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1[[quoteright:304:[[Webcomic/DinosaurComics https://static.tvtropes.org/pmwiki/pub/images/qwantzknock_4750.png]]]]
2A common joke, told in the following format:
3->'''Person 1:''' Knock, knock\
4'''Person 2:''' Who's there?\
5'''Person 1:''' X.\
6'''Person 2:''' X who?\
7'''Person 1:''' [Terrible {{pun}} based on X].
8
9The format does tend to make it annoying, as the second person usually wants to hear a joke, rather than be forced to participate. But it is possible to make them funny in the right situation. Because this trope is so well-known, it's subverted more often than not, by replacing the punchline with an unexpected insult instead.
10
11A second subversion is when person 1 isn't actually trying to set up a joke, but person 2 acts like it is. Generally this leaves out the 'knock knock' being said, with person 1 knocking on an actual door.
12
13Website/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]].
14
15Compare LightBulbJoke, ChickenJoke, WhatsAHenway. See also SayingSoundEffectsOutLoud.
16
17Here is a [[https://www.youtube.com/watch?v=YJavkTKfjZU compilation]] with a lot of examples of this trope.
18
19----
20!! Examples in media:
21
22[[foldercontrol]]
23
24[[folder:Advertising]]
25* Literally for Nick Jr's teaser of ''WesternAnimation/DoraTheExplorer''. Crossing over with ''WesternAnimation/BluesClues'', where Steve meets Dora herself after putting the "Door" in "Dora".
26[[/folder]]
27
28[[folder:Anime & Manga]]
29* The original Funimation ''and'' Ocean English dub of ''Anime/DragonballZ'' included one when Vegeta and Goku were absorbed into Majin Buu's body. It's a bit out of place, but you have to admire Buu's enthusiasm.
30-->'''Majin Buu:''' Knock Knock. ''(no response)'' '''''[[LargeHam KNOOOOCK!! KNOOOOOOCK!!]]'''''\
31'''Vegeta:''' Who's there?\
32'''Majin Buu:''' Buu.\
33'''Vegeta:''' Buu who?\
34'''Majin Buu:''' Aw, don't cry -- everyone has to die sometime! ''[[EvilLaugh (laughs maniacally)]]''
35* ''Manga/JojosBizarreAdventureBattleTendency'':
36-->'''Joseph:''' Hey big guy, if you want to learn a new joke, just stop me if you heard this one. ''(knocks his head)'' Knock-knock... Knock-knock.\
37'''Santana:''' You are playing games primitive, I do not want to play games.
38[[/folder]]
39
40[[folder:Comedy]]
41* During one of Creator/MitchHedberg's stand-up routines, where he talks about hotels, he says he likes to wear "Do Not Disturb" signs around his neck "so little kids can't tell [him] knock-knock jokes. 'Hey, how you doing, nephew?' 'Knock-knock...' 'Read the sign, punk!'"
42* Creator/DennisMiller in his 1993 Creator/{{HBO}} special, after a joke bombs early on:
43-->"I like to float that one early to see how literate I can get with the audience... so I think I'll try some knock-knock jokes! Knock-knock!"\
44"Who's there?"\
45"Nobody, I just like to wield that level of power over the audience. I say 'knock-knock', thousands of people say 'Who's there?'. It's the closest I'll ever come to Jonestown."
46* A variation was once used by a popular Italian trio of comics, involving a seer.
47-->'''Guy:''' Knock knock.\
48'''Seer:''' " [[InformedAbility Who's there?]]\
49'''Guy:''' "...nice start..."
50* Played with in Music/BillBailey's ''Tinselworm'' tour:
51-->Knock knock.\
52Don't say "knock knock", just knock! What's all this "knock knock" business?\
53I'm just trying to leaven the mundanity of your day.\
54Well, don't try to leaven the mundanity of my day! If I want my mundanity leavened I'll do what I always do.\
55What's that?\
56I will [[MustacheVandalism draw a moustache]] on the TV at random with a marker pen and wait for that glorious yet fleeting moment during the day when Jeremy Paxman becomes General Kitchener.
57* Depending on your tastes, the following is either a case of DudeNotFunny or GallowsHumor:
58-->'''Person 1:''' Knock knock!\
59'''Person 2:''' Who's there?\
60'''Person 1:''' [[http://en.wikipedia.org/wiki/Amy_Fisher Amy Fisher]].\
61'''Person 2:''' Amy Fis--\
62'''Person 1:''' BANG!
63* An Israeli example of BlackComedy that featured on a televised Israeli comedy competition (and [[ItMakesSenseInContext makes more sense in context]]):
64-->"Knock knock."\
65"Who's there?"\
66"[[spoiler:[[ThoseWackyNazis GESTAPO!!]]]]" [[spoiler:May be continued "Gestapo who?" ''(smack)'' "Ve vill ask ze qvestions, not you..."]]
67** Of course, the appropriate response is,
68--->"Knock knock."\
69"Who's there?"\
70"[[spoiler:[[BadassIsraeli The Mossad.]]]]"
71* In the UsefulNotes/{{Philippines}}, a popular variation is to replace a line in a song with a knock-knock joke. Popularized in a noontime show named ''Eat Bulaga!'' An example:
72-->'''Person 1:''' Knock knock.\
73'''Person 2:''' Who's there?\
74'''Person 1:''' Riverboat.\
75'''Person 2:''' Riverboat who?\
76'''Person 1:''' [[Music/TaylorSwift Riverboat young when I first saw you...]]
77* Creator/JeffDunham's friend Achmed the Dead Terrorist provides his own joke filled with BlackComedy:
78-->'''Achmed:''' Knock knock.\
79'''Dunham:''' Who's there?\
80'''Achmed:''' Me. I keel you.
81** Reprised in an even darker fashion in a later show:
82--->'''Achmed:''' Knock, knock.\
83'''Jeff:''' Who's there?\
84'''Achmed:''' Me. I keel you again! You are such an ''idiot!'' You keep answering the door! Where I'm from, the game we teach our children is when someone says "Knock, knock", you shut the fuck up and ''hide''.
85* Comedian, Tom Rhodes has one in his stand up.
86-->"Knock knock."\
87"Who's there?"\
88"Creator/JeanClaudeVanDamme."\
89"Jean-Claude Van Damme who?"\
90"[[AppealToObscurity Oh well... that's showbiz.]]"
91* The recurring character of Mr. Knucklehead on ''Series/PeeWeesPlayhouse'' tells terrible knock-knock jokes that only he finds funny.
92-->'''Knucklehead''': Knock knock!\
93'''Pee-wee''': Who's there?\
94'''Knucklehead''': Juneau.\
95'''Pee-wee''': Juneau who?\
96'''Knucklehead''': Juneau any good knock-knock jokes?\
97'''Pee-wee''': Okay, you start.\
98'''Knucklehead''': Okay, knock knock.\
99'''Pee-wee''': Who's there?\
100'''Knucklehead''': Wh-What is this?
101[[/folder]]
102
103[[folder:Comic Books]]
104* ''ComicBook/{{Deadpool}}'':
105** This dialogue from a Secret Invasion tie-in:
106--->'''Deadpool:''' Knock, knock.\
107'''Deadpool's Clone:''' Who's there?\
108''(Deadpool shoots the clone)''\
109'''Deadpool''': And voilà!
110** After telling his life story to a movie-maker, Wade knocks on the door of his long-lost father.
111--->'''Deadpool's Father:''' Who's there?\
112'''Deadpool:''' Wade.\
113'''Deadpool's Father:''' Wade... Wade who?\
114'''Deadpool:''' ''(pulling off his mask, revealing his scarred face)'' Wade until you see what happened to me, dad.
115[[/folder]]
116
117[[folder:Fan Works]]
118* Discussed in ''WesternAnimation/TheLoudHouse'' fanfic ''Fanfic/SundaySkivvies'', Luan says that comedy is more than "silly puns and knock-knock jokes".
119* The entire B-plot of ''Fanfic/MyDreamIsYours'' revolves around this. Jamie Jam hides a clue as to the location of where she's going to attack in a knock-knock joke. When she tries to tell it to [[TheDitz Ohlm,]] however, he can't comprehend the concept of the joke itself, which eventually drives Jamie to hit her RageBreakingPoint and causes her to forget everything about the joke but the setup.
120[[/folder]]
121
122[[folder:Films -- Live-Action]]
123* In ''Film/PaulyShoreIsDead'':
124-->'''Pauly:''' Knock, knock.\
125'''Person 2:''' Who's there?\
126'''Pauly:''' Pauly Shore.\
127'''Person 2:''' Pauly Shore who?\
128'''Pauly:''' [[AppealToObscurity Exactly.]]
129* In ''Film/PoliceAcademy6CityUnderSiege'', Hightower was fighting a thug, and the thug was getting the upper hand enough to tell one of these jokes. It was so bad, it ticked Hightower off enough to punch the guy out.
130* ''Film/CatchMeIfYouCan'' combined a subversion of this with a PrecisionFStrike, to good effect.
131* From ''Film/MirrorMask'':
132-->'''Valentine:''' I'm sorry I don't have any books, puss, but I can tell you a knock-knock joke. I know the best one in the world.\
133'''Ravenous griffin:''' The best?\
134'''Valentine:''' You start.\
135'''Griffin:''' Knock knock.\
136'''Valentine:''' Who's there?\
137'''Griffin:''' ...\
138''[Valentine escapes]''
139* Hiking on the moors, David from ''Film/AnAmericanWerewolfInLondon'' tries to tell an inverted version, but Jack doesn't seem to get it:
140-->'''David:''' Say "Knock knock".\
141'''Jack:''' Knock knock.\
142'''David:''' Who's there?\
143'''Jack:''' ''(baffled)'' Who?
144* ''Film/Joker2019'': The titular character tells a horrid AntiHumor version on live TV, invoking a DudeNotFunny response from his interviewer.
145-->'''Joker:''' Knock knock.\
146'''Murray:''' Who's there?\
147'''Joker:''' It's the police, ma'am. Your son's been hit by a drunk driver. He's dead!
148* ''Film/BicentennialMan'': Sir attempts to teach Andrew humor, and the knock-knock format is the second type he tries (Andrew's {{Literal Minded}}ness causes trouble).
149-->'''Sir:''' Knock-knock.\
150'''Andrew:''' Knock-knock.\
151'''Sir:''' No, no, knock-knock, someone's at the door.\
152'''Andrew:''' Shall one get it, Sir?\
153'''Sir:''' No, no, no, you say, "Who's there?", Andrew.\
154'''Andrew:''' Who's there, Andrew.\
155'''Sir:''' No, just "Who's there?"\
156'''Andrew:''' One does not know, Sir.\
157'''Sir:''' Let's start with something a little simpler.
158* ''Film/Strays2023'' has one during a traveling montage, with the dogs mistaking a "knock-knock" as someone actually knocking on the door..
159-->'''Maggie:''' Knock-knock. (the guys bark) No, you gotta ask "Who's there?" Knock-knock. (the guys bark again) Guys, stop it! You won't even let me get to the joke part!\
160'''Hunter:''' Later, Maggie. Somebody's at the door.\
161'''Bug:''' Nothing funny about a stranger at the door.\
162'''Maggie:''' You guys are fucking morons.
163[[/folder]]
164
165[[folder:Literature]]
166* Subverted in the Literature/{{Discworld}} novel ''Literature/TheWeeFreeMen'' when Tiffany first visits Miss Tick, who is currently working out of a tent that has no actual door:
167-->'''Tiffany:''' Knock knock.\
168'''Miss Tick:''' Who's there?\
169'''Tiffany:''' Tiffany.\
170'''Miss Tick:''' Tiffany who?\
171'''Tiffany:''' Tiffany who isn't trying to make a joke.\
172'''Miss Tick:''' Ah. That sounds promising. Come in.
173* The children's book ''Camp Knock-Knock'' is about a kid having a knock-knock joke challenge involving names, and getting stuck with the name Frederick Ornat. [[spoiler:Freddie Ornat, here it comes!]]
174* Creator/DaveBarry referenced this when writing about the 2000 Olympic Games in Sydney;
175-->Everything's backwards in Australia. They have summer when we have winter, all their teenagers idolize accordion players, and the punchline of all their jokes is "Knock-knock!"
176** ''Literature/DaveBarrySleptHere'' asks readers to finish this one as an "Extra-Credit Project":
177--->"Knock knock."\
178"Who's there?"\
179"Lithuania."\
180''(Hint: this joke could involve lisping.)''
181* In Creator/MattRuff's ''Literature/SewerGasAndElectric'', in the afterlife, Abbie Hoffman is telling Creator/AynRand a KnockKnockJoke, trying to teach [[TheComicallySerious her]] about humor. .
182* No actual examples, but in ''[[Literature/{{Nightside}} Angels of Light and Darkness]]'', Suzie tells a stupid joke that ''isn't'' one, and John comments that her sense of humor is declining to the point where she'll be invoking this trope, next.
183* Then there's Creator/ShelSilverstein's love letter to knock knock jokes and being literal in general, [[WhosOnFirst The Meehoo with an Exactlywatt]]:
184-->Knock knock!\
185Who's there?\
186Me!\
187Me who?\
188That's right!\
189What's right?\
190Meehoo!\
191That's what I want to know!\
192What's what you want to know?\
193Me, WHO?\
194Yes, exactly!\
195Exactly what?\
196Yes, I have an Exactlywatt on a chain!\
197Exactly what on a chain?\
198Yes!\
199Yes what?\
200No, Exactlywatt!\
201That's what I want to know!\
202I told you -- Exactlywatt!\
203Exactly WHAT?\
204Yes!\
205Yes what?\
206Yes, it's with me!\
207What's with you?\
208Exactlywatt -- that's what's with me.\
209Me who?\
210Yes!\
211GO AWAY!\
212Knock knock...
213[[/folder]]
214
215[[folder:Live-Action TV]]
216* In ''Series/NewsRadio'', Bill tries out his new knock-knock joke on Dave:
217-->'''Bill:''' Knock, Knock.\
218'''Dave:''' Who's there?\
219'''Bill:''' Bill.\
220'''Dave:''' Bill who?\
221'''Bill:''' That's all I really have so far.
222* ''Series/BuffyTheVampireSlayer'': The Buffybot tries for an epic one:
223-->'''Willow:''' I got her head back on, didn't I? And I got her off those knock-knock jokes.\
224'''Buffybot:''' Ooh, who's there?\
225'''Xander:''' You know, if we want her to be exactly--\
226'''Spike:''' She'll never be exactly.\
227'''Xander:''' I know.\
228'''Tara:''' The only really real Buffy is really Buffy.\
229'''Giles:''' And she's gone.\
230'''Buffybot:''' "If we want her to be exactly she'll never be exactly I know the only really real Buffy is really Buffy and she's gone" who?
231* ''Series/SaturdayNightLive'':
232** A 1991 ''Film/WaynesWorld'' sketch from the first UsefulNotes/GulfWar. Wayne and Garth are geeking out over the new US smart-bombs and the novel first-person NightVision footage on CNN.
233--->'''Wayne:''' They're so accurate they can just fly in through the door. It's like, "Knock Knock!"\
234'''Garth:''' "Who's There?"\
235'''Wayne:''' "Ka!"\
236'''Garth:''' "Ka who?"\
237'''Both:''' "KA-BOOM!"
238** A more classic ''SNL'' example is a public service announcement parody regarding the uvula. One exchange goes:
239--->'''Creator/ChevyChase (as a doctor):''' Reminds me of an old joke... Knock knock!\
240'''Creator/GildaRadner (as Babs):''' Who's there?\
241'''Chevy Chase:''' Babs's Uvula!\
242'''Gilda Radner:''' Babs's Uvula who?\
243'''Chevy Chase:''' I don't know, Babs, but I do know this: you've really let your uvula go to the dogs.
244* ''Series/EverybodyLovesRaymond'': In Season 6, Debra and Marie get into one of their biggest feuds that lasted several episodes and was finally resolved with the Season 7 opener. The shot heard round the world? Marie brought some of her friends over to showcase a knock-knock joke from Michael and Geoffrey. To be fair, Debra was trying to settle the boys down before Marie came in and her insistence with them telling the joke wasn't helping matters. Its brought up again at the end of that episode when Ray and Frank get into a brief shouting match of their own taking each other's wives' sides, Frank saying that knock-knock jokes are stupid.
245* Played with in ''Series/TheOfficeUS'' episode "Golden Ticket":
246-->'''Michael:''' Knock Knock\
247'''Pam:''' Who's there?\
248'''Michael:''' Buddha\
249'''Pam:''' Buddha who?\
250'''Michael:''' Buddha this bread for me ''(produces bread and butter)''
251** Later
252--->'''Dwight:''' Knock knock!\
253'''Michael:''' Who's there?\
254'''Dwight:''' KGB.\
255'''Michael:''' KGB who?\
256'''Dwight:''' ''[interrupts Michael by slapping him]'' We will ask the questions!
257** Later, as Michael begins to yell at Dwight for slapping him:
258--->'''Jim:''' Knock knock!\
259'''Michael:''' Who's there?\
260'''Jim:''' KGB.\
261'''Michael:''' ''[suddenly excited again]'' Dwight, get the door.\
262'''Dwight:''' I'm not getting the door -- you get the door.\
263'''Jim:''' ''[more impatiently]'' Knock knock!\
264 Michael and Dwight continue to argue until Jim slaps Dwight.\
265'''Jim:''' Ze KGB vaits for no von!\
266'''Dwight:''' [to camera] He's right.
267* ''Series/FatherTed'':
268-->'''Dougal:''' Knock, knock.\
269'''Ted''': Who's there?\
270'''Dougal:''' Father Dougal [=McGuire=].\
271'''Ted:''' ''(wearily)'' Goodnight, Dougal.
272* ''Series/Studio60OnTheSunsetStrip'':
273-->'''Harriet:''' Knock-knock rook.\
274'''Dylan:''' Who's there?\
275'''Harriet:''' Orange.\
276'''Samantha:''' Banana!\
277'''Harriet:''' Orange.\
278'''Samantha:''' Banana! It's banana! Banana, banana, banana! Then you say orange. "Orange you glad I didn't say banana?" Four-year-olds are telling this joke!
279* An episode of ''Series/TheMaryTylerMooreShow'' had Ted Baxter write his own knock-knock joke, but getting stuck on the punchline:
280-->"Knock knock."\
281"Who's there?"\
282"[[http://en.wikipedia.org/wiki/Anna_Maria_Alberghetti Anna Maria Alberghetti]]."\
283"Anna Maria Alberghetti who?"\
284"..."
285** He eventually comes up with one at the end of the episode:
286--->"Anna Maria Alberghetti in a taxi, honey, better be ready 'bout half past eight..."
287** Mary thinks it was ActuallyPrettyFunny, and the group starts singing "Darktown Strutters Ball".
288* ''Series/{{Community}}'':
289** In the episode "The Science of Illusion", Britta delivers this KnockKnockJoke after being called a BuzzKill several times in the episode:
290-->"Knock knock."\
291"Who's there?"\
292"Cancer!"\
293"Oh, good, come on in, I thought it was Britta."
294** Done again in "Geothermal Escapism". For context, they're playing a game of "The Floor is Lava" that's gotten way out of hand, and are dueling to knock each other of their chairs.
295--->'''Jeff:''' Knock knock, Britta.\
296'''Britta:''' I'm not gonna to say "who's there" because someone on the floor's knocking.\
297'''Jeff:''' Well, that's lame. You ''have'' to say "who's there"!\
298'''Britta:''' FLOOR!\
299'''Jeff:''' What?\
300'''Britta:''' ''That's'' who's there!\
301'''Jeff:''' Yeah, but it's for ''you!''\
302''(at which point the scene cuts away; when it comes back...)''\
303'''Jeff:''' But the door I'm knocking on is your home, so if I'm the floor that means you're dead!\
304'''Britta:''' But if you're the floor, that means you're ''already'' dead.\
305 '''Jeff:''' Just do it right! Knock knock!\
306'''Britta:''' Knock knock!\
307''(they fight, and Britta knocks Jeff off his chair)''\
308'''Britta:''' [[ThisIsForEmphasisBitch Who's there, bitch?]] Floor! Flooooorrrr!
309* The "Knock-Knock Joke Of The Day" is a recurring segment on ''Series/YoGabbaGabba''.
310* One time in ''Series/TheWonderYears'', after an awkward silence between her and Kevin following a serious spat, Winnie signals her willingness to reconcile with a knock-knock joke:
311-->"Who's there?"\
312"Sam and Janet."\
313"Sam and Janet who?"\
314''(sings)''"Sam and Janet evening..."
315* Regularly featured as a segment on ''Series/LambChopsPlayAlong'', and honored with a song to boot.
316-->''Give me a Knock Knock Joke\
317Don't knock a Knock Knock Joke\
318They're always dumb\
319So tell me how come\
320After one I laugh and bubble up\
321After four I always double up?\
322Don't be an old slowpoke\
323Give me a Knock Knock Joke\
324Please!\
325(knock knock jokes ensue)\
326That was a Knock Knock Joke\
327I love a Knock Knock Joke!\
328They can be awful, it's true\
329Still I'm telling you\
330I love a Knock Knock Joke\
331Yeah!''
332* From ''Series/{{Loki}}'', the second season features a rather clever little joke that Mobius uses to completely wreck Brad/X-5 - who had escaped the TVA to become a famous actor - when he and Loki were interrogating him.
333-->'''Mobius''': Knock knock.
334-->'''Brad''': ''(sighs)'' Who's there?
335-->'''Mobius''': Brad.
336-->'''Brad''': Brad who?
337-->'''Mobius''': ''(shrugs and smiles)'' That's showbiz.
338* From a ''Series/{{MASH}}'' episode:
339-->'''Hawkeye:''' Knock knock.\
340'''Trapper:''' Who's there?\
341'''Hawkeye:''' Abe Lincoln.\
342'''Trapper:''' Abe Lincoln who?\
343'''Hawkeye:''' Don't you know me? ''(laughs hysterically)''\
344'''Trapper:''' ''({{facepalm}})'' That's awful.\
345'''Hawkeye:''' All right, can I do another one?\
346'''Trapper:''' No!\
347'''Hawkeye:''' Knock knock.\
348'''Trapper:''' Who's there?\
349'''Hawkeye:''' Thomas Jefferson.\
350'''Trapper:''' Thomas Jefferson who?\
351'''Hawkeye:''' Was Abe Lincoln just here? ''(laughs even more hysterically)''\
352'''Trapper:''' Hawkeye, I never liked you.
353* In an early episode of ''Series/MorkAndMindy'', Mork is still trying to get Earth humor:
354-->''(Mork is in the apartment with his buddy Eugene)''\
355'''Susan Taylor:''' ''(outside the front door)'' Knock, knock.\
356'''Mork:''' Who's there?\
357'''Susan:''' Susan.\
358'''Mork:''' Susan ''who?''\
359'''Susan:''' Susan Taylor!\
360'''Mork:''' ''(to Eugene)'' Oooh, what a terrible knock-knock joke! ''(Eugene nods in agreement)''
361* ''Series/NevermindTheBuzzcocks'' featured an example from two actors in a [[https://www.youtube.com/watch?v=LYVbpCX-2cE well-known sci-fi show]]:
362-->'''Creator/DavidTennant:''' Knock knock.\
363'''Bernard Cribbins:''' Who's there?\
364'''David Tennant:''' Doctor.\
365'''Bernard Cribbins:''' Doctor who?\
366'''David Tennant:''' [[Series/DoctorWho Correct!]]
367* ''Series/{{Babylon5}}'':
368-->'''Sheridan:''' Knock, knock.\
369'''Ivanova:''' Who's there?\
370'''Sheridan:''' Kosh.\
371'''Ivanova:''' Kosh who?\
372'''Sheridan:''' {{Gesundheit}}.
373* The faux-Japanese gameshow spoof {{Banzai}} had a challenge based on the classic ''Series/DoctorWho'' knock knock joke. [[https://www.youtube.com/watch?v=2aTObpeaAsk Viewers had to guess which of the Doctors was telling the joke.]] [[spoiler: It was Colin Baker]].
374-->Knock knock.\
375Who's there?\
376Doctor.\
377Doctor who?\
378Correct.
379* A pair from ''Series/RowanAndMartinsLaughIn'':
380-->'''Dick:''' You like knock-knock jokes?\
381'''Dan:''' Sure.\
382'''Dick:''' Okay. You start.\
383'''Dan:''' Knock knock.\
384'''Dick:''' Start again.\
385'''Dan:''' (''slightly irritated'') Knock knock.\
386'''Dick:''' (''non-plussed'') You don't know how to play!\
387"Knock knock."\
388"Who's there?"\
389"Richard Burton."\
390"Would you step out a minute? I'd like to talk to your wife!"\
391"Knock knock."\
392"Who's there?"\
393"Freeze."\
394"Freeze who?"\
395(''singing'') "Freeze a jolly good fellow, freeze a--"
396* In ''Series/TrailerParkBoys'', Ricky does a recurring, less refined version of the ''Film/CatchMeIfYouCan'' example, where right after the "who's there" line, he will say "fuck off" or go off on a long rant that doesn't fit the joke's format at all.
397* In ''[[Series/TheMuppetShow The Muppet Show: Sex and Violence]]'' pilot episode:
398** Theodore Roosevelt tells one to his fellow presidents on Mount Rushmore:
399--->'''Roosevelt:''' I've got one. Knock knock.\
400'''Lincoln:''' Who's there?\
401'''Roosevelt:''' Roosevelt.\
402'''Lincoln:''' Roosevelt who?\
403'''Roosevelt:''' Rose felt nice, but Gladys felt nicer.\
404'''Jefferson:''' Very droll. Did you get that one, George?\
405'''Washington:''' No.
406** Then George Washington tries telling one, too, although [[CannotTellAJoke without much success]]:
407--->'''Washington:''' Knock knock.\
408'''Lincoln:''' Who's there?\
409'''Washington:''' George.\
410'''Lincoln:''' George who?\
411'''Washington:''' George Washington.\
412'''Roosevelt:''' Hmmm.\
413'''Jefferson:''' I see.\
414'''Lincoln:''' Very good, George.
415* Played with on ''Series/{{Friends}}'' as Chandler rhetorically asks if he's funny while facing the door to his and Monica's apartment, and then asks what the door knows anyway; [[https://www.youtube.com/watch?v=V_GUBioNyfQ "You just like 'Knock-knock' jokes."]]
416* Done twice as TheStinger of ''Series/TheVicarOfDibley'', with Alice's usual ComicallyMissingThePoint:
417** In "The Window and the Weather", Alice tries to tell Geraldine a joke for once:
418--->'''Alice:''' Knock, knock\
419'''Geraldine:''' Who's there?\
420'''Alice:''' Ronnie.\
421'''Geraldine:''' Ronnie who?\
422'''Alice:''' Ronnie Barker! ''(cracks up)'' It would be funny if Ronnie Barker came to your door, wouldn't it? He's hilarious!\
423'''Geraldine:''' Yes. I'm not ''quite'' sure you understand how these jokes work.\
424'''Alice:''' Knock, knock.\
425'''Geraldine:''' Who's there?\
426'''Alice:''' Billy.\
427'''Geraldine:''' Billy Connolly, would it be?\
428'''Alice:''' Yes! Oh, you've heard that one. Well, it's funny, isn't it?\
429'''Geraldine:''' Not ''really'', no.\
430'''Alice:''' Don't worry, I've got hundreds more where they came from. Knock, knock.\
431'''Geraldine:''' Who the hell is it this time?\
432'''Alice:''' Groucho.\
433'''Geraldine:''' It's going to be a very long night, isn't it?
434** "The Christmas Lunch Incident" has a very drunk Jim Trott telling the "Doctor Who?" gag. (For TheStinger, see under Interrupting Cow.)
435* ''[[Series/TheElectricCompany1971 The Electric Company]]'': The Short Circus – the group of youths who regularly sang and performed in several skits – performed a song called "The Knock-Knock Rock," with five (bad) extended knock-knock puns, all with responses. One example:
436-->'''Todd Graff (who played Jesse)''': "Knock-knock."\
437'''Chorus''': "Who's there?"\
438'''Todd''': "Wanda."\
439'''Chorus''': "Wanda who?"\
440'''Todd''': "Wanda-watch me put a lampshade on my head and do a dance?"\
441'''Chorus''': "Fat chance!"
442* ''Series/SesameStreet'':
443-->'''Harvey Kneeslapper''' Knock Knock.\
444'''Man''' Who's there?\
445'''Harvey Kneeslapper''' Dion.\
446'''Man''' Dion who?\
447'''Harvey Kneeslapper''' ''(slaps the letter D on the man's chest)'' D on you! ''(laughs)''
448** Later with Telly.
449'''Knock Knock'''
450'''Who's There?'''
451'''Ach'''
452'''Ach Who?'''
453'''Oh, Sorry you sneezed. Have you got a cold?''
454* In every Hillbilly Moment on ''Series/TheAmandaShow'':
455-->'''Announcer:''' "It's time for a Hillbilly Moment!" (goofy laugh)\
456'''Lula Mae:''' "Hey, hey, knock, knock."\
457'''Enos: "Who's there?"'''\
458'''Lula Mae:''' "Uh...[object]."\
459'''Enos:''' "[object] who?"\
460'''Lula Mae:''' "I'm gonna hit you in the head with a/an [object]."\
461'''Enos:''' (laughs) "Huh?"\
462Lula Mae hits him in the head with the [object]. (Enos stumbles and sometimes falls over.)\
463'''Enos:''' (laughs) "That's a good' un!"\
464'''Lula Mae:''' "Yup."
465* Knucklehead from ''Series/PeeWeesPlayhouse'' always has these.
466* ''[[Series/CrankYankers Crank Yanker]]'' Special Ed tries telling one.
467* In the ''Series/AllInTheFamily'' flashback episode "Mike and Gloria Meet", Gloria tries breaking the ice on her blind date with Mike by asking if he likes "Knock-knock" jokes. Unfortunately, the ice gets stronger when her idea of such a joke is to ask Mike to start with "Knock-knock", and then split her sides laughing as she says "Who's there?"
468[[/folder]]
469
470[[folder:Music]]
471* 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).
472* Music/BobDylan's song "Po' Boy":
473-->Knockin' on the door, I say, "Who is it and where are you from?"\
474Man says, "Freddy!" I say, "Freddy who?" He says, "Freddy or not, here I come!"
475* From the Pigmeat Markham record "Here Comes The Judge":
476-->"Knock knock."\
477"Who's there?"\
478"Eyes."\
479"Eyes who?"\
480"Eyes yo' next door neighbor!"
481* Music/TheStatlerBrothers' "Do You Remember These" has one as the closer of this ode to nostalgia of the 1940s and 1950s:
482-->"Knock knock jokes ... Who's there?"\
483"Dewey."\
484"Dewey who?"\
485"Dewey ... remember these, ah, yes we do ... ."\
486[[/folder]]
487[[folder:Professional Wrestling]]
488* 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]]''.
489-->'''Heyman:''' Knock-knock.\
490'''Crowd (and [[Wrestling/JohnBradshawLayfield JBL]]):''' Who's there?\
491'''Heyman:''' Mike.\
492'''Crowd:''' Mike who?\
493'''Heyman:''' Mike-lient (my client) Brock Lesnar conquered the Undertaker's undefeated streak at [=WrestleMania=]!
494* Brock Lesnar also did this joke with Paul Heyman when undermining Wrestling/BobbyLashley's accomplishments on the January 10, 2022 edition of ''Raw''.
495-->'''Lesnar:''' Hey, Paulie! Knock-knock.\
496'''Crowd:''' Who's there?\
497'''Heyman:''' Brock Lesnar does a knock-knock joke in UsefulNotes/{{Philadelphia}}--I thought I saw it all... Okay, Brock. Who's there?\
498'''Lesnar:''' Bobby.\
499'''Crowd (and Heyman):''' ...Bobby who?\
500'''Lesnar:''' [[WhosonFirst Exactly.]]
501[[/folder]]
502[[folder:Radio]]
503* ''Radio/APrairieHomeCompanion'' did a whole song based on knock knock jokes which is surprisingly catchy, and can be heard [[https://www.youtube.com/watch?v=J92xKULVF8s here]] with the jokes starting at 0:40.
504* One episode of ''Radio/HelloCheeky'' subverted this delightfully.
505-->'''Tim:''' Knock knock.\
506'''John:''' Who's there?\
507'''Tim:''' Oh, you've heard it...
508[[/folder]]
509
510[[folder:Theater]]
511* An UnbuiltTrope in ''Theatre/{{Macbeth}}'', where the porter's drunken monologue contains some jokes that begin, "Knock, knock! Who's there, i' the name of Beelzebub?" The rest of the joke doesn't follow the usual punning format, but it's enough to qualify for JustForFun/TheZerothLawOfTropeExamples and possibly even the outright UrExample.
512[[/folder]]
513
514[[folder:Video Games]]
515* Ernie Steele of ''VideoGame/BackyardSports'' does not use puns in his Knock Knock Jokes, but instead stops them in the middle. For example:
516-->"Knock-knock!"\
517"Who's there?"\
518"Heh heh! Nobody's here."
519* In ''VideoGame/PlanescapeTorment'', with Morte trying to get [[MechanicalLifeforms Nordom]] to play the StraightMan:
520-->'''Morte:''' Hey, Nordom... Knock-Knock.\
521'''Nordom:''' Why do you persist in addressing me as a door?\
522'''Morte:''' It's a joke, you stupid polygon. You're supposed to answer "Who's there?"\
523'''Nordom:''' I know who is there. It is you. Why would I ask a question when I know the answer?\
524'''Morte:''' You know what, just forget it.
525* In ''VideoGame/YIIKAPostModernRPG'', Essentia gives a joke to humor Alex, even after telling him the world would be destroyed very soon.
526-->'''Essentia:''' Would you like to hear my stand up routine?\
527'''Alex:''' What? Really? Now? The world is going to end, this is no time for jokes!\
528'''Essentia:''' Knock Knock.\
529'''Alex:''' Okay, who's there?\
530'''Essentia:''' [=Y2K=].\
531'''Alex:''' [=Y2K=] who?\
532'''Essentia:''' [=Y2K=], BOO!!!!
533* In ''VideoGame/QuestForGloryIV'', this is your cue that you should NOT open a coffin, unless you have a ton of HP.
534-->Knock knock.\
535Who's this?\
536Yorg.\
537Yorg who?\
538Yorgonnaregretitifyouopenthiscoffin!
539* A joke going around the ''VideoGame/LeagueOfLegends'' community involves a pun on the champion [[LivingDream Nocturne]] and his borderline Memetic darkness inducing skill.
540-->"Noc noc."\
541"Who's there?"\
542"'''DARKNESSSS!'''"
543** Also, same game, the joke emotes of Quinn and Valor is about this trope, though Valor makes the joke with bird speak that only Quinn understands, and it's all on the expense of other Demacian champions much to Quinn's annoyance... except when the subject is Garen, in which Quinn says "Yeah, I guess he says that a lot" (referring to the memetic '''"DEMACIA!!"''').
544* [[VideoGame/{{Warcraft}} Cho'Gall]] in ''VideoGame/HeroesOfTheStorm'' has a series of StopPokingMe quotes revolving Gall egging Cho to do this trope, get refused a lot until he finally bit in for the third attempt, only to receive a YourMom joke.
545* In ''VideoGame/EarthBound1994'', one NPC tells the following joke and despairs when Ness doesn't find it funny:
546-->Knock, knock!... (who's there?)\
547Sawyer... (Sawyer who?)\
548Sawyer doin' well, I'm fine, too!
549* ''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.
550* In ''VideoGame/{{Cuphead}}'', you get to fight off [[NonIronicClown Beppi the Clown]] for the Soul Contract. One of his [[HaveANiceDeath death quotes]] falls under this if you get killed by his horse:
551-->"Knock-knock! Who's there? Charlie. Charlie who? ''Charlie horse!''"
552* In ''VideoGame/MegaManBattleNetwork3WhiteAndBlue'', if you install the "Humor" program on the navicust, pressing L will cause Megaman to say a joke instead of his usual advice. One of the possible jokes he can tell is one of these.
553-->'''Megaman:''' Knock knock!\
554'''Lan:''' Who's there?\
555'''Megaman:''' Dwayne!\
556'''Lan:''' Dwayne who?\
557'''Megaman:''' ''(suddenly showing [[ElmuhFuddSyndwome Chisao's]] mugshot)'' Dwayne da baftub, I'm dwowning!\
558'''Lan:''' ...the joke was terrible, but that was an awesome impersonation.
559* A Dumb character in ''VideoGame/TheOuterWorlds'' [[https://www.reddit.com/r/theouterworlds/comments/j41btj/made_me_laugh_for_a_good_while/ can pull this off]] with someone locked inside a room on Monarch.
560-->'''The Unplanned Variable''': Knock Knock.\
561'''Huxley''': Who's out there?\
562'''UV''': Hatch.\
563'''Huxley''': Hatch who?\
564'''Felix''': Bless you!\
565'''UV''': Bless y-- Hey! I was gonna say that!
566* In the Creator/{{Infocom}} game ''VideoGame/NordAndBertCouldntMakeHeadOrTailOfIt'', one of the levels, "Act the Part", thrusts the player into the role of an actor in a hackneyed {{Sitcom}}. Several of the gags involved are knock-knock jokes, such as "Bob" leading to a punchline courtesy of Music/TheBeachBoys, "Gorilla" leading to "Gorilla your dreams", and, finally, "Duane" leading to "Duane the bath, I'm dwowning!"
567[[/folder]]
568
569[[folder:Web Animation]]
570* Courtesy of ''[[WebAnimation/ASDFMovie asdfmovie6]]'':
571-->[[spoiler:'''Door]]:''' Knock Knock!\
572'''Guy:''' Who's there?\
573[[spoiler:'''(whack)!''']]\
574[[spoiler:'''Door:''' The door!]]
575** In the 8th one:
576--->[[spoiler:'''Reflection]]:''' Knock Knock!\
577'''Guy:''' Who's there?\
578[[spoiler:'''Reflection:''' A mirror!]]\
579'''Guy:''' I am lonely.
580* In ''WebAnimation/RedVsBlue'', Gamma was fond of telling these. His partner Agent Wyoming picked up the habit from him.
581** In season 10, a fight between York and Wyoming involves a back and forth knock knock joke that ends with a BondOneLiner.
582--->'''Wyoming:''' It's York...''(Sees York about to throw a locker at him)'' who?\
583'''York:''' It's York catch, asshole! ''(grabs a pin-up photo)'' Talk about knock knocks...
584* Subverted repeatedly in ''Webcomic/MountainTime''.
585-->'''Dave:''' I've got a joke: knock knock.\
586'''Guy:''' Hold on, Dave. I think someone's at the door.
587** Or
588--->'''Dave:''' Knock knock.\
589'''Joe:''' Can't you read the sign? No soliciting.
590* ''WebAnimation/ChiknNuggit:'' Chee tries to tell one of these to Chikn, but it doesn't get too far, as Chikn's [[MyInstinctsAreShowing dog instincts]] kick in and instead of asking who's there he starts furiously barking at the door.
591[[/folder]]
592
593[[folder:Web Comics]]
594* [[http://www.giantitp.com/comics/oots0648.html This]] ''[[Webcomic/TheOrderOfTheStick Order of the Stick]]''.
595-->'''Haley:''' Knock knock!\
596'''Crystal:''' Who's there?\
597'''Haley:''' Roland.\
598'''Crystal:''' Roland who?\
599'''Haley:''' Roland 'Itiative and his four friends Sneak Attack, Sneak Attack, Sneak Attack, and Sneak Attack.
600* A MindScrew version from ''{{Webcomic/Dolan}}''
601-->'''Dolan 1:''' Knock Knock.\
602'''Dolan 2:''' Come in.\
603'''Dolan 1:''' I was in all along.\
604''(The two [[CheshireCatGrin grin creepily]] [[BreakingTheFourthWall towards the viewer]].)''
605* Frequently set up by Dave in ''Webcomic/MountainTime'', but he never gets to finish the joke, as the listener always misinterprets the premise.
606** [[http://mountaincomics.com/comic/mountain-time-388/ How far can an unrequited knock-knock joke go?]]
607* ''Webcomic/SchlockMercenary'': Variant. Schlock yells "Knock knock!" when the team blasts open a door. Pi thinks he's telling a knock-knock joke, causing a few minutes of confusion.
608-->'''Tagon:''' New standing orders: No one is to say "knock knock" on an open channel.
609[[/folder]]
610
611[[folder:Web Original]]
612* Gloriously DoubleSubverted in [[http://www.huffingtonpost.com/2013/06/23/knock-knock-joke-on-facebook-has-amazing-payoff_n_3486861.html this post]] in which some poor guy attempts to tell a Knock Knock Joke on Facebook only for his friends to take it hilariously OffTheRails-- then still work their way around to the correct {{punchline}}.
613[[/folder]]
614
615[[folder:Web Videos]]
616* Website/ChannelAwesome:
617** A subversion from ''WebVideo/{{Kickassia}}'', when N. Bison has Dr. Insano cornered:
618--->'''N. Bison:''' Knock knock!\
619'''Dr. Insano:''' Who's there?\
620'''N. Bison:''' GUN!!! ''(points a gun at Dr. Insano)''
621** Another example from ''That Guy with the Glasses'', Lori Prince interviewing Marsh Hare and the Mad Hatter about drugs in society states he's never used any and gets called a narc by them in a variety of ways.
622--->'''Hare:''' Narc narc!\
623'''Hatter:''' Who's there?\
624'''Hare:''' A big stinking narc!\
625'''Hatter:''' I don't get it.
626* ''WebVideo/FiveSecondFilms'': In [[https://www.youtube.com/watch?v=H9I66QvKMXA "The Plagiarist"]], a street mugger accosts various people to steal their jokes. The first guy only has a "Knock, knock"-type joke... unfortunately.
627-->'''Robber:''' Gimme all your jokes!\
628'''Guy:''' Uh... "knock, knock".\
629'''Robber:''' [''DramaticGunCock''] Who's there...?
630* 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]]", where the first name is the survey taker's entire name and their last name is the number of sexual partners they had, with Jon Arbuckle, Garfield, and Odie answering the door in rotation.
631[[/folder]]
632
633[[folder:Western Animation]]
634* ''WesternAnimation/SamuraiJack'' has this memorable exchange:
635-->'''Worm:''' Knock knock.\
636'''Jack:''' ...\
637'''Worm:''' You're suppose to say, "Who's there?"\
638'''Jack:''' Um... Who is there?\
639'''Worm:''' Banana.\
640'''Jack:''' Uhh.\
641'''Worm:''' Now you say, "Banana who." Knock knock.\
642'''Jack:''' Uh.. Who is there?\
643'''Worm:''' Banana.\
644'''Jack:''' Banana who?\
645'''Worm:''' Knock knock.\
646'''Jack:''' Who's there?\
647'''Worm:''' Banana.\
648'''Jack:''' ''(annoyed)'' Banana who?\
649'''Worm:''' No wait, scratch that, try again. Knock knock.\
650'''Jack:''' ''(has an angry look)'' Who's there?\
651'''Worm:''' Now you're asking the questions.\
652'''Jack:''' ''(looks really annoyed)''\
653'''Worm:''' Ok, you start.\
654'''Jack:''' Um... Knock knock.\
655'''Worm:''' Who's there?\
656'''Jack:''' Er... I... Umm... ''Enough!''
657* From ''WesternAnimation/FamilyGuy''. Stewie becomes unbearably nice once he has a near-death experience, so much that he tells Brian a knock-knock joke that ends with "your friend, Stewie, and he'll always be there for you." Brian retaliates:
658-->'''Stewie:''' What's that you got there?\
659'''Brian:''' This is... THE most perfectly destroyed spider web.\
660'''Stewie:''' What happened to the spider?\
661'''Brian:''' Knock knock.\
662'''Stewie:''' Who's there--\
663'''Brian:''' I ATE HIM!
664* This gem from ''WesternAnimation/{{Animaniacs}}'':
665-->'''Wakko:''' Knock knock.\
666'''Scratchensniff:''' Who's there?\
667'''Wakko:''' Max.\
668'''Scratchensniff:''' Max who?\
669'''Wakko:''' Max wants to come in and go crazy!\
670'''Scratchensniff:''' Well, ok, that's not really a joke, is it? You see, because it makes no sense.\
671'''Wakko:''' It does if you know Max.\
672'''Scratchensniff:''' But I don't know Max!\
673'''Wakko:''' If you did, you'd be laughin'!
674** And now for a little subverting. First, "Windsor Hassle":
675--->'''[[UsefulNotes/TheHouseOfWindsor Queen Elizabeth]]:''' ''(knocks on door)'' Knock knock.\
676'''Wakko:''' Who's there?\
677'''Queen:''' The Queen.\
678'''Wakko:''' The Queen who?\
679'''Queen:''' The Queen of ''England!''\
680'''Wakko:''' It's not a very funny knock-knock joke ...
681** Second, with ''WesternAnimation/PinkyAndTheBrain'', from "Welcome to the Jungle":
682--->'''Snowball:''' Here's a little joke for you, Pinky. "Knock knock."\
683'''Pinky:''' Well, that's not a very funny joke, is it?
684*** Once Snowball finds someone more receptive:
685---->'''The Brain:''' Who's there?\
686'''Snowball:''' The Brain.\
687'''The Brain:''' The Brain who?\
688'''Snowball:''' [[AppealToObscurity Exactly.]]
689* In the ''WesternAnimation/{{CatDog}}'' episode "Dummy Dummy", we get this exchange:
690--> '''Cat:''' Hey, Dog, knock knock.\
691'''Dog:''' Who's there?\
692'''Cat:''' Orange.\
693'''Dog:''' ''(laughs)'' Orange! That's a good one, Cat! ''(continues laughing)'' [[ComicallyMissingThePoint What's an orange doing knocking at the door?]]
694* In [[WesternAnimation/TheAmazingWorldOfGumball The Amazing World Of Gumball]], Darwin tries to do one but fails.
695-->'''Darwin:''' How about a joke? Knock Knock.
696-->'''Richard:''' [[ComicallyMissingThePoint Dad?]]
697-->'''Darwin:''' What? No.
698-->'''Richarrld:''' ([[InelegantBlubbering starts blubbering]])
699* The [[WesternAnimation/BubbleGuppies Bubble Guppies]] episode, "Have A Cow" has a joke.
700-->'''Molly:''' That reminds me. You wanna hear a joke?
701-->'''Gill:''' Sure.
702-->'''Molly:''' Knock Knock.
703-->'''Gill:''' Who's There?
704-->'''Molly:''' Cockadoodle
705-->'''Gill:''' Cockadoodle who?
706-->'''Molly:''' What? I can't hear you.
707-->'''Gill:''' Cockadoodle who?
708-->'''Molly:''' Can you say it a little louder?
709-->'''Gill:''' COCKADOODLE WHO?
710--> '''(The hens show up looking at Gill)'''
711-->'''Gill:''' [[OhCrap Uh Oh]].
712* A ''WesternAnimation/KingOfTheHill'' episode when the gang are at the alley after Hank cried at a romance film.
713-->'''Dale:''' Bill. Knock knock.\
714'''Bill:''' Who's there?\
715'''Dale:''' Boo.\
716'''Bill:''' Boo who?\
717'''Dale:''' Boo-hoo Hank, waaaaaaaah!
718* From ''WesternAnimation/BeavisAndButthead'':
719-->'''Beavis:''' Knock knock.\
720'''Butthead''' Who's there?\
721'''Beavis:''' Ura.\
722'''Butthead:''' Ura who?\
723'''Beavis:''' You're a buttmunch, dillhole, dumbass, and a turd!
724** Later
725--->'''Butthead:''' Knock knock.\
726'''Beavis:''' Who's there?\
727'''Butthead:''' Ura.\
728'''Beavis:''' Ura who?\
729'''Butthead:''' Ura-ine. Urine.
730* An absolute classic from an episode of ''WesternAnimation/HomeMovies'', while Linda is giving birth.
731-->'''Brendon:''' '''KNOCK KNOCK!!!!!'''\
732'''Linda:''' '''WHO'S THERE?!?!?!'''\
733'''Brendon:''' [[spoiler: '''FUCK YOUUUUU!!!!!!!''']]
734** Possibly stolen from ''WesternAnimation/SpaceGhostCoastToCoast'':
735--->'''Zorak:''' Alright, here we go. Er, uh, um... Knock knock?\
736'''Space Ghost:''' Um, who's there?\
737'''Zorak:''' ''(beat)'' F*ck you.
738* ''WesternAnimation/TheSimpsons'', "Last Exit to Springfield":
739-->''[doorbell rings]''\
740'''Homer:''' Who is it?\
741'''Goon:''' Goons.\
742'''Homer:''' Who?\
743'''Goon:''' Hired goons.\
744'''Homer:''' Hired goons? ''[opens door]''
745* Subverted in ''WesternAnimation/SpongebobSquarepants'':
746-->'''Spongebob:''' Knock knock.\
747'''Squidward:''' Who's there?\
748'''Spongebob:''' [[LiteralMinded I am!]] ''(laughs)''\
749'''Squidward:''' ''(rolls eyes)''
750* In the ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' episode "Make New Friends but Keep Discord", Discord attempts to tell one, but when he says "Knock Knock", everyone just stares at him confused.
751-->'''Discord:''' You're supposed to say "Who's there?"! It's the most basic of jokes!\
752'''Maud Pie:''' [[NoYou You're the most basic of jokes]].
753* ''WesternAnimation/ElinorWondersWhy'' has a handful of these in the episode "Rocky the Rock".
754* In the ''WesternAnimation/ThreeTwoOnePenguins'' episode, "Runaway Pride at Lightstation Kilowatt", Zidgel tries to tell this to Kevin, but he just didn't get it.
755-->'''Zidgel:''' Hey, Kevin...knock, knock.\
756'''Kevin:''' Come in.\
757'''Zidgel:''' Uh, no, no, you're supposed to say, uh, "Who's there?"\
758'''Kevin:''' Who's there?\
759'''Zidgel:''' Hey, wait, not til I say knock, knock.\
760'''Kevin:''' Sorry.\
761'''Zidgel:''' Okay, okay, ready? Knock, knock.\
762'''Kevin:''' Who's there?\
763'''Zidgel:''' Dwayne.\
764'''Kevin:''' Your name's not Dwayne.\
765'''Zidgel:''' I know, I know, it's part of the joke.\
766'''Kevin:''' Oh, sorry. Come in, Dwayne!\
767'''Zidgel:''' You're not waiting for me to--
768** In case you are curious, a possible punchline for this one is "[[ElmuhFuddSyndwome Dwayne the bathtub, I'm dwowning.]]"
769* From the ''WesternAnimation/DangerMouse'' episode "The Return of Count Duckula":
770-->'''Duckula:''' Knock knock.\
771'''Coffin voice:''' Who's there?\
772'''Duckula:''' Matthew.\
773'''Coffin voice:''' Matthew who?\
774'''Duckula:''' Matthew take all the bed clothes? I want to get to sleep!
775* ''WesternAnimation/ThePowerpuffGirls1998'' and their Professor see one of these.
776-->'''Puppet pal Mitch:''' Knock knock.\
777'''Puppet pal Clem:''' Who's there?\
778'''Puppet pal Mmitch:''' Bonk.\
779'''Puppet pal Clem:''' Bonk who?\
780'''Puppet pal Mitch:''' Just Bonk.(bonks clem in the head to which Utonium and the girls laugh)
781* Susie Carmichael tries telling one to the ''WesternAnimation/{{Rugrats}}'', but they lose it.
782* In the ''WesternAnimation/ReadyJetGo'' episode “[[Recap/ReadyJetGoS2E15MyThreeSunsMagnetPI My Three Suns]]”, Face 9000 tries to tell one of these jokes, but fails because the "who" was "It's me, Face" and not a pun.
783-->'''Face''': Knock knock
784-->'''Sean''': Who’s there?
785-->'''Face''': It’s me, Face.
786-->'''Jet''': Face who?
787-->'''Face''': No, it is I, Face. I am the one who was knocking. ''[laughs at his own joke while Jet, Sunspot, and Sean stare silently in confusion]''
788* ''The All-New Popeye Hour'' short "Boo Who" plays with this. As Popeye and Olive Oyl approach the old house, a loose floorboard launches Popeye through the window above the door and into the house.
789-->''[Popeye knocks on the door from inside]''
790-->'''Olive:''' Who's there?
791-->'''Popeye:''' Boo!
792-->'''Olive:''' [[TitleDrop Boo who?]]
793-->'''Popeye:''' ''[opening the door]'' You doesn't have to cries about it, Olive!
794[[/folder]]
795
796[[folder:Interrupting Cow]]
797* There is a book that claimed that this is the greatest knock-knock joke ever:
798-->Knock-knock.\
799Who's there?\
800Interrupting cow.\
801Interrupting--\
802''MOOOOOOOOO!''
803** ''Webcomic/DominicDeegan'' a physics joke variant:
804--->Knock-knock.\
805Who's there?\
806Interrupting static coefficient of friction.\
807Interrupting--\
808''Mu!!!'' [[labelnote:Joke Explanation]]The Greek letter "µ", is pronounced "mew" and stands for the static coefficient of friction.[[/labelnote]]
809** Then there's [[https://www.youtube.com/watch?v=WqnyXj5tjP8 this one.]]
810** ''Film/HalfNelson''.
811-->'''Dan''': Knock knock.\
812'''Drey''': Who's there?\
813'''Dan''': The interrupting cow.\
814'''Drey''': The interrupting cow who?\
815'''Dan''': [has to think about it] ...Mooooo.
816** And shows up in ''Webcomic/OzyAndMillie'', but with an interrupting space alien.
817* [[https://www.youtube.com/watch?v=1DD4IOlIU64 And on]] ''Series/TheBigBangTheory'':
818-->'''Sheldon''': Knock knock.\
819'''Leonard''': Who's there?\
820'''Sheldon''': Interrupting physicist.\
821'''Leonard''': Interrupting physic—\
822'''Sheldon''': Muuuuoooon! *giggle*
823* TheStinger to ''Series/TheVicarOfDibley'' episode "The Christmas Lunch Incident":
824-->'''Geraldine''': Right. Knock, knock.\
825'''Alice''': Who's there?\
826'''Geraldine''': The interrupting sheep.\
827'''Alice''': The interrupting shee...\
828'''Geraldine''': ''Baaaaa!'' You get it?\
829'''Alice''': No, sorry, 'cos I hadn't finished my bit. Do it again, and...\
830'''Geraldine''': No, that's the joke, you see. The interrupting sheep. Always interrupts people. See?\
831'''Alice''': And that's funny?\
832'''Geraldine''': Yes, it's hilarious.\
833'''Alice''': Oh, well, in that case, I know ''hundreds'' of hilarious jokes like that.\
834'''Geraldine''': ''(already regretting this)'' Do you?\
835'''Alice''': Yeah, I do. Knock, knock.\
836'''Geraldine''': Who's there?\
837'''Alice''': Um, the interrupting cow.\
838'''Geraldine''': The interrupting...\
839'''Alice''': ''Moooo!'' Er, knock, knock.\
840'''Geraldine''': Who's there?\
841'''Alice''': The interrupting rabbit.\
842'''Geraldine''': The interrupting rabbit ... who?\
843'''Alice''': ''({{Beat}})'' What noise does a rabbit make? I know they sort of twitch their noses and, um...\
844'''Geraldine''': I wonder if I could get the Church to agree to the idea of verger culling?
845* [[https://www.youtube.com/watch?v=WqnyXj5tjP8 This version]] from a side-video of ''WebAnimation/{{Smashtasm}}'':
846-->'''1337f0x''': Knock knock.\
847'''[=Super64=]''': Who's there?\
848'''1337f0x''': Interrupting falcon.\
849'''[=Super64=]''': Interrupting falcon...\
850'''Captain Falcon''': [[MegatonPunch PUNCH!]]
851* On ''Podcast/IfIWereYou'', Jake and Amir share a variation of the joke their fans can use on Tinder to break the ice (taking advantage of the fact that you can't "interrupt" someone via text):
852-->'''You:''' Knock, knock.\
853'''Them:''' Who's there?\
854'''You:''' The interrupting cow.\
855'''Them:''' The interrupting cow who?\
856'''You:''' MOO!\
857'''You:''' Wait. Shit.
858* Music/WeirdAlYankovic did [[https://www.youtube.com/watch?v=NnA1Z9m_ZqI his take on the joke]] with an actual cow (and his father-in-law)!
859* Another popular variation.
860-->Knock-knock.\
861Who's there?\
862Interrupting cow with bulimia\
863Interrupting cow with bu-\
864''MOOBLECH!''
865* ''Webcomic/BrawlInTheFamily'' has this variation:
866-->'''Waluigi'': Knock knock.
867-->''Daisy'': Who's there?
868-->''Waluigi'': Interrupting Waluigi.
869-->''Daisy'': Interrupting Waluigi wh-
870-->''Waluigi'': [[OverlyLongGag WAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...]]
871** Daisy thought it was funny until she realized he wasn't stopping.
872* The ''Radio/AdventuresInOdyssey'' episode "Lost by a Nose" features a version of this joke where the cow is named Bob.
873[[/folder]]
874
875[[folder:And on this very wiki...]]
876-->Knock knock.\
877Who's there?\
878Creator/ChristopherWalken.\
879Christopher Walken who?\
880Christopher Walken and then walk out after his cameo.
881[[/folder]]

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