ari tells Elinor:
-->'''Ari:''' Knock knock.\\
'''Elinor:''' Who's there?\\
'''Ari:''' Owls say.\\
'''Elinor:''' Owls say who?\\
'''Ari:''' Yes, that's exactly what they say.
** And then to Olive:
-->'''Ari:''' Knock knock.\\
'''Olive:''' Who's there?\\
'''Ari:''' Says.\\
'''Olive:''' Says who?\\
'''Ari:''' Says me, that's who.
** After finding the smiling rock, Ari pretends to be his voice when telling the rock this:
-->'''Ari:''' Knock knock. (in Rocky's voice) Who's there? (in normal voice) Nose. (in Rocky's voice) Nose who? (in normal voice) I "nose" plenty of more knock knock jokes!
** He has another one at the end of the episode:
-->'''Ari:''' Knock knock. (in Rocky's voice) Who's there? (in normal voice) Ari. (in Rocky's voice) Ari who? (in normal voice) Ari'nt you glad I didn't say knock knock again?\\

'''Person 1:''' [[{{Pun}} Terrible pun]] based on X.

* From Music/TheStatlerBrothers' "Do You Remember These":
--> Knock-knock jokes,\\
Who's there?\\
Dewey!\\
Dewey who?\\
Dewey remember these, yes we do.