->''"There are certain rules that one must abide by in order to [[GenreSavvy successfully survive a horror movie]]! For instance, [[RuleNumberOne Number One]]: You can never have sex. Sex equals death, OK?"''
-->-- '''Randy''', ''Film/{{Scream|1996}}''

%% One quote is sufficient. Please place additional entries on the quotes tab.

Well, the young couple had sex. You know what this means -- [[TemptingFate they are doomed]].

Shows where [[KillEmAll lots of people die]] tend to have a [[TheScourgeOfGod strange conservatism]] about who gets killed. If anyone engages in nonmarital sex, especially unprotected and/or with someone they don't really know, you should probably consider them to have a crosshair on their back, even if the killer is choosing their victims totally at random. [[FanserviceExtra Fanservice Extras]] are particularly vulnerable to this trope.

Very common in slasher movies, such as the ''Franchise/FridayThe13th'' and ''Franchise/ANightmareOnElmStreet'' series. This could be a metaphor for the then-new AIDS scare, or for [=STDs=] in general, although according to one of the makers of ''Franchise/ANightmareOnElmStreet'', it was simply because he thought that people having sex will forget about everything else and be especially vulnerable to serial killers. Which wouldn't be an AssPull if they only died during sex, but when they're prone to it after...

For a literal application, compare OutWithABang, DeathByChildbirth (yeah, [[{{Anvilicious}} we know...]]), CuriosityKilledTheCast, and TheMurderAfter. For the lite version, see KissOfDeath. MateOrDie is the inverse of this trope. Contrast AManIsNotAVirgin and HerHeartWillGoOn, where the man is doomed, but the woman has ContractualImmortality. Also contrast GladToBeAliveSex, which is ''supposed'' to be the opposite (two lovers have sex after surviving something that threatened to kill them; it's ''possible'' to combine that with this Trope, but only by the cruelest of authors.) In some cases, the doomed man will leave SomeoneToRememberHimBy ([[ButICantBePregnant Hur, hur, hur...]]). Don't even get us started if it's [[BringOutYourGayDead with the same gender]]. Compare CartwrightCurse where death can happen even ''before'' the sex merely for being a love interest. Sometimes a consequence of CantGetAwayWithNuthin. Often takes place at a MakeOutPoint.

!!'''As a DeathTrope, several if not all Spoilers will be unmarked ahead. Beware.'''
----
!!Examples:

[[foldercontrol]]

[[folder:Anime & Manga]]
* Genderflipped in ''NaruTaru''. [[ManipulativeBastard Takeo Tsurumaru]] impregnates several girls in the course of the story. In the second-to-last episode of the manga, he has sex with main girl [[ActionGirl Shiina Tamai]] after she tells him that she loves him. Soon... ''he'' dies. Shiina, along with her ShadowArchetype Mamiko, makes it to the end.
* ''{{X1999}}''. Sorata and Arashi. Inverted because ''he'' dies - first in the movie (though she follows him later), later in the TV series. He's still alive in the manga, but it's a sure thing he'll die sooner or later.
** In a subversion, it's less about the sex than it is that Sorata, even before the story begins, was destined to die for a woman. Sorata didn't know ''who'' he would die for or how; he just jokingly said that, since he absolutely '''has''' to die for the sake of a lady, he'd like to die for a really pretty girl. It was many years later (which is the beginning of the story) when he actually '''met''' Arashi; knowing that YouCantFightFate, he decided to die for her.
* Also genderflipped in ''{{Trigun}}'', with Nicholas D. Wolfwood and Milly Thompson. He dies in the same episode he sleeps with her. She makes it to the end.
* In the ''Lightnovel/FullMetalPanic'' novels, apparently, after all these years, Kurz Weber ''finally'' manages to get it on with Melissa Mao (after years of SlapSlapKiss). He dies during his very next mission. But it's ultimately averted! Guess who's back after being rescued by the Spetsnaz in the penultimate volume of the novel series??
* ''Yuria100Shiki'' actually lampshaded about [[http://img04.nj.us.mangafox.com/store/manga/1108/05-039.0/compressed/yuri5_135.jpg this]]
* Avoided in ''Manga/CryingFreeman''. Yoh has to kill Emu for witnessing his crimes, but [[YouDontWantToDieAVirginDoYou she asks him to have sex with her as her last wish]]... but after that, Yoh not only doesn't kill her, but he actually ''takes her in'' and they become a BattleCouple.
* Strangely inverted in ''[[AnatoliaStory Red River]]'', most of the important characters who die are the ones who never got the chance to have sex.
* ''Manga/WolfGuyWolfenCrest'': Every man who's ever slept with Ryuuko Konuma has died. [[ParentalIncest Like her father]], [[{{Squick}} and that man he sold her to]]. That's not to say she murdered them directly, either. Apparently sleeping with Ryuuko just sucks away your will to live unless you're a callous, violent maniac... [[UnholyMatrimony like her boyfriend]] [[BigBad Haguro]]. Eeeeek.
* ''MacrossFrontier'': Sheryl Nome and Alto Saotome have sex not long before battle and then, one is dead/missing and the other has a terminal illness. In the series they both get better, in the movies, [[DownerEnding this is the end!]], Or is it?
* This is what led to Gilbert's death in ''Manga/KazeToKiNoUta'' while he's in a StarCrossedLovers relationship with Serge, although [[DrugsAreBad other]] [[LookBothWays factors]] helped as well. Serge makes it to the end.
* Iason Mink's and subsequently Riki's deaths in ''LightNovel/AiNoKusabi'' are a direct result of the former's refusal to let the latter be in order to continue having forbidden sex.
* One early client of [[FrankenFran Fran Madaraki]] ends up like this after Fran saves his girlfriend by making her part insect. Apparently the species of insect in question instinctively eats its mate.
* Required ''by law'' in ''Manga/{{Ooku}}: The Inner Chambers'' that the first man to sleep with an unmarried Shogun (Shoguns being female in this timeline) be executed for 'causing harm to the Shogun's person'. So ordered because Iemitsu the Younger's first time was via rape, and she couldn't understand that it's not always like that.
** Yoshimune is horrified to find out this law exists when she becomes Shogun and inadvertently sentenced Yunoshin to death by choosing him to sleep with her, and plans to rescind the law as soon as possible. She employs LoopholeAbuse to spare Yunoshin, by agreeing that ''he'' died. The tradesman Shinkichi that happens to look like him? Well, [[BlatantLies that's just coincidence.]]
** In a roundabout way, this applies to [[spoiler:Emonnosuke]]. Yes, he's had sex plenty of times before, but [[spoiler:when he had sex with Tsunayoshi, it was the first time he had done it for pleasure, not just to attempt to conceive a child. It was also the first time he slept with someone he loved. He dies the next day of what is implied to be an aneurysm. Tsunayoshi lives for a few more years after that.]]
[[/folder]]

[[folder:Comic Books]]
* Played with in WarrenEllis' ''ComicBook/BlackGas''. The main characters avoid being turned into zombies because they go off to have sex in the remote mountain cabin. Too bad they eventually died anyway.
* In the ''XWingSeries'' comics, Ibtisam dies in the same issue that she and Nrin finally officially become a couple. Feylis and Avan, on the other hand, make a no-dying pact, and they both live.
* In the ''{{Elfquest}}'' spinoff ''New Blood'', the villainous rock-shaper Door seems impossible to defeat until the jackwolf-rider Dodia beats his brains out with a club. As Door and Dodia had just recently Recognized one another, Door took it for granted that she wouldn't be able to hurt him; because they'd already had sex and conceived a Recognition-sired child, however, she was no longer biologically compelled to be his mate and could fight back against his evil.
* ''SinCity'' has a few examples:
** Blue Eyes is an assassin who lures men to their deaths via seduction.
** When Marv has sex for the first time, it eventually leads to his death.
** Ava Lord uses a mixture of sex and WoundedGazelleGambit to get men to do her bidding, often leading them to their demises.
* Narrowly averted in the ''ComicBook/BlackestNight'' arc. Writers initially planned to have the current Firestorm, Jason and his girlfriend Gehenna, doing a make-out session prior to Gen's death. This was later changed to a quiet conversation about getting married and having kids. Then they changed their minds and had it re-drawn into the make-out scene, but this was fortunately lost somehow and they ended by putting in the conversation.
* In ''HackSlash'', slashers are, for whatever reason, often attracted to teenagers engaging in "debauched behavior". There's easily a dozen ready examples of teens getting offed as they're about to have sex. Cassie even tried to initiate a make-out session with Skottie Young to lure a slasher to them, {{lampshading}} the trope when he rebuffed her. Obviously, this is all due to the prevalence of the trope in 80s slasher flicks, which the series is largely inspired by in the first place.
[[/folder]]

[[folder:Film]]
* The entire plot of ''Film/BasicInstinct'' (Catherine Tramell lives, however).
* ''Franchise/FridayThe13th'' series:
** [[JustifiedTrope Justification]]: In the first ''Film/FridayThe13th1980'', the killer, Pamela Voorhees, specifically targeted the people who were having or going to have sex, because the two camp counselors who were supposed to be monitoring her son Jason Voorhees when he drowned as a child were too busy getting groiny with each other.
** Although there are later claims that the counselors tried to catch Jason who ran off and fell into the lake ''because'' [[PrimalScene he saw them going at it]].
** A most notorious moment in [[Film/FridayThe13thPart2 the second movie]] is where two teens got killed while ''in the middle'' of getting it on. Jason killed them shiskabob style by skewering them both with a spear.
** A significant lampshade is hung on this trope in [[Film/JasonX the tenth film]] in the series. In a virtual reality simulation meant to distract Jason, a pair of scantily clad teenage girls exclaim (among other things), "We love premarital sex!" He proceeds to kill them with ''[[GrievousHarmWithABody each other]]''.
** Done [[{{Anvilicious}} heavy-handedly]] in [[Film/FridayThe13th2009 the 2009 reboot]]; every character who has sex, or wants to have sex, or fantasizes about having sex, or is a creepy redneck who has sex with mannequins gets killed. There are a few others, of course.
* Subverted in ''Film/CherryFalls'', which had a serial killer that targeted virgins. When the GenreSavvy town teenagers figure this out, they decide to throw an orgy... which the killer, having gone completely AxCrazy (complete with axe) by the end, crashes and massacres.
* In ''Film/TheDayAfterTomorrow'', two workers at the local weather service station are making out passionately on the couch when tornadoes strike Los Angeles. In the chaos that ensues, they die, while the Mexican janitor (who was diligently cleaning the floors while the people who were supposed to be monitoring the weather were making out) survives.
* {{Lampshaded}} in the movie ''Film/{{Scream 1996}}'', where this is the very first of the rules posited by GenreSavvy horror geek Randy Meeks for successfully surviving a horror movie. The other two rules cover drinking and doing drugs, and [[TemptingFate saying that you'll be right back]]. He later gets killed in the sequel, and it's revealed that he spent a night with "Creepy Karen" before getting whacked.
** Not to mention it's hilariously subverted when Sidney bangs the ''damned'' killer and gets to survive the movie!
** Angelina of the third film reveals that she employed the CastingCouch to get the role of Sidney in Stab 3... then she dies seconds later.
** In [[Film/{{Scream 4}} the fourth film]], it's revealed that Jill lost her virginity to Trevor, pushing their position as Sidney and Billy [[{{Expy}} expies]] further. Later, ''Jill'' is revealed as the killer, and she offs Trevor shortly, making this the exact inverse of the Sidney and Billy example, right down to the sex of the killer.
* More or less every BMovie and thus, rightfully parodied in the "Thanksgiving" segment of ''Film/{{Grindhouse}}''.
* ''Franchise/{{Halloween}}'' series:
** Used in the original ''Film/{{Halloween 1978}}'', where three of the five victims had just had sex, and the fourth was on her way to do so. It's heavily implied, however, that Michael Myers has some severe issues with sex, and the selection of victims is not at all coincidental.
** In an interview with AMC, John Carpenter (the Director) states "I have been accused of ending the Sexual Revolution, and for that I sincerely apologize."
** The same happens in [[Film/{{Halloween 2007}} the remake]]: Everyone seen having sex dies horribly. Most of the other victims probably weren't virgins either (this pattern is so glaringly obvious in the movie that it must have been intentional). They even went out of their way to mention Laurie hasn't gotten laid. Although, the trope is surprisingly averted with Annie, who actually survived her attack to appear in [[Film/HalloweenII2009 the second movie]] and THEN die.
* Subverted in two Children of the Corn movies, even though many of the children in the series wish to kill adults because of their loss of innocence.
** In part II, non-married adults John and Angela have passionate sex. Angela is kidnapped and is almost killed, but she survives.
*** In the same film, teenagers Danny and Lacey almost have sex, but are stopped when they find a severed hand. Lacey is kidnapped, but is saved along with Angela.
** In the sixth film, the main heroine, Hannah, has sex with Gabriel, the man who turns out to be the big bad of the series. She survives.
* In the 1970s ''Film/TheDayOfTheJackal'', The Jackal meets an attractive married woman at a hotel, has a torrid affair with her, then later discovers her address and goes to her home. When she asks him about what he's doing, because the police were looking for him, and he's driving a car with local plates, which means she knows he stole it, and if he'll just tell her, she won't say anything, he breaks her neck.
* Xenia Onatopp's love of MurderousThighs in the ''Film/JamesBond'' movie ''Film/GoldenEye'' is more an example of OutWithABang, but it's worth noting that ''several'' Bond Girls and henchwomen die after hooking up or flirting with Bond:
** Jill Masterson (drugged and painted in gold from head to toe, which suffocated her because she can longer can breathe through her skin) in ''Film/{{Goldfinger}}''. Yes, ScienceMarchesOn.
*** Note that Jill's sister Tilly (killed by [[ImprobableWeaponUser Oddjob's deadly hat]]) doesn't count because not only did she not have sex with Bond, she didn't even flirt with him.
** Aki from ''Film/YouOnlyLiveTwice'' (poisoned).
*** The other female, Kissy Suzuki, survives even after "marrying" Bond and, in the novels, carrying his only child, James Suzuki, in ''her'' uterus.
** Teresa "Tracy" Di Vicenzo from ''Film/OnHerMajestysSecretService'' (shot by ''Irma Bunt'' with an M16 rifle; and Blofeld was driving, IIRC).
** Countess Lisl von Schafl from ''Film/ForYourEyesOnly'' (hit by a vehicle).
** The villain Drax' secretary Corrine Dufour in ''Film/{{Moonraker}}''. Bond seduces her and tricks her into showing him where Drax's safe was. As punishment, Drax sets his dogs on her.
** The female [[TheDragon Dragon]] May Day from ''Film/AViewToAKill'' (after her HeelFaceTurn, she pulled a HeroicSacrifice to take Max Zorin down and avenge the deaths of her workmates, [[YouHaveOutlivedYourUsefulness whom he killed when they weren't useful anymore]]).
** Paris Carver from ''Film/TomorrowNeverDies'' (tortured and strangled. Adding insult to injury, her body is planted in Bond's hotel room in an effort to frame him for murder.)
** Elektra King from ''Film/TheWorldIsNotEnough'' (gunned down by Bond himself when [[TheMole her]] [[BitchInSheepsClothing treachery]] is revealed).
** Vesper Lynd (drowned) and Solange Dimitrios (strangled) from ''Film/CasinoRoyale''.
** Strawberry Fields from ''Film/QuantumOfSolace'' (drowned in crude oil).
** Severine in ''Film/{{Skyfall}}'' (YouHaveOutlivedYourUsefulness to Silva).
** Lampshaded in ''Film/GoldenEye'', as the villain makes a comment about Bond's [[CartwrightCurse track record]]:
--->'''Trevelyan:''' ...or if you find forgiveness in the arms of all those willing women for all the dead ones you failed to protect.
** Lampshaded by M in ''Film/QuantumOfSolace''.
--->'''M:''' Look how well your charm works, James. They'll do anything for you, won't they? How many is that now?
** This happens to ''Film/JamesBond'' himself in the FakeOutOpening of ''Film/YouOnlyLiveTwice'', as he's killed by assassins shortly after boinking a Chinese girl.
** Parodied in ''Illuminatus!'', wherein the British agent Fission Chips leaves a trail of dead Eurasian girls wherever he may go.
** Played straight and averted in ''Film/LiveAndLetDie''. Rosie Carver is killed after Bond seduces her. Solitaire, who is supposed to remain a virgin to retain her psychic powers, is also seduced by Bond and was supposed to be sacrificed in a voodoo ritual, but Bond saves her, firing a Smith & Wesson Model 29 .44 Magnum revolver in the process.
** Inverted in ''Film/TheManWithTheGoldenGun''. The assassin Scaramanga has sex right before he ''kills'' someone that he's been hired to kill. (Bond notes that some matadors do the same thing before a bullfight.) [[spoiler:The Trope is played straight, however (maybe even doubly so) because Scaramanga later kills his lover after she double-crosses him and helps Bond.]]
* In ''Film/SnakesOnAPlane'', a couple sneaks into the bathroom to have sex. They are the first to be killed by the snakes. Their [[TheScourgeOfGod drug use]] may have contributed, too.
* Interestingly, the slasher film did not always contain this trope: in the 1974 Canadian film ''Film/BlackChristmas1974'', the heroine is pregnant, though the movie ends with her alone in the house with the killer.
** The first victim is also described as a "professional virgin."
* In ''[[SoBadItsGood Boa vs Python]]'', the python stalks a teenage couple that is having sex, and actually ''licks'' the girl, who, because her eyes are closed, thinks it is her lover. Then the python, which should be a constrictor, ''bites'' them squarely in half.
* Inversion: In ''Film/OnceBitten'', the hero is targeted by the vampire Countess ''because'' he's a virgin. He and his girlfriend end up having quickie sex in a coffin, rendering his blood unsuitable for her needs.
* ''Film/PiranhaPartTwoTheSpawning''[='=]s opening scene had a couple discussing where they failed to have sex because the guy found fault in everything. The hotel room was too dry, the beach too sandy, and the boat too uncomfortable. They then go scuba-diving into a shipwreck and decided to have sex, you know, nothing better than that, right? Well, okay, the killer piranha did kinda ruin the mood.
* In ''Film/{{Taken}}'', as soon as the slutty best friend says she's going to have sex with a random French guy because "Who cares? He's hot!", it was obvious she was a goner.
* In the film ''{{Tormented}}'', a schoolboy who killed himself because of bullying comes back from the dead to take fatal revenge on the bullies. One of them decides to go to the cemetery and dig up the killer's body, but is sidetracked by having sex with his girlfriend while his car is parked there, which turns out to have been a very bad idea because the killer drags him out of the car and castrates him by repeatedly stomping on his genitals, leaving him to bleed to death. ''Ouch.''
* Two of the youngsters that stop by in the Mario Bava movie ''Film/ReazioneACatena'' who are speared while having sex. ''Film/FridayThe13thPart2'' copies this very scene, only putting the guy on top instead of the girl.
* Subverted in ''Film/TheGodfather Part II'', where Senator Geary, who hates Michael Corleone's crime-racket, is made to believe that he accidentally killed a prostitute during "weird sex-games" at Fredo Corleone's brothel; after this, the senator is indebted to Michael for covering up the incident, but is also ''blackmailed'' by him. One shot afterwards heavily suggests that Al Neri was responsible for the actual killing.
* Invoked in ''Film/{{Evolution}}'' where an AssholeVictim actually sings the song quoted at the top while preparing a rendezvous on a golf course... and is promptly eaten. Slight subversion in that the pair hadn't actually gotten around to the deed (and the woman survived).
* PlayedWith in ''Film/PiratesOfTheCaribbeanAtWorldsEnd''.
** {{Exaggerated}} into the family-friendly version of this trope: Death By Marriage. As soon as Will and Elizabeth are hitched, you know one of them is about to die.
** But then {{subverted}}, and arguably ''inverted'', when some LoopholeAbuse causes that character to un-die, and the two are able to consummate in due course. (And not like ''[[ILoveTheDead that]]'', either.) Heck, even the "family-friendly" element is subverted, because we see them putting clothes back on afterwards. (Not to mention [[SomeoneToRememberHimBy the reveal]] in TheStinger...)
* Inverted in ''Film/DeathProof''. The first group of girls, while they act fun, are surprisingly conservative, especially Arlene/Butterfly, who actually seems to have some kind of aversion to sex. They die. Horribly. The second group, on the other hand, are ''very'' open about their sex lives ("He likes to watch me pee"), and Kim at one point in the final chase scene yells "I'm the horniest mother-fucker on the road!" Not only do they live, they kill Stuntman Mike.
* Played so straight it's almost a parody in ''Film/JennifersBody'', where the title character uses the promise of sex to lure boys into places where she can eat them. It's revealed though that the whole "demonic possession" thing gets kicked off only because its perpetrators thought they had gotten their hands on a ''virgin'' sacrifice.
* Sarah Connor's roommate in the first ''[[Film/TheTerminator Terminator]]'' movie.
** And Kyle as well, after he serves his purpose by impregnating Sarah with John and delivering her to the point where she can defend herself from then on (partly because he's already damaged the Terminator so badly himself).
* In the fourth ''FinalDestination'' movie, Hunt has steamy sex by the pool and shortly after dies a very gruesome death by being sucked into a high pressure drain hole. It doesn't help that he was a Hollywood skeptic that was warned about some weird stuff going on... or saying earlier that if [[TemptingFate he was going to die, he was gonna get laid first.]]
* In ''Film/TheToweringInferno'', Dan Bigelow and his secretary/mistress die almost immediately following a tryst in his apartment.
* Although there's no actual sex, the sultan's death in ''Film/TheThiefOfBagdad'' has overtones of this -- he's given a mechanical woman as a gift, who dances seductively in front of him, and when she goes to embrace him, "she" stabs him in the back.
* In the shlock blood-and-boobs horror film ''Film/Piranha3D'', most of the victims are promiscuous spring breakers. A pornographer gets his penis bitten off by a piranha, a woman is sliced in half by a high-tension cable (which first removes her bra, then her entire upper torso), a girl gets her hair entwined in the propeller of a speedboat and has her face ripped off -- might be one of the definitive "death by sex" compilations.
* Averted in ''Film/{{Ghostbusters}}''. It's strongly implied that the final event that allowed Gozer to come to New York (an event that would've caused the apocalypse if the Ghostbusters hadn't killed her shortly afterwards) was Dana having sex with Lewis. It's an aversion because both Dana and Lewis were possessed by, respectively, the Gatekeeper and Keymaster rather than being voluntary participants, and because both of them survive the film.
* In ''Film/StarshipTroopers'', Dizzy Flores dies within 24 hours after finally having sex with Rico. Something she'd been wanting since the beginning of the movie. The sex, not dying.
* In ''Film/AllTheBoysLoveMandyLane'', Marlin gets killed just minutes after giving a blowjob to Jake. The cause of death? [[FreudWasRight Getting a shotgun barrel shoved down her throat.]]
* Inverted in Norwegian slasher ''Film/ColdPrey'' / ''Fritt Vilt''. The virgin who just refused to have sex with her boyfriend is the first one to die.
* In ''Film/CabinFever'', a flesh eating disease scares off most of the teenagers spending their break in a cabin in the woods. When only two are left behind, the requisite horror-flick babe figures that, seeing as they're [[OutWithABang doomed to die anyway, she and the hero might as well go out with a bang]]. Only ''after'' the horny hottie gets his pork in her pouch does the guy question why they aren't using a condom. Of course, the woman tells him [[TemptingFate not to worry because "She's healthy."]] Oh good! Seeing as how all their friends had come down with this deadly illness, I was afraid she might be sick, too. No need to worry about that sinister soundtrack playing as she grinds you into the mattress, pal... Or those sickly red rashes that just appeared where you grabbed her back while you blew your load. But, just to be on the safe side, you should probably rinse off the salami with some Listerine when you're done.
* The entire plot point of the film, ''Body of Evidence'', starring William Defoe and {{Madonna}}.
* Plotpoint of ''Film/TheCabinInTheWoods''. The trope is being [[PlayingWithATrope Invoked, lampshaded, discussed, and justified]], not all in that order.
* Played for laughs in ''Wacko'' at the Halloween Prom when the Lawnmower Killer shoves Tony Shlongini's head into the garbage disposal in the school cafeteria; the cafeteria matron then interrupts the murder to teach him how to use a garbage disposal properly. The Lawnmower Killer then runs Tony's date, Rosie, who's wearing only a whipped cream bikini, through the cafeteria's conveyor-belt dishwasher.
* ''Film/InHarmsWay'': Everyone connected to [[spoiler:Eddington]] via sex by two steps of separation or less ends up dead by the end of the film.
* In ''Film/FathersDay'' the very act of fathering a child (that is, impregnating a woman) makes you a target for the Father's Day killer.
[[/folder]]

[[folder:Literature]]
* ''Literature/ExHeroes'' has Cairex the Demon-Human Hybrid die in the backstory due to getting a blow job from zombie Jessica Alba. No one is sure how to react to this story when they hear it.
* "Sex equals death" is the main theme in KurtVonnegut's short story "Welcome to the Monkey House," in which a dystopian society prevents people from having (or enjoying, if they do try to have it) sex. The "villain" responds by basically raping women to force them out of their belief that sex is wrong. It works.
* In Arthur Machen's ''Literature/TheGreatGodPan'', a sinister woman drives prominent men to madness and suicide. The unspeakable horror they experienced is strongly implied to be sexual in nature, although Victorian propriety prevented Machen from elaborating.
* In Creator/StephenKing's short story "The Raft", four college students swim out to a raft in the middle of a remote lake. A mysterious oil slick-like creature appears, and devours two of them; the first one touches it, the second steps on a crack on the raft and gets grabbed by his foot. Hours later, the remaining two (a guy and his girlfriend) end up having sex; the girl's hair falls off through the cracks of the raft and the creature absorbs her.
* In the second ''Literature/NightWatch'' book, Alisa and Igor have sex, then discover who (and what) each other is. Light magician Igor then kills Alisa for being a dark witch, then goes into a depression and ultimately lets himself die in remorse.
* If it's not clear enough in ''[[Literature/{{Indigo}} Troika]]'' that Veness is doomed when Indigo sleeps with him, it becomes ''painfully'' obvious when she admits to [[LoveHurts reciprocating his love for her]].
* In ''Film/{{Jaws}}'', the book actually kills off the character Matthew Hooper during the cage scene. Earlier in the book: he was having an affair with Brody's wife, Ellen. She avoids the trope by never being in the water. The first victim in the book was taking a postcoital swim.
* Lampshaded in ''Literature/TheDresdenFiles'' novel ''Literature/ProvenGuilty'' via Dresden's description of some of the monsters in the films shown at Splattercon!!!. One of them is supposed to be a monster that hunts the wicked, which apparently includes anyone drinking or having sex.
* In ''[[Literature/VampireAcademy Shadow Kiss]]'', Rose and Dimitri finally give in to their passion for each other... And right after the school is attacked by Strigoi and Dimitri is "taken." Right when they whipped it out, you knew something bad was going to happen to ''one'' of them, at least, since a huge plot point of their relationship is that it's forbidden.
* While it is not a quick connection of "sex then death", Thomas Hardy's ''Literature/TessOfTheDUrbervilles'' is certainly ''doomed'' by sex. The titular character is either raped or seduced (it's slightly ambiguous, but most assume rape) early in the book by a distant relative. This completely destroys her life and sends her on an ever-increasing spiral of despair for the rest of the book, repeatedly rejected because of being DefiledForever, until at last she murders the man who deflowered her and is hanged for it.
** Also, while one may argue whether it happened or not, it's implied Tess and her husband Angel, who once abandoned her just because she was not a virgin then came back and tried to rescue her from execution, consummate their marriage in their hideout. And their hideout scenes are supposed to be those moments of (false) hope.
* Because of a massive subversion of STDImmunity in the world of ''Literature/ABrothersPrice'', sex with non-virgins is not well thought of. Men are rare enough that those who are not made into husbands are [[SexSlave crib captives]], made to service women for ten crowns a night in the hopes of [[SonOfAWhore impregnating them]]. Various different cribs have different reputations, some thought to be clean, others not; to someone of noble status, visiting even a 'clean' one is social suicide. There are stories about a married woman "getting an itch to try a crib", catching something other than a child there, and spreading it to her husband, who spread it to his other wives and any children they conceived, to the point where the entire family was killed.
* ''Series/NeverWipeTearsWithoutGloves'': In the eighties gay men were considered to have brought AIDS on themselves because of their sexual behaviors. The book focuses on this quite a lot and author Jonas Gardell makes a lot of references to actual articles written in Sweden at the time and actual things politicians, religious leaders and other public figures were saying and suggesting. Especially heartbreaking when the book quotes actual newspaper headlines that mention the tragedy when an ''innocent'' (i.e., a heterosexual who got AIDS through blood transfusion or heterosexual sex) dies of AIDS.
* Creator/GregEgan's ''Literature/{{Orthogonal}}'' trilogy plays this ''universally'' and chillingly straight: For the protagonist race, sex triggers immediate reproduction, which consists of the mother fissioning into four children. So it's a necessary part of biology... and also murder.
[[/folder]]

[[folder:Live-Action TV]]
* HBO's ''Series/GameOfThrones'' certainly depicts a world in which many beloved characters die. As a lead-in to the Red Wedding, you know the young couple Robb Stark and his newlywed Talisa are screwed when they are shown together happily... screwing. As a bonus, their deaths are foreshadowed the moment they decide to name the unborn child after Robb's late Father, Eddard Stark.
* VH1 did a special regarding horror movies (I believe as a tie in to ''Scream 3.'') Throughout the show, they listed "Horror Movie Rules." One of the top rules was simply, "Virgins live, sluts die."
* This enduring trope may have had its first instance on TV with the ''AlfredHitchcockPresents'' episode aptly entitled "Coming, Mama" (episode #217, originally aired 4/11/61).
* Let's not even get started on ''LawAndOrderSVU''
* Subverted on an episode of ''Series/SpecialUnit2'', in which the MonsterOfTheWeek only targeted virgins.
** Although those girls all recovered in the end, as opposed to many victims of the week.
* MiniSeries and book example: in ''PorterhouseBlue'' a middle-aged bedder, who senses a college's only research graduate student's secret obsession for her, sneaks in his room in the middle of the night and [[DoubleStandardRapeFemaleOnMale rapes him]]. However, moments into the act they both explode because, while sneaking in, she lit the gas without knowing the chimney was blocked. (For reasons too complicated to explain, the blockage consists of ''gas-filled condoms'', I kid you not, so the explosion is pretty spectacular.)
* This happens almost every episode in ''Series/{{CSI}}''. If two characters are shown having sex, and it's enjoyable and unwed and not in the missionary position, one or both of them are doomed. This has more to do, however, with the fact that ''any'' character outside the main cast whose personal life the show delves into is doomed, regardless of what they're doing.
** Done entirely straight with two of the regulars on ''{{CSI NY}}''. That's not Danny and Lindsay, yet. It was Flack and Angell.
* Also common in ''Series/{{House}}'', where sex and sexually transmitted diseases are routinely the cause of a number of horrific medical cases, up to and including heart failure, car crashes, paralysis, life-threatening pre-teen pregnancies, and even African Sleeping Sickness.
** "Sex Kills" is the title of one of the episodes.
** {{Subverted|Trope}} in one episode, where we're led to believe that a woman's sexual promiscuity may have led to her illness, but it turns out that the cause is something completely unrelated that she couldn't possibly have foreseen.
** Subverted in another episode where Cameron assumes the (male) porn star they're treating is sick because of his profession, but it turned out to be caused by his over-sanitary childhood instead.
* The first two times ''Series/{{Lost}}'' depicted couples having sex on the island, the female of the couple (Shannon, Ana-Lucia) was shot and killed later in the same episode; the latter was the one who killed the former (accidentally).
** Also Libby, whom it's strongly implied was about to do the deed, if she hadn't already.
** Also, sleeping with [[CartwrightCurse Sayid]] is practically a non-stop ticket to the afterlife. In fact, this is what kills Shannon. He later marries Nadia, and actually ends up shooting Elsa himself.
* A running joke on the ''TelevisionWithoutPity'' recaps for ''Series/{{Supernatural}}'' is that every woman that has sex with Sam must, by rule, die. Began with the Pilot, confirmed with "Heart" in which Sam is forced to kill the first woman he has brought himself to sleep with since his girlfriend's flaming death and in recent episodes seemingly subverted until we find out that it is actually a demon in a dead body, so she was already dead!
** Ruby should still be added to Sam's sex hit list, now that she's been skewered with her own knife. That leaves Sam's track record at 3 out of 4!
** Subverted later in the season. The next woman Sam has sex with experiences no karmic retribution whatsoever we are led to believe that she is the demon they're after, until it is discovered the real demon is the guy Dean is cosying up with.
** Also [[TearJerker heartbreakingly]] inverted in the middle of season 5, when Jo refuses to sleep with Dean on their 'last night on Earth', saying she'd prefer to keep her self-respect... and dies later in the episode anyway.
* Disaster occurs after the first time [[{{Buffyverse}} Angel and Buffy]] sleep together. Enter Angelus, who then kills Jenny Calender and tries to destroy the world.
** Xander attracts quite a number of demon girls who want to have sex with him ''and'' kill him. At once for the first case, the substitute teacher who turns out to be a female mantis.
** The prevalence of this trope is lampshaded in ''Series/{{Angel}}'' after Cordelia's first brush with a FetusTerrible.
--->'''Cordelia:''' [[AnAesop I learned something, too]]. I learned, uhm... men are evil? Oh, wait, I knew that. I learned that LA is full of self-serving phonies. No, had that one down, too. Uh... sex is bad?
--->'''Angel:''' We ''all'' knew that.
* In the first season of ''[[Series/TwentyFour 24]]'', Kim Bauer sneaks out with her friend Janet York to meet up with a couple of college guys. Janet has sex with one of the guys while Kim just makes out with the other one. When it turns out the college guys are set to kidnap the girls, it's the start of a pretty bad day for Kim, but Janet? She gets her arm broken, doped up on heroin, run over by a car, and is finally suffocated to death.
** In Season 8, Renee Walker is killed by a sniper after having sex with Jack.
* Invoked in a HalloweenEpisode of ''BoyMeetsWorld'' where the kids are being stalked by a killer out of the ''Franchise/{{Scream}}'' movies. The GenreSavvy in the group recognize that people who have had sex are going to be killed off.
-->'''Eric:''' I'm dead!
-->'''Jack:''' I'm dead.
-->'''Shawn:''' I'm as sick as you can get without actually dying.
* The premise of the comedy series ''Laid''. A woman discovers that all the men she's ever had sex with are dying. In the order she slept with them. All in really random ways, like getting hit by a car or getting an aneurysm or getting hit in the head with an indoor cricket ball.
* On ''Series/{{Heroes}}'', Elle and Sylar entertain a brief sociopath/psychopath romance and immediately have sex when they realize that the second eclipse was blocking their powers. Once they regained their powers however, he murders her after they fail to murder Bennet and he realizes that their relationship had no possibility of being sustainable.
* Alana De La Garza, who plays Marisol Delko Caine on ''CSIMiami'', has said that she knew her character was going to die when she heard that Marisol and Horatio were getting married.
* Take UpToEleven with ''Series/TwoPintsOfLagerAndAPacketOfCrisps'' in the episode ''When Janet killed Jonny'' when Gaz is killed by Donna's severed legs. And he's doesn't mind it.
* This happens in seasons 7/8 of ''Series/TheXFiles'' A few episodes after Mulder and Scully start their sexual relationship, Mulder is abducted and returned dead.
* Lampshaded in ''That70sShow'' when the gang goes to see ''Film/TheTexasChainSawMassacre1974'' in one episode. After one girl is killed following the events of the trope, Hyde comments that she had to die "as all movie sluts must do."
* In the ''Series/MastersOfHorror'' episode "Pick Me Up", a rocker and his girlfriend unknowingly pick up the serial killer Walker from the road. The girlfriend flashes her panties to Walker, pissing off the boyfriend. Walker kills them both, but the girl specifically for being skanky (and he tortures her to death whereas the boyfriend got a quick one); he actually abhors sex.
* In ''Series/Torchwood'', on the second episode (''Day One'') there's a sex gas alien that inhabits a young woman's body and has sex with men to remain alive via orgasmic energy, but this in turn kills the man, thus her victims literally died by sex.
* It is invoked in the final episode of the first series of ''Series/YGwyll'' by Dyfan. He justifies the murder of Gwen, with whom DCI Mathias starts an affair, by claiming that they were profaning the resting place of Gwen's adoptive daughter/Dyfan's biological daughter (they only kissed in the bogs).
[[/folder]]

[[folder:Music]]
* "White Pearl, Black Oceans," a song by power metal group SonataArctica. A reclusive lighthouse keeper heads into town one night, meets a woman, and later sleeps with her. On his way home, her husband beats him so badly that he's unable to make it back to in time to light his lamp. [[CantGetAwayWithNuthin Naturally]], a ship crashes that very night, everyone on board dies, and the lighthouse keeper is so ridden with guilt that he [[DrivenToSuicide throws himself from his tower]].
* Briefly treated for laughs in the video for "Sweet N Sour" by the Jon Spencer Blues Explosion. A couple are making out in a bathroom and then a monster comes out of the toilet are decapitates them.
* The video for "[[LadyGaga Bad Romance]]" uses this.
* The Bonzo Dog Doo Dah Band's "Death Cab for Cutie". Girl cheats on her boyfriend, takes a cab home, driver jumps a red light, splat. (Bit unfair on the driver, though, unless he was the one she was cheating with.)
* The video for Cephalic Carnage's "Ohrwurm" is a rather gruesome and graphic rendition of this trope.
[[/folder]]

[[folder:Mythology]]
* The ''wrong kind of sex'' in a lot of mythology and classic {{literature}} (premarital, adultery, incest, impulsive, etc. depending on the age) could lead to various unpleasant fates, from infertility to being turned into trees. See also GoodPeopleHaveGoodSex.
** For instance, in ''Theatre/OedipusRex'', Oedipus accidentally marries and has sex with his mother Iocaste. And just to show that sexism is timeless, guess which one of the two of them dies, and which one goes on to become a cult hero in ''Theatre/OedipusAtColonus''?
*** To be fair, Iocaste commits suicide, specifically ''because'' of her learning that Oedipus is her son. Oedipus apparently thinks it sufficient to tear his own eyes out of his eye sockets.
**** In classic Greek theater, the hero of a tragedy was never allowed to die, but suffer greatly and live with the pain in order to grow as a person from it so this was more a convention of the theater style of the time rather than a literary choice.
*** And according to {{Aeschylus}}' ''Seven against Thebes'' and {{Euripides}}' ''Phoenician Women'', his sons Etheocles and Polyneices thought of him as a curse and a pariah to the point of forcing him to step down as king, locking him away and later kicking him out of Thebes along with his daughter (and their sister) Antigone.
*** His father Laius abducted and raped Chrysippus (who he was the tutor of) and the gods placed a curse on his family, saying that Laius' son would kill his father and marry his mother.
* Most DeathBySex tropes originate about from the fact that Scripture prescribes capital punishment for many forms of sex: Adultery, homosexuality, bestiality. Many experts now believe that this was the Jewish way of increasing their population-numbers through increased births, in comparison to other nations that allowed and encouraged other kinds of sex. When Christianity also adopted these laws among other cultures, the moral became woven into stories ever since, as AnAesop theme that "God Is Watching" and that He punishes those who choose to violate his law; this is also symbolic for the idea that such types of sex are essentially "killing" the persons in an extended sense (i.e their descendants, society, etc).
** Not all violations were punishable by death, however. If neither of the lovers was married (or betrothed), the Bible commands [[ShotgunWedding the couple to be married immediately, unless the woman's father refused]]. Note, this order to get married (and pay the dowry associated with the marriage) stands whether or not a child was conceived. Oh, and a man who married his wife this way can never divorce her.
*** Though this also held for ''rape''. It just about makes sense within the [[ValuesDissonance view at the time]] of women as property - you break it, you bought it, essentially. However, from the wife's point of view, when compared to spending the rest of your life inescapably married to your rapist, [[FateWorseThanDeath death by sex might be preferable]]. It should be borne in mind that the victim was never required to live with her rapist or ever sleep with him again.
**** The reason for this being that in Bible times non-widowed non-virgins had virtually no chance of being married after being deflowered, (unless already betrothed) so marrying her rapist/lover was the only way she could get married and have some status in society. Getting married was woman's only option in those days unless she wanted to be an outcast.
** Not all scholars agree that homosexuality was outlawed, in fact it was more likely just talking about ritual prostitution.
*** Or anal sex, hence the specified "like a woman" in the passages. Other forms of homosexual acts would have been ok though.
* {{Discussed|Trope}} and averted in ''Literature/TheEpicOfGilgamesh'', where the titular character refused Ishtar, a goddess, seducing[[note]]can't remember the original context...[[/note]] him, in a very interesting case of [[GenreSavvy genre-savviness]] (remember, this is THE oldest preserved written story EVER, it is the [[UrExample example from not far away from Ur]]), by naming the mythological figures who met horrible demise accepting such offer. It's debatable whether he knew [[WomanScorned what his refusal would mean]] or not.
[[/folder]]

[[folder:Tabletop Games]]
* ''TabletopGame/{{Pathfinder}}'', since it stylises itself as "the DarkerAndEdgier TabletopGame/DungeonsAndDragons", invokes this with a number of its monstrous races, especially the AlwaysFemale ones that thusly need humanoid men to procreate.
** [[HarpingOnAboutHarpies Harpies]] traditionally eat their mates after sex, and in fact consider it shameful not to do so, especially if they become pregnant as a result.
*** In a reversal, though, [[EnthrallingSiren Sirens]] are well-known for literally dying of grief and heartbreak (or just committing grief-fuelled suicide) if their mates run away or are taken from them.
** Hags may or may not eat their lovers; it depends on whether they feel hungry or think it would be more "fun" not to.
** Jorogumos mate with humanoid men to become pregnant, then use their poison to paralyse their lover before implanting the fertilized eggs inside of him; the jorogumo painstakingly keeps him alive and well until the egg hatches, whereupon the baby jorogumos eat their father as their first meal.
** Lamias tend to eat their lovers after they grow bored with them, assuming they don't [[OutWithABang kill them in the course of sating their lust]].
** Thriae Queens need humanoid males to fertilize their eggs and produce more thriae for the hive. When their consort grows too old to be able to have sex, the custom is for the Queen to painlessly poison them, putting them into a deep, anesthetized slumber, and then eat them, after which she will seek out a new consort.
[[/folder]]

[[folder:Theatre]]
* In the Broadway musical ''IntoTheWoods'', the heroes split up to search for Jack to protect him from a marauding Giant. While she's searching, the Baker's Wife meets up with the Prince and has sex with him; she's crushed by the Giant ''immediately'' afterward.
** Well, after she has a soliloquy/musical number that sums her mindset up as "my affair has made me more grateful for what I have but hey it was kind of nice." She's more killed by barely-repentant adultery than killed by sex, since she's a married lady with a child.
** Meanwhile, by contrast, the entirely '''un'''repentant and equally married Prince is punished by ''hooking up with'' ''Literature/SleepingBeauty''. Then again, who was expecting something by StephenSondheim to be ''fair''?
*** He did have to contend with a dwarf.
---> ''Dwarfs are very upsetting...''
* In Victorian theatre, the only accepted way for a "fallen" woman - that is, any woman who had sex outside of marriage, or had an affair - to redeem herself was to die. Preferably after seeing the horrible consequences of her actions. One notable example is ''East Lynne'': A woman is convinced by a rival of her husband that her husband is having an affair, and so agrees to run off with him. But the rival abandons her, so she returns to her former house in disguise as a governess to her own child. When she reveals herself to him, he dies. Everyone then finds out who she is, but she falls ill and dies shortly thereafter. Her melodramatic cry on her child's death, "Dead! And never called me mother!" is still quite well-known today.
** Aversion: Creator/WSGilbert's 1874 play, ''[[http://diamond.boisestate.edu/gas/other_gilbert/html/charity.html Charity]]'' has up a woman, Mrs. Van Burgh, who was virtuous in every way, except she had never actually married her husband. She has spent all her time since his death doing good deeds, and trying to rescue other women back to the path of virtue. Victorian theatre demanded that she be ruined, and die in order to be redeemed. Gilbert allowed her to be ruined by public opinion and the hypocritical antagonist (he lectures Ruth, one of the women Mrs. Van Burgh gave a second chance to, on how abominable it is that she is being foisted on society as if she was an unfallen woman. Guess who had seduced her?) - but then both Mrs. Van Burgh and Ruth head off to Australia as traveling companions for a colonial bishop whose son is in love with Mrs. Van Burgh's daughter. You wouldn't believe the uproar this caused in the newspapers of the time, which fell over themselves trying to see which could declare the play more immoral.
** Another aversion. Dickens' ''Literature/DavidCopperfield'' has Emily, David's first love, dumping her fiancé Cam right before their wedding to run away with David's best friend James Steerforth and become his concubine. She ultimately lives, and after [[BreakTheCutie LOTS of misfortune (principally, Steerforth being an absolute]] JerkAss [[BreakTheCutie to her)]], she goes to Australia with her father Daniel. The book also includes Emily's best friend Martha, [[HookerWithAHeartOfGold a prostitute]], who helps Daniel and David to find the missing Emily and also survives.
** Dickens used the trope straight in ''Literature/OliverTwist'' with poor Nancy, who also was a prostitute and ended up dead.
*** This is less "because she's a prostitute" and more "because she hangs around with Bill Sykes." Granted, she does think Sykes loves her, and presumably has had sex with ''him''.
* StephenSondheim does it again in ''Passion'', where Fosca dies three days after, um, a final bit of passion.
* ''Romeo and Juliet'' would be an example, except the two secretly marry before they do that sort of thing.
** Although since they marry against their families' wishes, and the story was originally meant to be a warning tale of young people who fall in love too quickly, do foolish things, and suffer horrible consequences, it still counts as an example of "death as a punishment for socially unacceptable sex".
* Done after a fashion in ''Wicked'' where the very next scene after Fiyero and Elphaba have their G-rated sex scene in 'As long as you're mine' and kiss Fiyero gets beaten to death. [[DisneyDeath He gets better though.]] Sort of.
** The novel, of course, plays it straight.
* TwoWords: ''SpringAwakening''.
* Subverted in "MuchAdoAboutNothing" as Hero is falsely accused of sleeping with another character the night before her wedding. To clear her name, she fakes her death which forces all the characters who ostracized her to realize that they were wrong to mistrust her.
[[/folder]]

[[folder:Video Games]]
* Speaking of [[WebAnimation/ZeroPunctuation Yahtzee]], he's also used this trope... literally. Well, almost. Occurs in ''6 Days a Sacrifice'', part of the VideoGame/ChzoMythos. Janine having sex with Theo was what ended up allowing John Defoe to take full control of her. By the end of it, she got impaled in the chest and literally ''crushed inside a wall''. NEVER have sex when there's obvious signs of someone being partially possessed.
* One of the more controversial things you can do in the ''GrandTheftAuto'' series, since it's introduction into the 3D world, was to be able to take a prostitute to a secluded part of whatever city your in (like in an alley or a closed off section of it), then wait until the car stops shaking. Afterwards, when the prostitute comes out of the car, you could then murder her and get the money back that you spent on the experience (since she then was programmed to return to the game world as a pedestrian that you could kill).
* In ''{{Phantasmagoria}} 2'', it's more like Death by Kinky Sex. The female BDSM fanatic is murdered, while the woman who is having monogamous vanilla sex with the protagonist and wants a committed relationship survives.
* In the ''VideoGame/LeisureSuitLarry'' series, this trope appears twice. In the first game, sleeping with the hooker at Lefty's Bar without protection causes your family jewels to explode a minute or so later. In the second game, you can seduce the maid in your resort hotel room and sleep with her, only to have her brother (who's in the military and likes to shoot things) walk in on you.
* In ''[[http://www.atrianglemorning.com/games/flash.php WhichWay]]'', a flash adventure game, every time you end up with a naked or half-naked woman on screen, you will be ambushed by a monster within seconds.
* A variation occurs in ''{{Shuffle}}!'', where one of the more [[AWizardDidIt magically-inclined]] characters you can choose erases Rin's memories of her during sex. His memory is returned to him by an act of ThePowerOfLove, which she wasn't expecting.
* In the ''SilentHill'' series, any woman who implies that she might perform sexual favors on the protagonist will die in an agonizing way within a few scenes. It began with Maria in Silent Hill 2 and continued with Cynthia in Silent Hill 4.
* Inverted in the third ''VideoGame/GodOfWar''. Aphrodite has sex with Kratos late in the game. She is the only Greek God spared of his wrath.
** This is more a case of DummiedOut, as the designers originally planned for Aphrodite to pull a knife on Kratos if you went back for round two, which would end in her death, but decided against it.
* In the ''VideoGame/NeverwinterNights'' module series ''VideoGame/TheBastardOfKosigan'', you can go through it in such a way that every woman you make out with or have sex with dies soon afterward. Of course, being the non-linear sort of story it is, all of them but Alex can survive too.
** Several quests in ''VideoGame/ADanceWithRogues'', most notably the Dhorn Generals' Heads quest in the first chapter, involve having sex with someone to get something before killing them.
* ''VideoGame/{{Fallout 3}}'' has a house in Minefield with two skeletons embracing on a bed, indicating they may have been lovemaking when the bombs hit.
** In ''VideoGame/FalloutNewVegas'', the player sometimes gets the opportunity to invoke this on others -- most notably, a female main character can opt to screw and then murder Benny in his sleep! Or just make him ''think'' you're going to sleep with him in order to get him vulnerable.
* After awhile of playing ''KaraNoShoujo'' you begin to wonder if maybe the writers were trying to scare teens away from sex. The first set of victims are targeted partially because of this and most of the time the main character has sex he ends up dead soon after. That or the girl does.
* Happens to a seduced NPC in the Human Noble origin in ''VideoGame/DragonAgeOrigins''. He or she opens the door of the playable character's room to investigate a noise and gets an arrow in the chest. However, if you choose not to seduce them, you'll find their dead body slightly further on, so the only real difference is whether or not their death occurs onscreen.
* If you side with Citra in the ending of ''VideoGame/FarCry3'', she [[YouHaveOutlivedYourUsefulness literally backstabs Jason]] after having sex with him.
* ''VideoGame/NetHack'' has the succubus and incubus. Without proper protection, there are quite some ways for an encounter with them to be fatal.
** ''VideoGame/SlashEmExtended'' makes it much more likely for the encounter to cause negative effects for the player, and also adds more ways for the player to die, e.g. suddenly being attacked by the rape demon after they already took off their clothes.
[[/folder]]

[[folder:Web Comics]]
* [[http://yahtzee.comicgenesis.com/d/20020313.html This]] yahtzee takes on the world strip.
* ''ChoppingBlock'' [[http://choppingblock.keenspot.com/d/20110214.html has this too]] -- is there any SlasherMovie theme Mr. Butch didn't try?
* [[http://www.dumbingofage.com/2014/comic/book-4/02-i-was-a-teenage-churchmouse/intent/ This]] ''Webcomic/DumbingOfAge'' strip provides some ConversationalTroping. The morning after Dorothy and Walky's first time together, Dorothy is horrified to learn she overslept and missed a class. Walky jokingly compares their situation to a horror movie; unfortunately, he does so within earshot of [[TheFundamentalist Joyce]].
[[/folder]]

[[folder:Web Original]]
* ''DrHorriblesSingAlongBlog'': Penny dies in the third act, which was also when Captain Hammer started bragging about sleeping with her. During a PRESS CONFERENCE. While it is possible that he is lying (Captain Hammer being a total JerkAss, after all), the fact that Penny looks uncomfortable at his assertion, not outraged, suggests they did it.
** Of course they did.
---> '''Cpt. Hammer''': [singing] This is so nice; I just might sleep with the same girl twice.
* ''Blog/ThingsMrWelchIsNoLongerAllowedToDoInAnRPG [[http://theglen.livejournal.com/89715.html 501-1000]]''
-->'''835.''' I cannot lure out the Psycho Killer into an ambush by having sex with another character.
* [[WeeblAndBob "We were doing Position 97 near a porthole... and she just fell out!"]]
* Parodied in the ''Website/{{Cracked}}'' video [[http://www.cracked.com/video_18666_why-horror-movie-slashers-are-best-wingmen-ever.html "Why Horror Movie Slashers Are the Best Wingmen Ever"]], which features a slasher movie villain deliberately arranging for two good-looking teens to have sex so that he can invoke this trope.
* WatchMojo described this as #10 in their list of "[[http://watchmojo.com/video/id/11819/ Top 10 Horror Movie Cliches]]":
-->''"Let’s kick this list off with the cliché that’s probably the greatest reason many of us enjoy watching gore fests to begin with. Horror films always have people, specifically young adults, getting it on and baring it all. Not just eye candy, it mirrors teen fears around sexuality. As a result, most horror flicks push the parent-approved message of abstinence. Don’t believe us? Then why does the film’s always blonde quote-on quote “whore” get axed and the prudish but keen minded brunette always survive?"''
* In TheNostalgiaChick's review of ''Film/DantesPeak'' she claims that volcanoes have a sapient hatred of fornication, since the first people it kills are a pair of SkinnyDipping tourists and the hero is motivated by a dead fiancée. It also spends much of the movie "cockblocking" him and his new LoveInterest.
[[/folder]]

[[folder:Western Animation]]
* An episode of ''WesternAnimation/{{Futurama}}'' parodies the B-movie tradition by having a robot couple making out in a car say things like "It's okay to let our guard down, even for a moment!" before being attacked by a "scary human".
[[/folder]]

[[folder:Real Life]]
* This was how a lot of people outside of the gay community initially saw AIDS, before they knew more about it.
* Speaking of which, this was the case of STDs during the eras before modern medicine; getting one was basically a death sentence until the last century. Smallpox was small because Syphilis was the Great Pox.
* Général Paul Thiébault tells the story of a naïve young man called Monnet, who discovered sex at twenty with a voluptuous Neapolitan woman. What happened is anyone's guess, but twenty-four hours later, Monnet started bleeding from the nose, mouth and ears and died within a few hours.
[[/folder]]

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[[TheStinger Doesn't]] [[TheLonelyIsland matter, had]] [[http://s3.amazonaws.com/kym-assets/photos/images/newsfeed/000/175/812/tumblr_lra35luUj51qb5gkjo1_500.jpg?1316447516 sex!]]
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