"Should I explain to you the meaning of a closed door in a whorehouse?"A couple is about to have sex, or are in the midst of the act, but another person interrupts somehow. They have to stop to deal with the interruption. This trope can be played for comedy, drama or both. Can often lead to a Relationship Reveal. If they choose to keep going, it's Coitus Uninterruptus. If they try and keep things secret (if there is a knock on the door), it could lead to a Closet Shuffle. A subtrope of Moment Killer. Often followed by a "Don't you people know how to knock?", because no one ever locks their door when they're getting intimate. Compare to Caught with Your Pants Down for the solo version of the trope, and Chaos While They're Not Looking for the violent version. A supertrope of Primal Scene and Parents Walk In at the Worst Time. Sister Trope to Sorry to Interrupt.
— Tyrion Lannister, Game of Thrones
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- IKEA's It's time to move out ad.
Anime and Manga
- Lupin III: Given that they're both on Interpol's "Most Wanted" list and have numerous enemies, Lupin and Fujiko have had their romantic evenings ruined more than once:
- The Secret of Twilight Gemini: About midway through the film, Sadachiyo and his men burst into their hotel room to assassinate Lupin, just as he and Fujiko were getting started. Which forced him to bail in his underwear and left Fujiko stark naked, with nothing but a bedsheet to defend herself!
- The Columbus Files begins with them meeting over a candlelit dinner to discuss the contents of the stolen Columbus Egg, in Fujiko's possession. The discussion makes its way into the bedroom, where once again, they get interrupted just as they're about to shag. This time, by way of Macross Missile Massacre!
- Happens near the beginning of Vitamin. The protagonist's boyfriend forces himself onto her while they're in school, and a classmate sees them.
- Phantom Quest Corp.: In incident file 03, Detective Karino drops by Mr. Nagasuki's office to question him, just as things were heating up between Nagasuki and his secretary! So when he opens the door, he gets an eyefull, though the audience doesn't get to see anything.
(secretary screams from off camera)
Mr. Nagasuki: (angrily at Karino) GET THE HELL OUT OF HERE!!
Karino: (closes door, snickering) Hot action.
- Invoked in School Days (adapting a possible event from the original visual novel). Sekai's friend Nanami Kanroji and her sempai/boyfriend try to get some "quality time" in the middle of a school festival, so they end up having sex in the rest area booth. They're not interrupted but they are filmed by Otome's Girl Posse, who are such nasty bitches that they show the tape to the whole school. The upperclassmen think this is funny, but poor Nanami has an Heroic B.S.O.D..
- Double invoked, as almost immediately afterwards, we see that Makoto was caught on tape too... having sex with Otome. And this is how Sekai learns that, after she and Makoto cheated on Kotonoha, she is now the one cheated on.
- The first part is expanded on in other media (namely, the game's Updated Re-release), and it's even worse. One: Nanami and her boyfriend weren't filmed by Otome's Girl Posse, but by Nanami's sempai and rival Chie Ashikaga; she releases the video out of spite against her.. Two: we see that they're actually quite kinky in regards to sex (into master/servant, sex roleplaying, etc.) No wonder poor Nanami completely shut down: not only she and her boyfriend were caught doing the deed, but their kinks were exposed to everyone in the school.
- In Fushigi Yuugi, Suboshi needs to talk to his boss Nakago and goes into his tent. Nakago is having sex with his and Suboshi's fellow Seiryuu Senshi Soi...
- Variable Geo: Reimi and her personal assistant, Washio, finally get some "alone time" halfway through episode 2, where they have a romantic rooftop tryst in her private rose garden. At least, until Chiho ruins it for her, by interrupting them during her escape attempt. Which annoys Reimi, sparking an improptu match between her and Chiho.
- In the manga version of Neon Genesis Evangelion, Kaji and Misato had a heart-to-heart talk about their past and when they’re about to make out, Asuka barges in. Hilarity Ensues.
- Miss Kobayashi's Dragon Maid: Tohru ends up barging in when Kanna and Saikawa were about to - in Kanna's words - "get closer". Did we forget to mention that Kanna and Saikawa are both in Elementary School?
- In issue 2 of Friday The13th Pamelas Tale, Barry convinces Claudette to go off into the woods to have sex with him. The two are unaware that Jason had followed them. Barry and Claudette are also unaware that he's watching them making love on a log. Jason attacks Barry while he's mounted Claudette in a rear entry position. Jason attacks Barry by leaping on his back and begins pummeling him. Barry then puches Jason and throws him off the log in a rage. Barry apologizes to Jason and wanting him to stop. Barry can only watch helplessly when he fails to catch up with Jason and then helplessly watch him fall off the Crystal Lake dock, flail around and drown in the lake.
- Serenity: Leaves on the Wind: In an apparent Mythology Gag to Kaylee's backstory scene in the Firefly episode "Out of Gas", Mal calls down to the engine room to tell Kaylee to fire up the engines and catches her in the middle of having sex with Simon.
- Angel Love of her eponymous series catches her next-door neighbor Everett and his girlfriend Lola smooching in the dark in her apartment twice in one issue.
- Advice and Trust: In chapter 7, Shinji and Asuka enter Misato's apartment, talking about having a shower and intercourse right away when Kaji walks into them. Oops.
- A Crown of Stars: In chapter 65, Shinji and Asuka are in the middle of sex when Ching phones Asuka to remind them that they have to return to the stage shortly (appending a "Sorry because I guess what I am interrupting" comment).
- Higher Learning: In chapter 16 Shinji and Asuka are about to have sex in the tube... and Misato comes home right when Shinji is about to enter the bathroom, leading both teenagers to hurriedly pretend that nothing was happening.
- Played for Laughs in the appropriately titled, This Closet's Lock is Broken, when Soifon accidentally bursts in on Yoruichi while she's having sex... with a mod soul designed to look and act like her!
- In a chapter of Harry Potter and the Deathly Hallows, Ginny leads Harry to her bedroom (with the door closed) to give him a birthday present to "remember her by", and they begin to kiss very passionately, but are interrupted by Ron barging into the room. There are many stories that speculate that, had Ron not interrupted, Harry and Ginny would have had sex.
- This trope probably scars Kagami for life in Stars Above when she accidentally walks in on Tsukasa and Miyuki.
- My Immortal. When Draco and Ebony have sex in the Forbidden Forest, Dumbledore barges in out of nowhere, yelling "WHAT THE HELL ARE YOU DOING YOU MOTHERFUKERS!"
- Empath in the Empath: The Luckiest Smurf story "Days Of Auld Lang Smurf" interrupts Papa Smurf's private moment inside the Imaginarium with a recreated fantasy version of his wife just as they were about to kiss. Of course, Empath doesn't know that this is what Papa Smurf was doing with his time away from the other Smurfs until he saw Papa Smurf in a bathrobe emerging from a Smurf house.
- The Infinite Loops love to play this for laughs. Taken to an extreme where five separate people walk in on Spike and Rarity, apparently during the same loop, and react completely differently to the situation.
- The Wrong Reflection has Fleet Admiral Riker call up Eleya to give her some info and orders right when she and her boyfriend are in the middle of foreplay.
- In Hotspring Souls! Chapter 4 (which shares its title with the trope name) the Hunter and the Doll experience this thanks to their roommates Artorias and Ciaran's loud, ungodly moaning preventing the couple from getting it on themselves.
- In Shatterheart, Kurogane and Syaoran share a tender moment when they decide to rekindle their relationship and kiss. Then Fai walks in on them without understanding the context.
- Invoked by Syaoran when a nosy healer interrupts his reunion with Kurogane. He decides to mess with both of them by undressing and giving Kurogane a passionate embrace to make the healer think she interrupted much worse.
- In this (NSFW) The Most Popular Girls in School fanfiction, Deandra walks in on Mackenzie and Brittnay getting it on in a stall in the Girl's Room.
- In Thousand Shinji, it happens to Shinji and Asuka several times. They're making out, Misato arrives all of sudden, and they have to stop and pretend that they weren't doing anything... The first time happened in chapter 8, shortly after their Relationship Upgrade.
- In chapter 19 of Children of an Elder God, Asuka and Shinji are about to have sex when an enemy attacks their Home Base. Shortly after they were making out in the locker rooms when Shinji's friend Touji suddenly entered, saw what they were doing and gagged.
- In the "Raise" chapter of The Second Try, Shinji and Asuka are about to make love at night when their daughter Aki opens their bedroom’s door. They stop instantly.
- In Cemetery Man, Francesco Dellamorte and his mystery woman make it on top of her husband's grave, at her request ("He would have liked to know.") Unfortunately, in this particular cemetery the dead are prone to rise seven days after burial - her husband digs his way out, catches them mid-act and promptly takes a bite out of his wife's arm, whereupon Francesco impales him with a cross.
- The James Bond film Diamonds Are Forever has a scene where Bond (Sean Connery) takes Ms. Fanservice Plenty O'Toole back to his room where he gives the obligatory strip down so they can have sex but when she goes into the bed room to dispense with what little remains of her attire (high heels, flimsy see through pink panties and a fancy necklace) while Bond tosses her low cut purple satin dress on a chair and turns on a light... only to find himself being held at gunpoint by a bunch of mooks. The mooks then proceed to toss the basically naked Plenty out a window while she screams in humorous sexually humiliated protest, only to land in a pool, downgraded from Shameless Fanservice Girl to Reluctant Fanservice Girl.
- In Hot Tub Time Machine, Adam, Nick and Jacob walk in on Lou having sex with Adam's sister, meaning Jacob witnesses his own conception... sort of. When he tries to attack Lou, he disappears. Coitus Uninterruptus has to ensue to ensure Jacob lives.
- Running Joke in Going the Distance too — from Dan DJ'ing Erin and Garrett's first hook-up, to her sister walking in on them having sex on her dinner table... and her husband eating a midnight snack to them walking in on her sister and her husband dry-humping.
- In the Japanese movie The Eel, the protagonist finds his wife having intercourse with another man and kills him right then. He spends eight years in prison; his life right after release is the actual story.
- Happens in the British film Sir Henry At Rawlinson End when in a flashback Seth Onetooth finds his wife Rosie carrying on with Henry's brother Humbert in the bushes. This leads to Humbert "accidentally" getting shot by Henry, and explains why his ghost cannot rest until it has found trousers.
- Carry On Loving has the arranged pair Terry and Jenny, who fail at least 10 times to follow through because roommates keep pasting them from their bedrooms.
- In The Secret of My Success, Brantley (Michael J. Fox) ends up having an affair with his boss's wife who turns out to be his aunt!, Vera. When she comes to his office, looking for seconds (which is one-sided this time), they get busted when his uncle shows up unexpectedly, to talk to him.
- In Schindler's List, Schindler is having sex with his mistress, when he's informed that his accountant, Stern, has been mistakenly put on the train that takes Jews to the death camps. Schindler manages to save him just in time.
- In Make the Yuletide Gay, Gunn and Nathan are in Gunn's room stripping down to have some fun time, when Gunn's mom comes in to make sure the boys have enough sheets for their beds.
- In Apollo 13, Jack Swigert was in the shower with his girlfriend when he gets the call to tell him he'll be part of the flight crew; she's very upset, but he simply cannot let it ring.
- Friends with Benefits has Jamie's mom walking in on Dylan and Jamie in the middle of the act. They are more freaked out than she is.
- Spaceballs; Dot Matrix's Virgin Alarm. "It's programmed to go off before you do!" (Unfortunately, it seems the alarm can't tell the difference between sex and romance; Dot assumes the worst calls Lone Star a "sex fiend", even though he and Vespa were just kissing.)
- In D.E.B.S., Amy and Lucy's relationship is exposed when the other members of D.E.B.S. burst in on them in bed together.
- The end of Die Hard with a Vengeance involves the hero, John McClane, interrupting Simon, the villain, as he's about to get intimate with his wife. The normally stoic woman suddenly gets very angry at McClane.
- Star Trek Into Darkness. Don't think Kirk can top Uhura interrupting his session with an Orion woman in her dorm room in the first movie? Kirk sees your sexual shenanigans and raises you two Caitians who are annoyed Starfleet is paging him.
- Near the start of Brian de Palma's Body Double the unemployed actor hero goes home to find his girlfriend's clothes strewn around the apartment and thinks that she's planning something special for him. When he gets to the bedroom he finds out she got started without him and with someone else.
- Friday the 13th (1980): Barry and Claudette have engaged in foreplay and Claudette's shirt is totally unbuttoned when Pamela Voorhees sneaks in on them. She kills Barry onscreen with a knife to the stomach and offscreen, Claudette in the neck.
- Lolita (1997). Humbert is kissing his underage stepdaughter when a police car roars up on them, much to his alarm. Fortunately the cop is more interested in asking if they've seen another vehicle he's pursuing, and fails to realise what's going on.
- In Bound (1996), Violet and Corky are pleasuring each other on the couch when Caesar bursts in.
- In Pretty Cool Too, Walter is about to go outside to have sex with his brother's girlfriend, when his parents come home.
- In Running Scared (1986), Danny does this to Ray and his new girlfriend Maryann twice; once just for laughs, but the other when Danny's ex-wife is kidnapped.
- At the start of Billion Dollar Brain Harry Palmer has left British Intelligence and is working as a private eye. Some photos on his desk show a couple caught in bed in a hotel room — the last shot is of a large fist flying at the camera.
- An Invoked Trope in The Two Jakes, where Private Detective Jake Gittes arranges for the husband to interrupt events as evidence for his divorce case. Only there's an Oh, Crap! moment when the husband goes Off the Rails and shoots dead the man sleeping with his wife. The rest of the movie involves Jake finding out whether this was an act of passion or a premeditated murder.
- Backdraft. Brian McCaffery is having sex with his girlfriend on top of a firetruck when the alarm goes off. They quickly put on their clothes, only to find themselves racing through the streets on top of the vehicle, its sirens blaring. After their initial shock, they both find this rather amusing.
- A running gag in Taxi. Whenever Daniel and Lilly want to get down and dirty, something comes in between.
- Håkan and Carina get caught by their children in When Darkness Falls.
- In Faust, Mephisto is a demon, so it makes sense that he is also a Jerkass Genie. He spoils Faust's desire to have sex with Gretchen in a particularly unpleasant way, by arranging for Gretchen's mother to walk in. Gretchen's mother has a heart attack and drops dead.
- Subverted in Above Suspicion during this scene when Nick and Gail are making love and his beeper goes off.NSFW
- Happens in The Student Nurses when Phred finds out that she's in bed with the wrong doctor.NSFW
- Captain Armand Pahner walks in on two of his sergeants (Eva and Julian) in the Prince Roger series. Additionally, Julian deliberately arranges for this to happen to Roger and Despreaux on multiple occasions. By monitoring the biometrics in her combat suit (specifically pulse and blood pressure) he can tell when they are arguing and when they... aren't.
- A Song of Ice and Fire:
Bracken: I fear I did not hear your coming, my lord.
- A large portion of the drama is sparked by Bran seeing Cersei and Jamie Lannister having sex. Not only is this an act of Twincest, it's also an act of treason as Cersei is the Queen (thus throwing the parentage of the royal children into doubt). Bran is shoved out the window by Jaime in an effort to ensure his silence.
- The trope is Played for Laughs several novels later when Jaime barges into Lord Bracken's tent unannounced, to find him screwing a Camp Follower.
Jaime: And I fear I've interrupted yours.
- In Chrono Hustle #5, Jack and Sesla are in the middle of sex when TRD agents teleport in to arrest him. Sesla is annoyed that they couldn't have waited a few more minutes.
- This happens to Felix in The Two Crowns of Ras Karim, one of Gotrek & Felix short stories. As usual, Gotrek is to blame.
- The Dresden Files: Near the end of White Night, Harry pays a visit to Marcone and finds Helen Beckitt on his lap, their clothing disheveled.
I cursed my timing. If I'd come ten minutes later, I'd have opened the door in medias res. It would have been infinitely more awkward.
- In Wolf Hall, Thomas Cromwell calls for Helen Barre, a woman of his household, to go with him quickly and secretly to help Archbishop Cranmer's secret and pregnant wife. She appears tucking her hair under her cap and Rafe Sadler, whose hair is also rather disheveled, angrily protests her being abruptly dragged off. Cromwell is so preoccupied he completely misses the significance of this until six months later when Rafe confesses that they're married and Helen is pregnant, and he finally puts two and two together.
Live Action TV
- In Smallville, Clark has the unfortunate habit of crashing in at the wrong time, although the scenes are usually relatively innocent.
Lois: (entering Chloe and Jimmy's apartment) You know what Lois likes to see when she comes home? Pants. Pants on everyone.
- Abby has to hide under Brody's bed when her drunk brother Richie turns up for a midnight visit in Against The Wall.
- Lip Service, in the fourth episode when the interruptor turns out to be the husband of one of the women who is hoping to watch the two of them have sex.
- Running gag in Six Feet Under. Nate and Brenda get interrupted twice, first by Brenda's brother, then Nate's mom.
- Game of Thrones:
- The last scene of episode one, when Bran catches Cersei and Jaime at their twincest. With horrific and long-reaching consequences.
- Played for Laughs when Jamie Lannister walks in on his brother at a brothel in Winterfell and tells him to hurry up, then proceeds to send in more prostitutes in order to hurry him up. This provides the trope quote: "Should I explain to you the meaning of a closed door in a whorehouse, brother?"
- This almost becomes a Running Gag in season 4 when different people keep interrupting Prince Oberyn Martell to discuss politics when he's trying to set up an orgy in a brothel.
- "The Laws of Gods and Men" opens with Yara Greyjoy's raid on the Dreadfort interrupting Ramsay Snow and Myranda.
- Played for Laughs in a The Big Bang Theory episode. Leonard was sleeping with a girl named Joyce Kim and was having sex with her when Sheldon decided to interrupt by knocking on the door. Leonard was thinking of ignoring him, but Sheldon knew he was being ignored. Sheldon then came in to remind Leonard of their Roommate Agreement. Due to its terms, Joyce decided to leave. This was actually a good thing for Leonard as she was a North Korean agent trying to get information about a project he was working for. He even admits Sheldon probably saved him from going to federal prison. Again, Played for Laughs, but still.
- Friends: When Chandler and Monica first get together in London, Joey walks in on them. Monica hides under the sheets leaving Chandler to be forced to pretend to have A Date with Rosie Palms to throw Joey off. This trope then happens to the couple on several occasions over the next few months while they're trying to keep their relationship secret. Even after their relationship is official, they can still sometimes be victims of this trope. After they're married and decide to try having children, they get down to business in a hospital janitorial closet and are interrupted in the middle of the act by Monica's father walking in on them, traumatising all three of them.
- An episode of Veronica Mars has an (adult) hacker's relationship with a student (minor) at the school being exposed by Veronica and her camera. She even says "It's satisfying to be the interruptus in somebody else's coitus."
- Combat Hospital has Graham interrupting Simon and Rebecca at the undressing-and-foreplay stage with some pretty serious news for Simon. Rebecca hides, then slips out the back.
- Boy Meets World had a comically extreme example: Cory and Topanga are about to consumate their marriage when the police burst to the hotel suite in and arrest them (because they inadvertently stole someone else's wedding thanks to Eric).
- The Eureka episode "What Goes Around Comes Around" has Jack walk in on two amorous couples. The first time, it's Zoe and Lucas making out on his couch. The second time, it's Fargo going all the way in the middle of a serious electromagnetic disaster...
- Chuck has Chuck and Sarah on the run in order to find Chuck's father, and finally look like they will resolve all that sexual tension after sharing a bed at a motel. Chuck steps into the bathroom to get a condom from his wallet, only to find out that Morgan has taken it and left an IOU note instead. He runs out to buy a new one only to be caught by Casey, who had tracked them down. When they get back to the room, Sarah is no longer there, having figured out something was up.
- Happens a lot to Debra and Ray in Everybody Loves Raymond. It's hard to be private when Ray's parents live over the street and are prone to walking in without knocking. Robert and Amy get it too, from both sets of parents.
- Rookie Blue has Sam and Andy being interrupted by Sam's boss. Since he is undercover and working for a very nasty drug dealer, this is quite serious and is Played for Drama.
- In the pilot episode of 2 Broke Girls, Max breaks up with her boyfriend after she catches him cheating on her this way, clearing the way for Caroline to move in; in the second-season episode "And the New Boss", she walks in on Caroline and Andy.
- South of Nowhere: How Spencer's family learned that Spencer was gay.
- In Torchwood, Gwen walks in on Jack and Ianto right in the middle of a make-out session in the office.
- In the Babylon 5 Grand Finale, Emperor Vir Cotto is interrupted while in bed with two women. This is initially played for laughs, but quickly shifts to drama as he realizes that the visiting Ranger is delivering the news that Sheridan is about to die.
- Modern Family's "Caught in the Act" episode during the second season. All three Dunphy children walk in on their parents.
- Buffy the Vampire Slayer. Happens for a Rule of Threes with Xander walking in on Buffy — in "Intervention" (actually Spike screwing a Buffy Sex Bot), in "Gone" (Spike screwing the real Buffy, only she's been turned invisible so Xander just sees Spike acting very strangely) and "Him" (Buffy making out with Dawn's boyfriend on a school desk due to a Love Spell).
- This is how Ethel gets fired from her job at Downton Abbey. And Jimmy later.
- The season 3 opener of CSI NY opens with Mac and Peyton being interrupted,sort of-They appear to have just finished and she's laying with her head on his chest-a call for Mac.
- Season 9 has a milder form, Mac is just sitting in the park,holding Christine,when the phone rings. Still a type of intimacy,just not actual sex.
- In Spartacus: Blood and Sand, Agron and Nasir are making out in a hallway, where they are supposed to be keeping watch, rather passionately when Mira finds them. She tells them to go to bed.
- In the American version of Shameless this happens a good deal to Fiona, mostly because she can't find much free time in her personal life because of her Promotion to Parent, so when she does have sex it's in awkward, semi-public locations.
- In a flashback in the Firefly episode "Out of Gas", Mal storms into the engine room to give his then-mechanic Bester a piece of his mind and walks in on him having sex with Kaylee. Kaylee sorts her clothes out and fixes the engine in nothing flat (having diagnosed the problem Bester couldn't fix while she was having sex with him). Mal fires Bester and hires Kaylee on the spot, and she runs off to ask her dad for permission with the back of her dress still only half-buttoned.
- Happens in an episode of The Flash (2014), when Barry is about to get it on with his girlfriend. Unfortunately, being a superhero means he keeps getting interrupted by calls about this or that crime taking place. Later happens, when Barry and Iris try to make out just as Joe walks in. Iris tells Barry to talk to Joe about it, since she has no problem with it. As it turns out, while Joe will never be okay with it, he won't make a big deal out of it either. So it's Barry's problem. His solution is to move out of Joe's place.
- Get Smart. Maxwell Smart is doing an Emergency Impersonation of the king of Ruritania, and is busy snogging a beautiful princess when the Chief and the King's aide-de-camp burst into the room.
Max: How dare you interrupt the King during an affair...of State!
- In The Wire, while Herc is serving on Mayor Clarence Royce's detail (trying to get fast-tracked to the rank of sergeant), he inadvertently catches Royce getting a blowjob from his secretary. Herc fears that he'll never make rank and end up like Jimmy McNulty - in an undesirable unit. Carver sets Herc up for a meeting with the politically-savvy Major Valchek, who advises Herc to turn the mishap to his advantage as a way of quickly making rank. Herc then meets with Royce, who, as Valchek predicts, quickly surmises Herc's desire for promotion and demonstrates his willingness to help Herc's career in exchange for his silence.
Carver: What the hell did you say to him?Herc: I said, "Mr. Mayor, that's a good, strong dick you got there, and I see you know how to use it." I didn't say shit!
- Boardwalk Empire
- Atlantic City treasurer James Neary refuses to recant his testimony against Nucky when Jimmy Darmody orders him to do so. Jimmy and Richard Harrow proceed to burst into Neary's office while Neary is boning his secretary doggy-style. They shoo the secretary out, make Neary type a confession at gunpoint that exculpates Nucky, then shoot him in the mouth and stage his death as a suicide.
- Bugsy Siegel tries to assassinate Gyp Rosetti while he is receiving BDSM sex with a waitress. This is a major Oh, Crap! moment as Gyp likes sadomasochism and is tied to the bed. He barely frees himself in time, only surviving by using his lover as a Bulletproof Human Shield. Bugsy then manages to get away, killing Rosetti's bodyguards and the paperboy coming to deliver the evening paper.
- In Supergirl, after Kara gets Mon-el (as Mike Matthews) an internship position at CatCo, she later hears him and James's assistant about to get it on in the supply closet. Specifically, the conversation involves the girl asking him if he has protection, and him wondering if she means his sword, which he doesn't have with him. Kara bursts in moments before Boldly Coming ensues. She tells Mon-el he can't do stuff like that, only for him to point out that it happens all the time on a medical TV show he saw, so it must be okay.
- Happens in the Warrant song "Cherry Pie":
Swingin' so hardWe forgot to lock the door!In walks her daddyStandin' six foot four!He said "you ain't gonna swingWith my daughter no more"!
- Tone Loc's "Wild Thing" has the same thing happen (in this case the girl's mother interrupts them), but with more benign results:
I didn't know what to say; I was hanging by a stringShe said "Hey, you two, I was once like you and I like(d?) to do the Wild Thing."
- In the BBC production of Henry IV Part 1, Hal and Doll deliberately create one of these moments. They pretend to be getting hot and heavy so that when the sheriff walks in on them, Hal has a reasonable excuse for wanting to get rid of him as quickly as possible. They don't want him to search the house and arrest Falstaff.
- G-rated example in Pokémon Gold and Silver. When you first enter Misty's gym, nobody is there, requiring you to find her and interrupt her date. Her boyfriend runs away when you approach, and you can then challenge the gym.
- Subverted in School Days. Kotonoha comes to Makoto's house while Makoto and Sekai are having sex and walks in on them. At first it seems like she caught them in the act, but then it's revealed that Makoto invited her there for a threesome.
- As said above, a similar scene on a different route plays the trope straight, and leads directly to a bad ending.
- Played for Laughs in Katawa Shoujo. In Emi's route, at one point Rin walks in on her and Hisao right after the end of their first sex scene, requesting to use Emi's window to look at a specific cloud. She doesn't appear to notice that Hisao and Emi are both half-dressed (Hisao is topless, and Emi is down to her panties), and leaves when Emi politely asks her for some alone time.
- In Ménage à 3, this is a Running Gag. Nearly every time Matt has sex, no matter with whom, someone walks in and interrupts him.
- In Misfile Ash and Emily end up walking in on Kate and Harry having sex. Oddly enough Kate is only mildly embarrassed and glad that it was at least someone she knew. Ash on the other hand looks like she could use a jug of brain bleach.
- The page picture is from Gunnerkrigg Court, where Kat and Annie walk in on Kat's parents just at the right time to avoid a Primal Scene (note Donald's Rushed Inverted Reading). They resume intimacy when the kids leave.
- Sandra and Woo sees foxes Shadow and Echo interrupted by a wildlife photographer.
- Vampire Cheerleaders: After Stephanie mysteriously goes missing in vol.4, her sister, Katie, and her friends end up travelling across space and time to find her. When they finally do, they find her in bed with a mothman, while surrounded by others waiting their turn. While Steph was mildly amused by the interruption, Katie was not....
- Paradox Space: In "The Inaugural Death of Mister Seven," Crowbar walks in on Clover and Itchy "doing a jig;" which is to say, doing a dance that's part of Leprechaun courtship. Crowbar reacts as one would in the equivalent human situation while the the other two show no shame.
- This Funny or Die video concerns a couple trying to have sex, only for the cat to keep getting in the way.
- On Archer Lana dumps Cyril after walking in on him having sex with Framboise from ODIN.
- The Modifyers: Zigzagged in the unofficial parody. Just as Baron Vain has gotten off from dry humping Lacey, Rat fishes for a compliment for capturing her and bringing her to him. Vain and Lacey (who'd just begun to get into it) become mildly annoyed, before Vain decks him for interrupting them. And with that out of the way, he screws Lacey senseless.
- In this famous scene from G.I. Joe: A Real American Hero, Cobra Commander catches Destro and the Baroness kissing!