Twin Threesome Fantasy



""I have awoken! And from a particularly good dream involving two Sisters of Battle. Twins they were. Prepare to be purged.""

- Turn Signals on a Land Raider

"Double your pleasure, double your fun!"

- Long-running Doublemint gum campaign

Bob is attracted to Alice. By some process similar to Oven Logic, he imagines that two Alices must be even sexier than one. Sometimes Bob is just fantasizing, but often there's an actual second "Alice" floating around. This may be a twin (of either gender), a product of Applied Phlebotinum, or more rarely a sibling, parent, cousin, or even just someone unrelated who dresses and acts like Alice.

For whatever reason, a fetish for twins is regarded as pretty much G-rated, so characters, especially male ones interested in female twins, can admit to it and not be teased, except for being a general horndog. Pretty much all twin characters who are not played for ugliness-humor or Creepy Twins (and even some who are) can thus be considered Fetish Fuel.

For the record, suggesting this in Real Life is not a good idea. It's even worse to bring up if the person in question does have a twin, as most twins find this just as disgusting as any other type of incest.

Compare Screw Yourself and Twincest, lacking a third party. Girl-On-Girl Is Hot is often behind this. Occasionally, the object of lust can invoke this if they have a Doppelganger Attack-like ability. Subtrope of Three-Way Sex.

Anime and Manga

 * In Higurashi no Naku Koro ni, Oishi approaches Keiichi in a library while he was meeting with Shion. As Oishi already knew that Keiichi and Mion were close, he then proceeds to tease Keiichi about "two-timing with the Sonozaki twins" (Keiichi protests this, though Shion simply ignores it).
 * It's even more apparent in the arc where Shion is introduced, though in that case Keiichi doesn't realize she's a different person (he thinks it's Mion, pretending she has a twin—not helped by the fact that at one point she actually is, too). Cue traditional Higurashi hijinks and inevitable bloody murder.
 * The Hitachiin twins admit to playing this up to get clients in Ouran High School Host Club. Among other things...
 * Irresponsible Captain Tylor has female twins Emi and Yumi Hanner as pilot trainees aboard Tylor's ship. They simultaneously proposition Tylor for sex. Unfortunately for him, they apparently pick the one time that he's too distracted to say "HELLS YEAH!" and interpret it as a rejection — so they just latched onto the gynophobic fighter pilot Koujiro instead, the poor bastard.
 * Since Tylor is perhaps the hardest-to-read character in anime history, he may have rejected them quite deliberately. A later comment implies that he really was paying attention to what they were saying. After all, the girls did take it pretty well, realising that they shouldn't rush to give themselves until they find the one person who's right for them. Besides, he's friends with their father; how could he explain if he'd taken them up on the offer?
 * The title character of Naruto and his "Harem no Jutsu" turns him into several identical naked blond girls. And he calls Jiraiya "pervy"...
 * In Special Duty Combat Unit Shinesman, this is the main motivation for The Lancer: "I can't die yet! I have a date with Turkish twins!!"
 * In Ranma ½, after Ranma has accidentally created a clone of his female half, Kunō comes across two Pigtailed Girls, hugs them, and says "It's like holding roses with both arms!" before being pummeled. Disappointingly (as the concept of Kunō chasing two girl-Ranmas would have fueled endless comedy), this is treated as a single-panel joke.
 * In Black Lagoon, Hansel and Gretel make this trope a thing of nightmares. Too bad no-one warned poor
 * In Full Metal Panic!!, the Creepy Twins Xia Yu Fan and Xia Yu Lan in relation to Gauron. Certainly threesome Fetish Fuel, considering that their relationship to him is most likely not purely of the innocent father-daughter type (or, in the manga, father-SON type).
 * Futakoi is a Themed Harem show with six seperate sets of twins. It literally exists because of this trope.
 * Futakoi Alternative, a successor show with the same girls, but focusing on different characters, and a very different mood, actually played the hero and twin heroines in a more traditional Love Triangle romance. It helps that they shifted the focus onto the one set of twins that were Different As Night and Day.
 * In Utawarerumono, there's [[media:Utawarerumono - 17 - Large 06.jpg|Oboro and the twins, Dori and Gura]].
 * In Pokémon, James could have a Twin Threesome Nightmare, considering his partner/best friend Jessie and the ex-fiancé he's been running from for years (stated as the reason he ran away from home in the first place), Jessiebelle, are nearly identical. You'd think he would've run from Jessie the first time he saw her; it's implied that James either doesn't see it or it's his subconscious reason for being with Jessie in the first place (since he originally had a crush on Jessiebelle).
 * Brock has probably had many a fantasy about having an orgy with the hundreds of Nurse Joys and Officer Jennies out there...which is now an Ascended Meme thanks to this episode.
 * In Otome Youkai Zakuro, Ganryu is in a canonical OT3 with twin sisters Bonbori and Hozuki.
 * In Anatolia Story, Kikurri ends up marrying twin sisters Ryui and Shala, after it is revealed that they have the same taste in men and as a result have been taking turns to go see him.
 * Kiss×Sis, since the twin Ako and Riko are both madly in love with their brother enough to make them play dirty on him while he's asleep. Because they are not related by blood, we can let that half slice, somehow.
 * A genderflipped example happens this very smutty Josei manga. It actually started as a Love Triangle between the girl and the twins, but instead of having the woman choose between them, they decided to "share".

Comic Books

 * Subverted in Watchmen: Laurie wakes up to find Doctor Manhattan has duplicated himself in order to "please her" but ends up freaking out. And she gets really mad when she discovers that . The moral of the story is: always check whether your partner will accept something before you attempt it.
 * In the XXXenophile story "Family Reunion", a space traveller discovers a crippled spaceship inhabited by a pair of female clones. If you've ever read XXXenophile, you can guess what happens next.
 * In The Authority, The Engineer duplicates herself with her nanomachines for some fun with Jack Hawksmoor.
 * Discussed in Generation X (and many fanffiction stories, naturally), where both Monet and Banshee had something of a crush on Madrox (whose power lets him make duplicates of himself) and often had fantasies regarding him and this sort of thing. Later, after he married Layla Miller, it was confirmed in at least one issue that this Trope was played straight.
 * Legion of Super-Heroes; while fans often brought up Triplicate Girl/Duo Damsel/Triad's potential for it, this was never brought up at all in the canon source, even after she and Bouncing Boy married, although there was one G-rated scene where both her "selves" kissed him simultaneously.

Fan Works

 * The inner monologue in the Gantz Abridged episode 08 & 09 has these thoughts about Ms. Fanservice and her unwitting double.
 * An Order of the Stick fanfic explained Vaarsuvius' gender ambiguity away by having V turn out to be Half-Identical Twins who make sure they're never both in view of the rest of the Order at once. Haley found out. And then they have a threesome.
 * With increasing regularity, the That Guy With The Glasses Kink Meme has characters (usually Insano or The Nostalgia Chick) getting off on having sex with Critic and Ask That Guy at the same time. While they're not canon twins, it still counts because of the heavy Fanon.
 * In Axis Powers Hetalia fanon, the apparent twins America and Canada are often subjected to this with others. And if you really like the FACE (France, America, Canada, England) interaction, well then ...
 * Touhou fans have noted that two of the characters with Doppelganger Attacks are Flandre, the second most common source of Legal Jailbait fan-material, and Yuuka, a Memetic Sex God surpassed only by the likes of Marisa. You better believe they've exploited this.

Films -- Animation

 * In the outtakes to Toy Story 2, the old prospector is "interviewing" twin Barbie dolls.

Films -- Live-Action
"Austin: Twins, Basil. Twins!"
 * Something like this actually occurs in the second Austin Powers movie, with a time duplicate.
 * And in the third Austin Powers movie, he meets a pair of Asian twins with designs on him, and begins excitedly/breathlessly gasping "Twins!" He then proceeds to pull out a list of "things to do before I die" and crosses off "Threesome with Japanese twins". (For the record, their names were Fook Mi and Fook Yu.) And when Basil interrupts him, he tries to brush Basil off with:

"Twins: We just wanted to be held. Ford: You got the bonus plan!"
 * The blonde twins at the beginning of The Adventures of Ford Fairlane, running from his apartment


 * In Annie Hall, Alvy's friend Rob conveys just how inopportune the timing was to have to bail Alvy out of jail: "Twins, Alvy. 16 year old Swedish twins".
 * Dead Ringers: Jeremy Irons' character, a suave and self-confident wealthy gynecologist, orders up an evening of "entertainment" with a pair of high-class twin hookers called Coral and Mimsy. Taking it even further, he himself also has an identical twin brother (although not present), and requests that one of them call him by his own name, and the other call him by his brother's name...
 * In Iron Man, a soldier asks Tony Stark if he really slept with all 12 Maxim magazine covergirls that year, and Tony responds that it's technically true; he had a scheduling conflict with March, but luckily the December issue featured twins.
 * In Hellraiser Inferno our hero Detective Joseph Thorn has a dream in which he gets into a grope fest with a pair of twin sisters in kinky leather outfits. But the twins are actually horribly mutilated Cenobites who, near the end, dig their claws under the skin of Joseph's chest and start bloodily massaging his rib cage.
 * Played with in New York Minute. A guy enters his hotel room to find The Olsen Twins, one in a bathrobe, the other in a towel. In awe, he earnestly asks, "Is today my birthday?" thinking his mother had left them for him as a present.
 * In The Adventures of Pluto Nash, Pluto's successful singer friend is married to twins. When asked how he met them, he explains that he met the perfect woman and had her cloned. To the question of which is the original, he rhetorically states, "Who cares?"
 * Bailey suggests this on Outrageous Fortune after Jethro and Van find out she's dating both of them.
 * Machete. Deleted scenes reveal that Jessica Alba's character Santara had a sluttish twin sister (played by the same actress). When Santara walks in on Sis in bed with a stranger and starts snarking her about it, he insists they stop fighting and tries to get Santara to join them. Santara is not impressed.
 * In Spaceballs, there's a cameo by a pair of actual Doublemint Twins. Later on, President Skroob is in bed with both of them.

Jokes

 * A man goes into a confessional booth and says to the priest "Father, I'm an eighty year old man and I've been faithful to my loving wife for over fifty years. I have seven children and thirteen grandchildren and I'm a pillar of the community. Last night, I had sex with a pair of eighteen year old twins. Both of them. Twice." The priest asks him "When was the last time you've come to confession?" "Never Father," he replies "I'm Jewish." The priest is taken aback. "Then why are you telling me?" "I'm telling everybody!"

Literature

 * It's never explicitly stated what goes on in the bedroom of the Duumvirate in the second book, but it certainly involves this trope.
 * In Anansi Boys by Neil Gaiman, villain Grahame Coats fantasizes about Maeve Livingstone saying "Grahame, you are too much for one woman, so let me introduce you to my identical naked twin sister, Maeve II."
 * The Faction Paradox novel Warlords of Utopia has the protagonist fall for and rescue his wife's double from one of the many alternate universes he visits. Back home, both his original wife and "new" one eventually suggest the same idea one day...
 * Robert Heinlein's Time Enough for Love, where the twins are gender-flipped clones of the protagonist.
 * Max in Codex Alera doesn't just fantasize about one of these, he gets one. And it comes up in his first appearance.
 * In Altered Carbon, people can switch bodies (sleeves) on a fairly frequent basis. The main character is propositioned by the wife of his client, and they have great sex for numerous reasons (eg he's empathic, she produces tailored pheromones, etc). He's floored afterward when she tells him she has three (highly illegal) copies of herself, complete with pheromones in storage, just waiting for him
 * Spider Robinson's Lady Slings the Booze features a woman whose personality is split across two identical bodies. (It's complicated.) She eventually uses both bodies on the book's protagonist, giving us the immortal line "You're about to become a hero sandwich."
 * The Star Trek: Stargazer Star Trek Expanded Universe novels feature the Asmund twins, who were raised by Klingons and are not very familiar with human sexuality. One of the sisters notices a crewman ogling them and asks her sister why he's doing that. The sister, being a little more versed in the subject explains that he's probably imagining what it'd be like to sleep with both of them. The first sister is confused, as Klingon sex is extremely violent, and a threesome would be deadly. Also, she thinks that the man should want to have sex with two women who look different for a little variety. She later attacks him for supposedly having these thoughts.
 * An incompetent armchair general in John Maddox Roberts's Stormlands series is mentioned as having twin fifteen-year-old concubines.
 * Rockstar Rick Maggio gets to live this fantasy in George R. R. Martin's The Armageddon Rag. Then it turns out the twins were underage, and he finds himself being blackmailed with photos of the event.
 * In Sergey Lukyanenko's Autumn Visits, Yaroslav and his not-quite-human Envoy duplicate are on a train to Moscow. They meet a woman who warns them that she's married but, after a few drinks, openly tries to sleep with both of them (they introduce themselves as twins), revealing that she has this fantasy. Yaroslav is initially hesitant, but the Envoy (who has all his memories) reminds him that he hasn't had sex in a month. Yaroslav then reasons that the Envoy is pretty much him anyway and agrees.
 * In the prequel (Meaning the characters are about 9) to Lisi Harrison's The Clique series of YA novels, twin Boy Band ThRob's biggest hit is blatantly about this.

Live-Action TV
"Anya: So... you Xanders really do have all the same memories, all the same... (looking downward) physical attributes? Suave Xander: We're completely identical. Scruffy Xander: Yeah, we checked out some stuff in the car on the way over... Fingerprints! Anya: Well, maybe we shouldn't do this reintegration thing right away. See, I can take the boys home, and... we can all have sex together, and... you know, just slap 'em back together in the morning. Suave Xander: She's joking. Scruffy Xander: No she's not! She entirely wants to have sex with us together. Which is... wrong, and, and it would be very confusing."
 * Buffy the Vampire Slayer:
 * In "The Replacement", this is how Anya reacts to Xander's bifurcation:


 * Especially since the second Xander was played by Nicholas Brendon's real-life identical twin.

"Anya: It's not like it'd be cheating. They're both Xander."

"Sarah Jane: So there's three of you? Rose: Jack: I can't tell you what I'm thinking right now."
 * Buffy also has one episode, "Superstar", where Jonathan becomes the best at absolutely everything. The mark of the sexiest man alive? Having two identical blonde twins to sleep with.
 * In Heroes, when Candice is trying to convince Sylar to work for the Company while he tries to regain his powers, the illusions she uses are a geisha, a set of busty twins, and Sylar.
 * On Torchwood, Jack mentions having dated twin (male) acrobats.
 * Doctor Who has a few of these.
 * The series 4 finale has this (and probably why Martha Jones' clone was advised against spilling her secret to Jack):

"The Doctor: Oh, this is how it all ends. Pond, flirting with herself. True love at last. [remembering that Amy's husband is also present] Oh, sorry Rory. Rory: [nearly catatonic] Absolutely no problem at all..."
 * The Comic Relief skit "Space"/"Time" gives us a second Amy, with rather predictable results...

""Two of you! The mind races at the thought...""
 * In "A Good Man Goes to War", River Song reminiscences about Lucky girl...
 * The "Night and the Doctor" DVD extras show where River may have got the idea. They feature multiple Doctors *and* Rivers in the TARDIS, but she's the only one to bring up the possibilities (mainly because there's never more than one of her in the same room at once).

"Shirly: Good lord! I wouldn't want to dream you told me that!"
 * During one arc of Picket Fences, a pair of twins discover that their Synchronization makes it inconvenient and creepier if they have sex outside a threesome (As it may prove inconvenient to suddenly experience your twin's orgasm at, say, the supermarket).
 * The third season of Supernatural opens with Dean apparently having a twin threesome.
 * Roger Sterling gets to live out part of a really sad, pathetic, disturbing one of these in Season 1 of Mad Men, which contributes in no small part to his ensuing heart attack.
 * Barney in How I Met Your Mother almost manages this in the episode "The Scorpion and the Toad", but Lily foils his plan.
 * In an episode of Boston Legal, Denise admits to having a dream of sleeping with two Dennies.

"RepliCarter: My name is Samantha Carter. O'Neill: Little problem with that statement. We've already got one here. Replicarter: There are two of us. O'Neill: If only. Original Carter: ..."
 * In an episode of L.A. Law, Michael Kuzak (Harry Hamlin) related how he had once dated twins: both separately and together. This earned him the envy of his male colleagues.
 * Surprisingly averted by the Battlestar Galactica reboot. Dr. Baltar has slept with three different Sixes (four if you count Head Six), but never two or more at the same time.
 * Joe Pesci runs afoul of two deliciously beautiful but murderous twins in a Tales from the Crypt episode.
 * On Pam and Jim's wedding episode in The Office, Michael is chatting up a lady when Dwight shows up and alerts Michael that he found twins. Michael excitedly blows off the lady and hurries over to find two identical men, and is understandably disappointed. Apparently Dwight just finds twins fascinating.
 * In the UK version, Gareth reveals this as his ultimate fantasy during a staff training day. When Tim is asked for his he replies "I never thought I'd say this, but can I hear more from Gareth please?."
 * Stargate SG-1: The first time the SGC encounters the Replicator duplicate Carter, the following exchange occurs:

"Arthur: But anyway, for that matter, you're not especially... skilled... Well, I mean, There's nothing much er... Well, It's um... kinky mainly because there's both of you... Because otherwise, one by one, there's nothing much... I mean, it's nice but still... (beat) You can't say that to twin sisters, can you?"
 * Gossip Girl: Twins find Chuck Bass.
 * In "Crossover", the first Mirror Universe episode of Star Trek: Deep Space Nine, Intendant Kira is... intrigued by the idea that she might be able to have two Benjamin Siskos by her side.
 * Heavily discussed in an episode of Kaamelott where King Arthur's twin mistresses (the "fisherman's twin daughters") ask the king which one is his favorite:

"Castle: Just like I dreamed... (beat) Did I say that out loud?"
 * Implied in Pushing Daisies; when Olive and Chuck first meet Ned's half-brothers, Olive is just a little too enthusiastic about the fact that they're twins.
 * Castle: The actress playing Nikki Heat in the movie version of Castle's book shows up dressed like Beckett and with her hair dyed to match.

"Megan Prescott: It's incest! There are laws against it! It's just... it's illegal!"
 * A client in Dollhouse apparently has a standing order for twins whenever he comes into L.A.
 * In the first episode of Skins Series 3, Katie's boyfriend suggests a threesome to Emily. She isn't into it. The twin's actresses feel the same way.


 * Played with in an SNL skit from Jennifer Garner's hosting gig. Garner played one half of a set of twins, along with Rachel Dratch, who was made up to look hideous (including a half-formed baby arm sticking out of her head). The two dressed identically, and went on a date with two men, played by Jimm Fallon and Chris Kattan. Fallon got Jennifer, Kattan got Rachel. Kattan's character eventually walked out in disgust, while Fallon made out with Jennifer. The punchline of the skit? Rachel's character eating a slice of pizza while Jennifer's character made out with Fallon's, and saying, "Make out with her all you want--I'm the one with the vagina." Fallon's reaction? Giving the "O.K." hand signal. ( To top it off, there were implications that the twins were conjoined.)
 * Eureka: Carter walks into the infirmary and begins speaking to Allison, not realizing that he is actually trying to talk to a hologram. The real Allison approaches from the other side of the room, and Carter looks between the two of them, "I had a dream that started like this."
 * Implied on Boy Meets World, when Shawn gets really excited when he meets up with a pair of Catholic schoolgirl twins, who he refers to as "Linda and her sister, more Linda".
 * In Nip Tuck, Christian Troy has a threesome with two identical twins in the series' second episode.
 * The old sitcom Double Trouble (where the lead protagonists are identical twins) used this as a twist to the "sisters compete over one guy" theme, with said guy eventually saying he'd love to have both of them at once. It actually ended realistically, which this suggestion causing both of them to realize he was a creep and dumping him.

Music
""I know you like twins - Have I got a surprise! They're identical sisters Attached at the sides!""
 * The song "Debra" by Beck may be this. I wanna get with you / And your sister too / I think her name's Debra
 * A line from "Can't Get Enough Of You Baby" by ? & the Mysterians: "Whenever we kiss/ I get a feeling like this/ I get to wishing that there were two of you"
 * Also a similar line from The Notorious B.I.G. on "Fucking You Tonight": Not the Marriott / We'd be lucky if we find a spot / Next to your sister / damn I really miss the / Way she use to rub my back / When I hit that / Way she used to giggle when your ass would wiggle
 * Played for scary with Evelyn Evelyn; the fictional band characters are conjoined twins who were pimped out in their childhood and again in later life by the owner of the circus they were sold to.

""If you think you're seeing double let me save you some trouble This ain't no two-for-one bargain here, mister 'Cos I'm much more than just twice shy, I've had enough two-timing guys Who only want me 'cos they want my sister.""
 * Less Squicky variation in their song "You Only Want Me 'Cos You Want My Sister":


 * Tragically and Squickily averted in the Vermillion Lies song "Long Red Hair".

Theatre

 * Item 82 on the Evil Shakespeare Overlord List is about the application of this trope to Twelfth Night: "Olivia probably should not say 'Most wonderful!' as if she's thinking 'THREESOME!'"
 * When Rod in Avenue Q decides to come out of his Transparent Closet, Nicky reacts by presenting him with a boyfriend, who inexplicably looks exactly like Nicky, and is named Ricky. Cue Rod emitting various high-pitched noises of delight as he herds the two of them into his apartment.

Video Games

 * Although it never actually goes anywhere, it's pointed out that in Dragon Quest IV, the twins Meena and Maya both have the hots for the male hero. Whether or not it would have ended up as a Twin Threesome Fantasy is left out, as romantic options weren't available for the game (Maya probably would, but Meena probably wouldn't). Sadly, all hints of this were purged from the U.S. version when they removed the party talk option.
 * Dead Rising 2 has twins that fondle one another, fondle other women, and poke fun at Chuck's lackluster "performance". Also, in multiplayer game Terror is Reality, the winner gets a free night with them along with their prize money.
 * In Duke Nukem Forever, Duke Nukem has a pair of twins called Mary and Kate Holsom. In the trailer, Duke is playing the demo of his own game while the twins give him a blowjob. At the same time. They also seem to have a relationship.
 * The Capture the Flag variant has you re-uniting the twins, presumably for the same reason.
 * One of the paths in Summer Days features twin sisters and Itou Makoto
 * In Knights of the Old Republic 2, your character is pursued by a pair of Twi'lek twins. Various jokes are made about male characters finding their very existence sexy.
 * In Summon Night: Swordcraft Story upon finding out her opponents in the next match of the tournament are a pair of twin sisters, Pratty (who regularly tries to shutdown Sugar's talk of marrying her) blushes and imagines "The lovely twin sisters!". Unfortunately, the twins turn out to be less than pleasant people and the idea is dropped.

Visual Novels

 * The Tsukihime pseudo-sequel Kagetsu Tohya features the unlockable side story 'Flower of Thanatos', where one of the possible options is to have Shiki living out a once briefly-entertained fantasy of living with (and sleeping with) the twin maids Hisui and Kohaku. Of course, given that he's trapped in an endlessly repeating day with nothing existing outside the mansion grounds, he's started to have regrets...

Web Comics

 * Holy Bibble does this a few times in its non-Bible-parody strips.
 * Schlock Mercenary had one husband contemplating the issue when his wife was discovered to have been duplicated at the molecular level by the Ancient Conspiracy, [//www.schlockmercenary.com/2002-09-01 here]. Given the number of other people who were likewise duplicated, it has presumably come up several times, from members of both genders.
 * In Evil, Inc.., after discovers that Miss Match made a fully functional robot duplicate of her, she decides to borrow it for the weekend so her husband can live out "THE Fantasy".
 * In Least I Could Do, Rayne's brother Eric gets a very real shot at fulfilling this fantasy when a valentine arc sets him up with twins. However, he pretty much blows his chances by first bragging to everyone how he's on a date with twins instead of paying attention to the same twins, then tries to take them to an extremely low-budget hostel. To summarize: he ruins his chances with a sexy pair of twins because he wants to save some money. Yeesh.
 * Worse: it's his brother, a medical doctor who is generally regarded as wealthy. Damn cheapskate...
 * In Umlaut House here Volair uses his wife's time portal to do this in a rare example where the twins involved are male (and knowing Volair it could have also been an instance of Screw Yourself).
 * Linburger has a pair of Gender Bender twins who are the objects of a threesome fantasy of one of the characters.
 * In Turn Signals on a Land Raider, an incident here that became a meme. "Twins They Were!"
 * In Rogues Of Clwyd Rhan Kel's husband Jodoque has some interesting fantasies (mildly NSFW) after meeting Kel's two near-identical sisters (unlike her they have fairy wings. Long story). Later on he's slightly less enthusiastic when one of the winged sisters gets into bed with him (nudity) and pretends to be Kel.
 * Saturday Morning Breakfast Cereal has someone who needed a clarification that Astral Projection cannot be used for this purpose.
 * Gunnerkrigg Court has Smitty's thought bubble "intentionally left blank" when Annie and Parley [//www.gunnerkrigg.com/?p=2100 discuss] a possibility that could lead to two copies of Parley existing simultaneously.

Web Original

 * Gaia Online's Liam seduced the Von Helson twins when they were trying to kill him in 2007. If you visit him in his shop, he complains that they still have it bad for him.
 * In the Dating Sim-based "Love Charm II" minigame, one of the female options is the Gemini Twins.

Western Animation

 * Played with in a Danny Phantom episode where Tucker dreamed himself with two duplicates of a female character named Star (who in "real life" has no twin).
 * Hank Venture lusts after both Nancy and Drew Quymn in The Venture Brothers, but they both only have eyes for Dean (who in a subversion of the trope is interested in neither).
 * Family Guy: when Peter thinks he's Larry from Three's Company, he bursts in the door saying "Jack! Twins! Swedish! My place! Now!"
 * Johnny Test's sisters Mary and Susan keep trying to get Gil to "fall in love with them". Note the operative word. A unique use of the trope indeed.
 * In Daria, Brittany thinks Kevin is going with both Daria and Quinn. His response: Whoa! Twins!
 * An episode of Duckman has blond twin bombshells hire Duckman and Cornfed to "help" with their love lives. Nothing comes of it, because Duckman can't get over his guilt towards his dead wife, and Cornfed has some sort of off-screen breakdown long before they get near a bed.
 * In an episode of Stroker and Hoop, this situation comes up with a pair of hot blonde twins. However, it turns out they are members of the "Kind Cannibal Cult" which harvests the vestigial organs from people so they can eat them.
 * In Dr. Zitbag's Transylvania Pet Shop, Dr. Zitbag has a mutual attraction with his neighbors, the Exorsisters
 * A case of Getting Crap Past the Radar occurred in the Miraculous Ladybug episode "Timebreaker". The eponymous villain's power causes Ladybug to shift an hour into the past, resulting in Cat Noir being confronted by two versions of the heroine at once. "Two Ladybugs?" he quips. "I'm in Heaven!"
 * Played for laughs at the end of the 4th season of Rick and Morty, where Jerry is very accepting of the idea of having two wives, even if both of them are Beth.