History Main / NotRightInTheBed

->''"This week on Creator/{{BBC}}3: When a mysterious alien force compels a beautiful woman to have sex with any male that catches her eye, Series/{{Torchwood}} investigates [[FanService why this plot has appeared in every sci-fi series ever made]]."''

* ''Manga/MahouSenseiNegima'' has several versions of this:

** Later, during the Kyoto arc, the girls use a bunch of the same magical duplicates to take their places while they visit Konoka's [[BigFancyHouse temple complex]]. When they get back, the duplicates are doing a [[YoUCanLeaveYourHatOn striptease]].

* In VideoGame/{{Tales from the Borderlands}} if you've made certain decisions, Handsome Jack's AI will possess Rhys and act flirtatious around Fiona and Sasha, calling Fiona pet names like "sweetie" and "baby" and slapping Sasha on the butt, leading everyone else to wonder what the hell is wrong with him.

* In ''Webcomic/OnePunchMan'' NSFW fanfic ''[[http://archiveofourown.org/works/5775328/chapters/13309912 Mirror Mirror]]'' the first thing that [[BadFuture alternate]] [[SetRightWhatWentWrong future]] [[EvilTwin Saitama]] does [[SlashFic is seduce Genos.]] Genos thought that the alternate Saitama's passion was very uncharacteristic but goes along with it thinking that Saitama shared Genos' feelings for him. They both get really into it..until the actual Saitama interrupts them.

* ''Night Probe!'' by Creator/CliveCussler. {{The sociopath}}ic MasterOfDisguise Foss Gly sleeps with Henry Villon's mistress and co-conspirator. She notices something is off about his behaviour (mainly because 'Villon' is harsher than usual) but when she complains to the real Villon later he brushes it off, simply assuming that he was in a bad mood. He gets a shock when he's finally confronted by his doppelganger, who reveals he's been sleeping with both his mistress ''and'' his wife (the latter is more shocking to Villon).

->''"This week on Creator/{{BBC}}3: When a mysterious alien force compels a beautiful woman to have sex with any male that catches her eye, Series/{{Torchwood}} investigates why this plot has appeared in every sci-fi series ever made."''

* ''Night Probe!'' by Creator/CliveCussler. The sociopathic MasterOfDisguise Foss Gly sleeps with Henry Villon's mistress. She notices something is off about his behaviour (mainly because he's more harsher towards her) but when she mentions it to Henry later he brushes it off, simply assuming that he was in a bad mood. He gets a shock when he's finally confronted by his doppelganger, who reveals he's been sleeping with both his mistress ''and'' his wife (the latter is more shocking to Villon).

* In ''Series/BrainDead2016'', one of the first symptoms of infestation by the Space Bugs is an uncharacteristic aversion to sex.

* In Jewish folklore, one story tells of the demon king, Asmodeus impersonating King Solomon. While in this guise, he propositions all of Solomon's many wives (and in some tellings succeeds in sleeping with all of them). The first clue to him not being the real Solomon, is that he approaches them when they were menstruating, a major taboo. His impersonation is revealed when he tries to seduce "his" [[OedipusComplex mother]], Bathsheba.

* In the second book of ''Literature/CodexAlera'', Max has temporarily replaced the incapacitated First Lord and (ends up seducing the First Lady. He doesn't get caught, though Sextus does have words with Max about that when he recovers.

* The one where Tasha Yar is infected by some sort of hedonistic virus which leads her to experiment on whether the android Data is "fully functional". (He is.)
-->Data? This ''[[ThatDidntHappen never happened]]!''

* ''ComicBook/TeenTitans'' When Starfire was temporarily replaced by a shapeshifter from an alternate universe ([[RetCon or so she was at the time]]), the shapeshifter was much more sexually aggressive than her boyfriend Nightwing was used to. Nightwing didn't suspect anything, mostly because they'd been having problems and he was just happy that the problems seemed to have evaporated.

** When Homer Simpson was kidnapped and replaced by [[HughMann a lookalike with an obvious German accent and no understanding of Homer's personality]] in extended {{Parody}} of ''Series/ThePrisoner'', it's [[{{Squick}} squickily implied]] that his offer of "efficient German sex" is what keeps Marge from realizing anything is amiss for ''several months''.

* ''Series/StarTrekEnterprise''. In "The Crossing" non-corporeal aliens take over various crewmembers, and stuck-up Brit Malcolm Reed starts hitting on T'Pol in a sinister manner.

** When Faith ends up in Buffy's body, she sexually taunts Spike and then aggressively seduces Riley. And then has the trope turn around and backfire on her when he tries to actually ''make love'' with her instead of just getting freaky; the intimacy of the act is too much for her to handle and she flips out.
** Giles takes Jenny Calendar home after she gets knocked out, where she starts acting aggressively sexual. He thinks it's maybe due to her earlier injury but he's not on his game just then, and doesn't realize it's an early stage of demon possession.
** Xander, down in the dumps after Cordelia breaks up with him (and a love spell of his seems to have fizzled), is surprised when, palling around with Buffy and making a joke about "lap dancing", he finds her up for it -- between being slow on the uptake and a case of wishful thinking, he doesn't realize the love spell has affected her (and every other woman around him).

* ''Series/{{Smallville}}''
** When Lana becomes a vampire, this happens.
** This happens every other episode on ''Smallville''.

* When Faith ends up in Buffy's body in ''Series/BuffyTheVampireSlayer'', she sexually taunts Spike and then aggressively seduces Riley. And then has the trope turn around and backfire on her when he tries to actually make love with her instead of just getting freaky; the intimacy of the act is too much for her to handle and she flips out.

** Xander, in the dumps after Cordelia breaks up with him (and a love spell of his seems to have fizzled), is surprised when, palling around with Buffy and making a joke about 'lap dancing', finds her up for it - between being slow on the uptake and a case of wishful thinking, he doesn't realize the love spell has affected her (and every other woman around him).

* ''Series/TheXFiles''

* ''[[Film/TheAssignment1997 The Assignment]]'' (1997). Annibal Ramirez, a Cuban-American {{doppelganger}} of Carlos the Jackal, is trained to impersonate the notorious terrorist in a CIA/Mossad plot to make it appear Carlos has turned informant so he will be assassinated. To avert this trope a former lover of Carlos instructs Ramirez in how Carlos has sex. It works well enough to fool a current lover of Carlos, but Ramirez's wife becomes suspicious that he's cheating on her because [[BecomingTheMask he's changed his bedroom habits]].

* ''The Assignment'' (1997). Ramirez, a Cuban-American {{doppelganger}} of Carlos the Jackal, is trained to impersonate the notorious terrorist in a CIA/Mossad plot to make it appear Carlos has turned informant so he will be assassinated. To avert this trope a former lover of Carlos instructs Annibal Ramirez in how Carlos has sex. It works well enough to fool a current lover of Carlos, but Ramirez's wife becomes suspicious that he's cheating on her because [[BecomingTheMask he's changed his bedroom habits]].

* In a Literature/SherlockHolmes TV movie, an aristocratic woman is using her footman for sex, but he has an EvilTwin who's a SerialKiller. Apparently they swapped positions from time to time. She's in serious denial, and Watson says that her woman's instinct must have told her there was something wrong about her lover.

* ''The Assignment'' (1997). Ramirez, a Cuban-American {{doppelganger}} of Carlos the Jackal, is trained to impersonate the notorious terrorist in a CIA/Mossad plot to make it appear Carlos has turned informant so he will be assassinated. To avert this trope a former lover of Carlos instructs Annibal Ramirez in how Carlos has sex. It works, but Ramirez's wife becomes suspicious that he's cheating on her because [[BecomingTheMask he's changed his bedroom habits]].

* ''GetSmart'': When Max rescues girl-in-distress Carol Burnett from a KAOS laboratory, they go through some rooms with an experimental drug that induces fear and lust, but only in women. First, she freaks out with shrieking horror, then, in the next room she's gone all sultry and overaffectionate, freaking ''him'' out. Then Agent 99 bursts in, and...

* When a vengeful spirit doll in ''Manga/RanmaOneHalf'' [[FreakyFriday trades places]] with Akane's soul [[DemonicPossession in her body]] (leaving Akane herself [[AndIMustScream trapped as a doll]]) she attempts increasingly seductive approaches to get Ranma to lower his guard... so she can kill him. All but one have [[HilarityEnsues unforseen interruptions]].

* In ''Film/{{Ghostbusters 1984}}'', Dr. venkman is very interested in team's client Dana. After she gets possessed by Zuul and starts heavily come on to him, he quickly realizes that something is wrong.
* In ''Film/FaceOff'', cop Sean Archer and crook Castor Troy exchange faces and lives; they immediately go about resolving each-others' family problems in their own ways. Castor, however, uses the situation to his sexual advantage. Sean's wife, Eve, thinks his romantic behavior is odd, but doesn't see through it until the switch is actually revealed.
* When a man in the movie ''Film/{{Slither}}'' is posessed, one of the first things he does is have sex with his wife. The wife found it a little strange he was acting so horny, but just the same liked the sex, saying something to the effect "He was like a child, exploring my body for the first time."

* In the movie ''Film/{{Dave}}'', the President's wife figures out that her husband was replaced with a double because he looked at her legs, while the actual president has long since succumbed to the Coolidge Effect. When Dave finds out she knows, his first thought is that she figured it out after seeing him in the shower.

** Another example kicked off the series-spanning running gag of Troi's mother aggressively pursuing a mate. Of course, for Betazed women this perfectly natural: their sex-drive is known to double (or even quadruple) when they reach a "mature" age.
* Lwaxana Troi's second guest appearance on ''Series/StarTrekDeepSpaceNine'' involved an unusual complication of this normal condition when she started "infecting" people around her with her own amorous mood. The result was an episode that launched a thousand 'ships, as any character with even a latent attraction to another suddenly had their libido kicked into overdrive. Specifically: Bariel (who was dating Kira) pursuing Dax, Dax pursuing Sisko, Jake pursuing Kira, Kira and Bashir pursuing each other (including a heavy make-out session where they desperately beg to pulled apart before they have sex), and Quark pursuing Keiko. All while Odo tries to fend off Lwaxana Troi's advances.

* ''GetSmart'' - when Max rescues girl-in-distress Carol Burnett from a KAOS laboratory, they go through some rooms with an experimental drug that induces fear and lust, but only in women. First, she freaks out with shrieking horror, then, in the next room she's gone all sultry and overaffectionate, freaking ''him'' out. Then Agent 99 bursts in, and...

* Subverted in ''VideoGame/EatLeadTheReturnOfMattHazard'', Matt Hazard, a sentient, videogame character, is helped in his fight for survival by mousy female programmer named QA, whose ingame avatar is colored blue. She berates Matt for both his old one-liners and for hitting on her. Later, QA reappears colored red, and comparatively sassy. After a few mess-ups, blue QA finally reappears, and red QA tells Matt he has to figure which one is real. Matt, being experienced with several game genres and is, by consequence, incredbly genre-savvy, makes a comment to red QA to the effect "Oh come on. I knew you were the evil twin a long time ago."

* In ''Webcomic/ItsWalky'', Joyce's "evil" clone is easily identified by the fact that she merrily seduces whichever parts of the male cast is available (the resident JerkAss, as it turns out). Joyce's response... ain't pretty. Or surviveable.

* ''WesternAnimation/FantasticFourWorldsGreatestHeroes'': in the episode "Doomed", Doctor Doom [[GrandTheftMe swaps bodies with Reed]]; one of the signs that things are off is that "Reed" flirts with Sue, who he's not involved with in this adaptation.

* In ''Series/OrphanBlack'', Paul begins to suspect that something is up with his girlfriend [[spoiler: and test subject]] Beth when she starts acting very sexually aggressive. In reality, Beth committed suicide in the first episode and her clone Sarah stole her identity.