[[quoteright:314:[[WesternAnimation/AmericanDad http://static.tvtropes.org/pmwiki/pub/images/american_dad_gaydar_6388.png]]]]
[[caption-width-right:314:Not just [[PlayedForLaughs inaccurate]], ''[[JustifiedTrope it doesn't work, either]].'']]

->''Nobody's bi, that's just a gay guy who sometimes bangs a lady.''
-->--''Series/SaturdayNightLive''

The aspect of works of fiction where there is a lack of bisexual characters despite the prevalence of bisexual people In Real Life, and often don't even acknowledge their existence. Although some series don't address any sexuality specifically, even gay characters tend to be more numerous.

Almost any character in a same-gender relationship or professing a same-gender attraction is assumed by the others to be either gay or joking. If the existence of bisexuals is acknowledged, they're usually depicted as [[AnythingThatMoves very promiscuous and totally defined by sex]], [[DepravedBisexual and sometimes even as predatory]] (mirroring prejudices leveled against real life bisexuals). A few characters do manage to use a version of AmbiguouslyGay to [[GettingCrapPastTheRadar avoid scrutiny]] (see HideYourLesbians). A function of this is when a character who has been seemingly heterosexual until this point falls for a member of their own gender, they jump the fence and become ''only'' interested in their own gender from that moment on; the possibility that they might be bisexual is never even brought up.

The trope especially purports that there are no bisexual '''''men''''', particularly in Western productions. Some female characters, due to the GirlOnGirlIsHot and SweepsWeekLesbianKiss rules, can explore all sides of their sexuality as much as they want, especially if they're identified as [[ReallyGetsAround promiscuous]] or plain [[DepravedBisexual evil]]. However, such characters will rarely call themselves bisexual; they may insist they're straight, or just leave it up in the air. Meanwhile, since male characters often act as the AudienceSurrogate, their sexuality has to be strictly heterosexual, lest the show be forced into the MinorityShowGhetto.

This trope is, of course, [[TVNeverLies not Truth in Television]] in the sense that bisexuals exist. It ''is'' TruthInTelevision in the sense that bisexuals, unfortunately, have often been faced with prejudice and disbelief from hetero- and homosexuals alike on the grounds they "have to be" one or the other, personal testimony of said bisexual people be damned. In RealLife, this phenomenon is occasionally called [[http://en.wikipedia.org/wiki/Bisexual_erasure Bisexual Erasure]].

See also SuddenlySexuality and AThreesomeIsHot. Compare IfItsYouItsOk, where an otherwise gay/straight character expresses interest in someone outside their usual target zone with nary a mention of the B word. Contrast BiTheWay and DepravedBisexual. Also contrast ButNotTooBi, which is essentially this trope in reverse--a character who is established as bisexual yet only shows interest in one gender. The polar opposite of EveryoneIsBi, where either an unusually high number of characters seem to be at least mildly bisexual or sexuality is never presented as an issue.

[[noreallife]]
----
!!Examples

[[foldercontrol]]

[[folder:Anime and Manga]]
* This is the [[InternetBacklash controversy]] among the fandom which the title character of ''LightNovel/HaruhiSuzumiya'' faces regarding her sexuality, even though she is clearly attracted to both Mikuru and Kyon, and actually spells it out in the first episode:
-->'''Haruhi:''' I don't care if it's a boy or a girl!
* In the yuri manga ''Manga/IndigoBlue'' the main character, Rutsu, is pretty clearly bisexual--though she prefers women, she admits to having had genuine feelings for her ex-boyfriend and to sometimes enjoying sex with men. However, her decision to accept her attraction to women and begin a same-gender relationship is consistently referred to as "becoming a lesbian" or "sinking into lesbianism", which not only avoids use of the term "bisexual," but implies it to be some kind of irreversible process (i.e. she can never go back to dating/sleeping with men now).
* The fifth ''Manga/SailorMoon'' manga, called simply ''STARS'', featured cross-dressing Sailor Senshi named the Sailor Starlights, and one of them, Sailor Star Fighter, has feelings of affection towards Sailor Moon. They are not a major part of the storyline, and Star Fighter only makes it clear in passing. But when this became a major part of the [[Anime/SailorMoon anime]] adaptation, ''Sailor Stars'', Star Fighter and the other Starlights became physical males in their civilian forms to keep Usagi from being seen as a maybe bisexual. Creator/NaokoTakeuchi was not amused by this in the slightest, although she stopped short of disowning the anime. The anime itself only acknowledges this awkwardly in one scene where the Starlights' Princess asks Fighter "You take these forms on earth?" and Fighter nervously responds "To attract only women, this form was easiest".
* Despite the tendency for YaoiGenre manga to have an EveryoneIsBi trend, many or most don't say that the characters like men and women and tend to go more for the trend of "Straight, just dating/in love with a man." Despite having a clear interest in men/a man, bisexuality often isn't even ''considered'' in-universe and these characters either automatically come to the conclusion that they're gay (or "gay now") or spend their time insisting that their current partner is [[IfItsYouItsOkay as exception.]]
* Minto from ''Manga/TokyoMewMew'' is AmbiguouslyBi--she expresses a rather excessive admiration for her {{Oneesama}} Zakuro (including a love confession that [[StealthPun could go either way]]), but also seems interested in boys, most notably when Ichigo asks the Mews what they find attractive to and Minto thinks of a male dancer. For some reason, the 4Kids dub [[DubText changed this]], switching the image of a dancer into a picture of Zakuro, tremendously increasing the LesYay. Given that 4Kids obviously isn't all that keen on queer characters in childrens' TV shows, the only sensible reason anyone's been able to come up with to explain this is that they were less willing to have a subtextually bi character than a subtextually gay character.
[[/folder]]

[[folder:Comic Books]]
* In the ''WesternAnimation/AdventureTime'' comic ''ComicBook/AdventureTimeMarcelineAndTheScreamQueens'' it is quite obvious that Marceline and Princess Bubblegum are experiencing sexual tension in their relationship. This is evident in Marceline's clear jealousy of Bubblegum's feelings for fellow bandmate, Guy, and Bubblegum's reaction to Marceline admitting to said jealousy. However, many fans argue that Bubblegum's attraction to Guy means that she could not possibly have an intimate relationship with Marceline.
* John Constantine of ''ComicBook/{{Hellblazer}}''. In issue 51 he mentions that he's had a few boyfriends, though it remains lip-service bisexuality until the "Ashes and Dust in the City of Angels" story arc, where he seduces and is shown (in very tasteful silhouettes) having sex with the guy he is conning at the time.
* Though averted in ''ComicBook/XFactor'', in which Rictor and Shatterstar (both men) have a relationship even though Rictor was previously interested in a female teammate and Shatterstar is [[AnythingThatMoves taking a leaf from Captain Jack Harkness]], it is played painfully straight by many of the book's readers, who responded with confusion and dismay, not because of the relationship (well, some because of that, but they're not relevant here) but because it was ''clearly'' blatant disregard for continuity (in their eyes) to show someone being interested in women in one issue and men in another. It's also played (somewhat) straight in the comic itself: while Shatterstar is happily and enthusiastically bisexual, Rictor is gay, and ''always has been'', deep down.
* In the pages of ''Comicbook/XMen'', it's revealed that the [[FishOutOfTemporalWater time-displaced, younger version of Iceman]] learned he was gay. Since his older version has been known to have girlfriends in the past, he questions if he's actually bi-sexual. The young version of Jean Grey more or less tells him there's no such thing as bisexuals and that the older version of Iceman [[UnfortunateImplications simply chose to stop being gay]] since being a mutant was already hard enough.
[[/folder]]

[[folder:Fanfiction]]
* In SlashFic, when a character previously known only to get involved with a different gender, reveals his having a same-gender attraction, it's quite common for another character to respond with something along the lines of "But you were married!". It's also quite common for characters previously known only to get involved with a different gender to have an attraction to or hook up with someone of the same gender and suddenly realize that they're gay. It would make a lot more sense in most cases for them to be bisexual.
* In the ''Series/{{Psych}}'' fanfic ''[[http://www.fanfiction.net/s/5713948/1/Lassiter_learns_How_To_Bend Lassiter Learns How to Bend]]'' and its sequels, Lassiter has a gay acquaintance from his academy days, [[OriginalCharacter Russell Santos]], who claims that there is no such thing as bisexuals, even though his own partner of fifteen years lived with a woman before they got together. The partner himself is quite adamant about the fact that she was not his [[TheBeard beard]], but that he was in love with her for real. Lassiter is understandably miffed when Russell tells him that his relationship with Shawn is doomed because they both identify as bisexual.
* Willow tries to claim this in ''[[http://www.tthfanfic.org/Story-22672-5/dogbertcarroll+Links+Broken+Bonds+Forged.htm Links Broken, Bonds Forged]]'' when Faith mentions she's bi, because Willow's mother wrote a paper about how bisexuality doesn't exist.
-->'''Faith''': "All I know is that I like a big slab of sausage most days, but occasionally I get bored with that and feel like having a taco.”
[[/folder]]

[[folder:Film]]
* ''Film/BrokebackMountain'' averted this by having the main characters be bisexual, but pandering to this trope nevertheless led to the movie being marketed as a gay love story.
* ''Film/ChasingAmy'' deals with this trope in-universe, when the bisexual Alyssa identifies as a lesbian for the first half of the film; it's implied that she considered it easier to deny her attraction to men than to deal with the social ramifications of bisexuality.
* In ''Film/EatingOut'', when Troy claims to be a bisexual, he is met with every character around him shouting, "THERE'S NO SUCH THING!!!"
* ''Film/INowPronounceYouChuckAndLarry'' is about a pair of straight men who enter into a [[TheBeard fake gay marriage]], and must pretend not to be attracted to women so that they won't be found out. While the movie pays lip-service to bisexuality with Captain Tucker's closing speech, there was no indication that it's possible for a man to be attracted to more than one gender, and Adam's character's affairs with women in the past becomes a major plot point. The entire "conflict" could have been ended if [[IdiotPlot Chuck just said he was bisexual and in an open relationship with Larry.]]
* In ''Film/TheKidsAreAllRight'', which was directed and co-written by a lesbian, Jules has (and quite clearly enjoys) sex with a man, but has crappy sex with her wife. Nevertheless, she continues to call herself gay, not straight or bisexual. Needless to say, this has caused a lot of controversy and is often seen as perpetuating a message along the lines of "lesbians secretly want men".
* In ''Film/LegallyBlonde'', when a witness is tricked into revealing that he has a boyfriend, this is considered proof he couldn't have had an affair with a woman; in addition, Elle says "gay men know designers, straight men don't". Apparently there are, you guessed it, no bisexuals. The musical version addresses the issue (at least in part) by having the aforementioned boyfriend testify that the witness in question "never, ever, ever, ever swings the other way."
* In the film version of ''Film/QueenOfTheDamned'', Lestat's canonical male love interests from the novels are nowhere to be found in the film. Nicki's absence was especially jarring to book fans, considering his crucial importance to Lestat's backstory (in ''[[Literature/TheVampireChronicles The Vampire Lestat]]'', it was Nicki's Stradivarius that he played to wake Akasha). One of the novel's female characters (who had no romantic or sexual interest in Lestat) was PromotedToLoveInterest in the film to compensate for the removal of the other male characters.
* In ''Film/{{Skyfall}}'', James Bond makes a (possibly joking/bluffing) comment to a villain, who is threatening him with rape, about having slept with a man before. This led to talk about whether James Bond--who's had, and clearly enjoyed, more sex with women than just about any non-pornographic movie character--was gay. No bisexuals indeed!
* Clay from ''Film/LessThanZero'', who was bi in the book is only seen sleeping with a woman in the movie.
[[/folder]]

[[folder:Literature]]
* Briefly referenced in ''Literature/{{Brimstone}}''. Early in the book, an officer points out that a murder victim had "perverse sexual tendencies". When Literature/AgentPendergast asks what these are, the cop replies that he "liked men and women". Pendergast then matter-of-factly points out that ''thirty percent'' of all men have such tendencies, to which the cop replies: "Not in Southampton [the town where this is taking place] they don't!".
* Sexual orientation in ''Literature/{{Gone}}'' is pretty much always discussed in terms of gay/straight, with no indication that someone could be in between, although there is a lot of controversy involving a certain Zil Sperry.
* There is an argument IN the ''Literature/HarryPotter'' fandom as to whether the subtext suggests Remus Lupin and Sirius Black are romantically attracted to one another. Tonks/Remus shippers argue that Remus's marriage to a woman disproves this and that the poster on teenage Sirius's wall of girls in bikinis disproves it also. Of course, they could both be bisexual.
* In Creator/GregEgan's short story ''[[http://www.utilitarianism.com/greg-egan/Reasons-To-Be-Cheerful.pdf Reasons To Be Cheerful]]'', the narrator, due to repaired brain damage, is given the ability to design his own likes and dislikes, starting from a blank slate of general approval. With regards to his sexuality, he starts off bisexual, but decides that he must choose to be either gay or straight, justifying the decision using nearly every stereotype about bisexuality there is.
-->"I didn't want to be bisexual. I was too old to experiment like a teenager; I wanted certainty, I wanted solid foundations. I wanted to be monogamous, and even if monogamy was rarely an effortless state for anyone, that was no reason to lumber myself with unnecessary obstacles."
* In ''Sing You Home'' by Creator/JodiPicoult, one of the main characters, Zoe, becomes involved with a woman after her divorce. However, she calls herself a lesbian despite the fact that she admits being attracted to and in love with men. Her partner, Vanessa, is a school counselor and frequently counsels LGBT teens, but never mentions any bisexuals.
* Appears in-story in Creator/StephenKing's ''Literature/TheStand''. When Stu Redman (who comes from a small town in Texas) hears that Dayna Jurgens is bi, he doesn't even understand the term first. Later, when Dayna flirts with him and kisses him "for good luck" before she goes on a mission, he wonders how she could be a lesbian.
* Creator/LoisMcMasterBujold's ''[[Literature/VorkosiganSaga Barrayar]]'' plays with the culture clash of sexuality mores: the BigBad tries to mess up the Vorkosigans' marriage by revealing Lord Vorkosigan's bisexuality. On Barrayar, that's a taboo (as is pure homosexuality). Lady Vorkosigan, being from a planet where the only rules about sex are "it has to be consensual" and "having kids requires governmental approval", absently responds, "Was bisexual. Now monogamous," and has to see the other's reaction to realize this was an attempt to blow up the marriage. In a later book, Lady Vorkosigan explains that her husband is bisexual, leaning toward soldiers; her own military background lets him have his cake and eat it too. (Brings more meaning to all the times he calls her "my Captain.")
* Anne Frank was bisexual, and wrote quite a bit about her attraction to girls and women. Many versions of ''Literature/TheDiaryOfAYoungGirl'' edited these versions out, and their inclusion has often been a factor in having the book banned from schools. (That, and [[SoleSurvivor her father]]'s input.)
[[/folder]]

[[folder:Live-Action TV]]
* [[UnsympatheticComedyProtagonist Liz Lemon]] of ''Series/ThirtyRock'' decrees on a talk show in "Kidney Now!" that "There's no such thing as bisexual. That's just something invented in the nineties so they could sell more hair products." However, [[JustifiedTrope it should be noted]] that it's made obvious Liz is not qualified to give relationship advice.
* Two of the men (Justin and Max) who have slept with Edina of ''Series/AbsolutelyFabulous'' became gay, apparently as a direct result ("You sure know how to turn them"). There is no evidence that they were ever attracted to men before, or were at all attracted to women afterward. However, in a episode featuring Whoopi Goldberg she claims that everyone is at least [[EveryoneIsBi a little bit gay]].
* An episode from the first season of ''Series/{{Brothers and Sisters}}'' invoked this trope when Kevin was trying to figure out if a guy he was interested in, Chad, was gay or straight. When one of his siblings suggested that the guy might be bi, his answer was that no one is really bi, and that everyone has to "make a choice" eventually. A few episodes later, after they had been seeing each other for a while, Kevin decided that he was mistaken and that Chad was living proof that someone could really be bisexual.
* ''Series/BuffyTheVampireSlayer'':
** In the first few seasons, Willow is portrayed as straight: she has a crush on Xander, and has a relationship with Oz. However, once Tara enters the pictures, she's just "gay now". The idea that she might be attracted to ''both'' men and women is never brought up, which is especially jarring considering the episode where she realises her feelings for Tara makes it abundantly clear that she has lingering feelings for Oz at the same time.
** After Buffy and Satsu hook up in the season 8 comics, several good reasons are given why they can't stay together, but apparently the main reason is that the former is "not a dyke". But could she be bi? The possibility isn't so much as alluded to. Later, we get Kennedy saying "You're not the only fool to ever wrinkle the sheets with a straight girl", which is arguably fair, but the possibility that she's bisexual still isn't mentioned. Her straightness is treated as just obvious. Even Xander gets in on it: when Buffy admits her attraction to him, he says that he is on the list as a potential romantic interest "right after gay. I rate almost as good as trying to change your sexual orientation. You went ''through gay'' to me."
* Apparently Mary Beth Lacey was married off to avert initial audience reactions that ''Series/CagneyAndLacey'' were a "couple of dykes".
* In an episode of ''Series/{{Cheers}}'', one of Rebecca's ex-boyfriends comes to the bar, and she's thinking of taking him back. When, with Rebecca absent, an off-hand mention of an ex-boyfriend of his own makes Sam realize that winning him back is impossible (which, of course, it turns out to be), and starting off a plot of [[CannotSpitItOut wondering whether to tell her]]. Note that he doesn't say he's gay until near the end of the episode (when Rebecca's trying to seduce him).
* Subverted in the ''Series/ColdCase'' episode "Triple Threat". Chelsea comments that the murder victim, Elena, was a dating a man in high school, and she later saw him in a gay bar. She seems to think that he's gay, but if Elena found out, he would be willing to kill her to keep it hidden. When the detectives question him he openly states that he's bisexual. The detectives take him seriously, and he's quickly (and accurately) dismissed as a suspect.
* PlayedForLaughs on the Creator/ComedyCentral roast of Creator/WilliamShatner, where the other comedians repeatedly and pointedly refer to Andy Dick as "gay," while the camera cuts to him getting steadily more indignant in the background.
* ''Series/CoronationStreet'':
** Todd realised he was gay after being in a loving and committed relationship with Sarah for nearly three years. Even after coming out he admitted he still loved Sarah and enjoyed being in a relationship with her but he never entertains the possibility he has an attraction to multiple genders (he previously also dated Candice) and he's only had relationships with men since.
** Occurs again with Marcus and Maria's relationship. Marcus identifies as a gay man who fell in love with a woman. Maria insists that he calls himself straight. Maybe bisexual is the word they are both looking for?
* ''Series/{{Degrassi}}'' almost escaped this, but then fell right back into it once TheLadette Lesbian Alex was written off the show. When they started the plot, Paige's feelings for Alex had her confused, eventually coming to terms with not having labels attached. Having Paige openly date guys and Alex at the same time. Alex also said she was bi at the start of the arc, then revealed herself to be a lesbian by the middle of it. Paige stuck with bisexual up until Alex left the show, then it was a 'phase' and Alex was '[[IfItsYouItsOkay the only girl for her]].' And while ''Degrassi'' usually has at least one gay or lesbian character (plus satellite romantic interest cast), the line is clearly defined each time.
* In one episode of ''Series/DesigningWomen'', Suzanne mentions that she told some guy's parents that he was bisexual because, "I don't believe in bisexuals. I figure the rest of us have to choose, so why shouldn't they?"
* ''Series/DesperateHousewives'':
** [[spoiler:Katherine]] found herself attracted to, and eventually slept with, [[spoiler:the attractive, female stripper Robin]]. This would mean she was most likely bisexual than anything, but everyone, including her, describes her as a lesbian, with the token gay couple flat out stating she can't have gay feelings for a woman because she is straight and there "isn't an on off switch". At no point is bisexuality ever considered, even as a concept.
** Bree's son Andrew, who had been openly gay for many years, returned to Bree's house having gotten engaged to a young woman. Bree is flabbergasted and quickly suspects (correctly) he is marrying the woman for her money. Again at no point is the idea that Andrew might be bi even raised as a possibility--Andrew himself even tries to insist his homosexuality was a phase. Which is strange, because he alludes at being bisexual right after coming out ("I love vanilla ice cream, but once in a while I will be in mood for chocolate). Everyone, including himself, continues using the term gay for the next few seasons, though.
* A StoryArc on ''Series/TheDrewCareyShow'' focused on Carey's [[CitizenshipMarriage citizenship domestic partnership]] to Mr. Wick, and a running gag was the two of them being forced to explain away Playboys, or similar "no, we don't like girls" antics. Admittedly, another attempt to prove they were gay was "owning a bread machine", so it may just be down to the characters being dumb. Ironically, Drew himself could be seen, among other things, [[EvenTheGuysWantHim having sex dreams about George Clooney]].
* Kerry Weaver on ''Series/{{ER}}''. This was briefly addressed in one episode -- Weaver was re-united with her birth mother, but the mother was appalled when she learned of Weaver's sexuality, asking her how she could "choose" to be that way. Weaver said in no blunt terms that she was "alone in her soul" before she realized she was gay, despite a couple of obviously passionate relationships she had had with men before that.
* ''Series/{{Glee}}'' skirts this trope.
** The show had two female high school students that appeared to be bisexual, cheerleaders [[ThoseTwoGirls Brittany and Santana]]. Santana was [[ComingOutStory subsequently revealed]] to be a [[LipstickLesbian lesbian]], and [[TheDitz ditzy]] Brittany identified herself as "fluid" and "bi-curious".
** Blaine, a gay exchange student, becomes confused over his orientation in one episode and is convinced that he is bisexual. His friend [[CampGay Kurt]] dismisses this and claims that gay teenagers call themselves that "when they want to hold hands with [the opposite sex] and feel normal for a change", to which Blaine calls that a double-standard. Despite that, Blaine turns out to be "100% gay" at the end of the episode, which slightly backfires on the entire [[SomeAnvilsNeedToBeDropped anvil drop.]]
*** One of the three series' creators, Ryan Murphy, was [[WordOfGod reported to have apparently stated]] that the decision to make Blaine gay instead of bisexual was because "the [homosexual] kids need to know he's one of them." So, bisexual viewers don't need representation too?
** [[LovableAlphaBitch Quinn]] gets drunk at a wedding and has drunken sex with Santana in a nearby hotel. The two of them never speak of it again afterwards and it spreads around their circle of friends. Possibly because of Quinn [[ChuckCunninghamSyndrome appearing less and less in the series]], there's not one point whether she questions her sexuality (considering she's dated two boys in her grade, one in the grade below and a 30-something university teacher).
* The character of Callie Torres on ''Series/GreysAnatomy'' broadened her sexual horizons when she [[ClosetKey started a relationship with fellow surgeon Erica Hahn]]. After a spell of sexual confusion Callie affirmed that she enjoyed sleeping with both her girlfriend and [[PlatonicLifePartners her male friend Mark]]. She was written as a classic, equal-opportunity bisexual. Subsequently people started to refer to her as exclusively a lesbian, with Erica going so far as to say that "You can't 'kind of' be a lesbian". [[AuthorsSavingThrow They later acknowledged that she was bisexual]], but other characters still have a problem getting it--when threatened by Callie's constant presence in Mark's life, Lexie asked her "How gay are you? On a scale from one to... gay."
* Subverted in ''Series/HappyEndings'' It's stated outright that Jane dated girls in college, [[ExperimentedInCollege but it's portrayed as though she was going through a phase]]. When an ex-girlfriend comes to visit, husband Brad is over the moon because GirlOnGirlIsHot. When its revealed that Jane was actually in love and in a serious relationship with her, it becomes clear that it was more than a phase and Brad becomes insanely jealous.
* While ''Series/{{Hollyoaks}}'' averted this trope with several characters, most notably Kris, during John-Paul and Craig's romance the idea that Craig--who had been involved with several female characters before, seemed to enjoy said relationships, and wanted to stay with his girlfriend Sarah--might be bisexual was mentioned all of once, several weeks after the storyline ended. All that was said on the matter while it was ongoing was:
-->'''John Paul:''' You have sex with men, in my books that makes you gay.
* ''Series/{{House}}'', despite having a bisexual on the character list in the form of Thirteen, invoked this in the episode "The Choice"--the choice for the patient being straight or gay. That there is a third option is brought up in passing a couple times, but not much is made of it; mainly because the character was entirely attracted to men until he decided to get "fixed" at one of those infamous camps, and claims to have become entirely "straight" as a result, although the other characters mostly don't believe him when he says this.
* ''Series/TheLWord'':
** At the end of season 1 Jenny (who earlier in the season was torn between her long-time boyfriend/husband and the first woman she was attracted to) is involved at the same time with both a man and a woman. Both of them are aware of the other and it seems to be shaping up into an interesting poly relationship. However the writers seem to have decided not to pursue the the possibilities of this storyline and Season 2 begins with the guy breaking up with her because she's clearly more interested in women. (Later on, Jenny's sexuality gets complex again when she is dating a {{Transsexual}} man in the process of transitioning.)
** Alice identified as bisexual and dated both men and women up through season 2. After that the writers quietly dropped this and by the end of the series she was identifying as a lesbian.
* Original ''Series/LawAndOrder'' episode "For the Defense". Bernard and Lupo are protecting a female witness who had a relationship with the victim. Rough quote:
-->''*Lupo leaves the room*''\\
'''Witness:''' Does he have a girlfriend?\\
'''Bernard:''' Didn't ''you'' have a girlfriend?
* ''Series/LawAndOrderSpecialVictimsUnit'':
** The episode "Lowdown", where "down-low" (ebonic slang for "man on the side") is described by Tutuola as "closeted black men who have sex 'on the down-low' then go back and pretend to be attracted to their wives." In the entire episode, no variant of the word "bisexual" is used ''once''. Three egregious lines:
-->'''Dr. Huang''': You're not the first woman who's slept with a closeted man. Sexuality is very complicated. Just because he was gay didn't mean he wasn't attracted to you.\\
'''Tutuola''': Guess what? That [mansex] MEANS YOU'RE GAY!\\
'''Andy''': I love you. That's why I couldn't admit who I was... couldn't leave my family... couldn't admit I was gay.
** "Weak". The prime suspect in the serial rape of a number of disabled and mentally ill women is discounted because he appears to be gay. And not as in, "Oh, he has a boyfriend, never mind," but the SVU detectives ''repeatedly saying'', "How can he be the prime suspect? He's ''gay''!"
** "11x13", "P.C.", had [[spoiler:a militant lesbian activist clear her boyfriend's name by coming out and admitting that she's bisexual. Of course, all the people at the meeting act like it's a personal betrayal.]]
* Creator/{{MTV}}'s ''The Real World: DC'' features Mike Manning, who is exploring his attraction to men. Despite dating and making out with other men, he still feels an attraction to women. This is hard for his housemates to understand (they think he's gay, but denying it) and even the guy he dates think he's in denial about being gay. MTV themselves invoked this as well, by editing the episodes to almost exclusively include his interactions with men. [[http://www.afterelton.com/people/2010/02/mikemanning?page=0%2C0 In this article with After Elton]], he comes out as fully bisexual and says he prefers men.
* Michael in ''Series/MyFamily'' came out as gay after ''nine seasons'' of being straight. Bisexuality is never even mentioned.
* ''Series/NipTuck'' seems rather biased against bisexuals at times. Lesbian characters demand for bi-curious women to "pick a side", seeming to think that you can only be one or the other. Many of the people who do show sexual attraction to multiple genders seem to be [[DepravedBisexual psychotic and slightly dangerous]]. On the other hand, Female-Female-Male Threesomes aren't an uncommon feature of the show.
* Men in ''NoahsArc'' are apparently only gay, straight, or closeted (e.g. gay). Even characters who have at least been implied to have had different gender relationships, such as Wade and Guy, are depicted as doing so solely to hide feelings for men or out of a poor understanding of their own sexuality.
* For whatever reason (or none at all), ''Series/QueerAsFolk'' never explored or even mentioned bisexuality. But [[CastFullOfGay everybody's gay]]--except for a few token straight characters. A brief intrigue concluded that if you aren't either completely gay or totally straight, something's wrong with you.
* On ''Series/RescueMe'':
-->"I thought you were gay?!\\
"I dunno man, I miss pussy."
* ''Series/{{Roseanne}}'' had an interesting case with Nancy. She would frequently say things like, "Ugh, I'm sick of women, I'm going back to men this week," and be very blasé about dating both men and women. All arrows point to her being bisexual, but when she came to Roseanne's house with a male date after coming out, Roseanne and her other friends were confused, asking things such as "Well, won't they kick you out of the club for that?" They were more confused than anything.
* In ''Series/{{Scrubs}}'' Turk and J.D. are completely in love with each other (J.D. showed up drunk at Carla's bridal shower crying and rambling about how she would never be as close to Turk as he is), but "in a totally non-sexual way". [[HeterosexualLifePartners It's just guy-love between two guys]].
* Susan from ''Series/{{Seinfeld}}'' briefly becomes a lesbian, seeing at least two women. One of these women leaves Susan for Kramer until being turned off from men by a coat, and the other was an ex of George's who remained infatuated right up until meeting Susan. Susan herself eventually returns to George. Despite the fact that the orientations of these three change at the drop of a hat (or coat), each of them is identified by her immediate status at all times, never as bisexual.
* Despite several seasons of being seen exclusively with men, ''Series/SexAndTheCity'''s Samantha briefly became a lesbian during the show's fourth season...then returned to heterosexuality immediately after. (And lampshaded thereafter, "When I was a lesbian" becoming something of a catchphrase.) Although sometimes straight women do experiment (especially during {{sweeps week|LesbianKiss}} *eyeroll*). On the other hand, Carrie did date a bisexual guy in one episode, but the way it was presented it kinda came off like "oh those young people, what with their wacky bisexuality!".
* ''Series/{{Sherlock}}'':
** Irene Adler, a professional {{dominatrix}} who has both female and male clients but, upon acknowledging her feelings for Sherlock, was quick to clarify that she is, in fact, a lesbian. Where Sherlock is concerned, she merely suffers from a case of IfItsYouItsOkay.
** It's PlayedForLaughs, and we're never given any real cause to believe that he's anything other than heterosexual, but John's response every time someone implies that he and his best friend Sherlock are a couple is: "I'm not gay!" Considering that creator Creator/MarkGatiss once said, "I think a lot of people who say they are bisexual aren't," this is likely intentional.
* ''A Shot at Love'', a reality series based around the concept of having Tila Tequila dating (completely) straight men and (total) lesbians, to, as promos put it, "choose" whether to be straight or gay. There have been several hints that Amanda is bisexual, though it's been entirely for comedy.
* In ''Series/{{Soap}}'', nominally "gay" Jodie (Billy Crystal) seems to have more girlfriends and have sex with more women than most of the straight male cast put together!
* ''The Steve Wilkos Show'', while generally making a point of showcasing the scum of the earth regardless of sexual orientation, sometimes uses this as a way to further demonize some already-skeevy people. A man accused of orally sodomizing his four-year-old niece supposedly admitted to a lie-detector test administrator that he'd had sexual relationships with men in the past, and that he preferred men to women. Despite being in a long-term sexual relationship with a woman at the time, ''everyone'' on the show condemned it as being a further element of his monstrosity. Even Steve chewed him out for not just admitting that he was gay and living an ordinary gay life, because "if you have sex with men, you're gay".
* This is the ''Series/{{Supernatural}}'' fandom's BerserkButton concerning Dean Winchester and his feelings for/relationship with Castiel when he's been said to not be gay. [[RuleOfCautiousEditingJudgment And that's probably all that should be said about that]].
* One of the two jokes used on ''Series/ThreesCompany'' was Jack posing as a gay man so the conservative Mr. Roper (and, later, the moronic Mr. Furley) would allow him to share an apartment with two unmarried women. The possibility of him being bisexual was brought up ''once''...with Jack taking the entire episode to figure out that that would get him kicked out just as quickly as being straight.
* ''Series/WillAndGrace''
** An episode featured Matt Damon as a straight guy trying to pretend he's gay to join the gay men's chorus. When he checks out a woman, Jack says "Holy Anne Heche Laffoon, he's straight!". The possibility that he might be bi is never discussed, though this is more to do with Jack's bigotry than anything.
** Karen, played by openly bisexual Megan Mullally, clearly displays attraction to both men and women, though her precise sexuality is never actually discussed beyond one episode describing it as "a creepy bisexual vibe" by a Character of the Week. Put it down to Karen just being an odd person; the rest of them just roll with it.
* The title character of ''Series/XenaWarriorPrincess'' is often thought to be lesbian because of her love for Gabrielle, despite seeming to enjoy sex and relationships with many men (Ares, Marcus, etc). One might argue the same with Gabrielle.
* In ''Series/{{Girls}}'', Hannah's ex Elijah Krantz is generally portrayed as "having always been gay" despite his attraction to women in the past. He tries to "prove" he is bisexual, and him not enjoying the sex is seen as objective evidence for his homosexuality, ignoring what he identifies as.
* ''Series/{{Castle}}'', more than once. In ''Kill The Messenger'' a male suspect is revealed to have been having sex with a man at one point, and this is treated as unassailable proof that he could not have had sex with a woman.
* Invoked in ''Series/TrueBlood'' when Jessica catches her then-boyfriend James having an affair with Lafayette. She tells Jason about it who instantly assumes he's gay, even though James was clearly in love with Jess and enjoyed having sex with her. She thinks he's "confused" even though he's at least 70 years old (having been turned into a vampire as a young man in the 1960's) and would most likely have a grip on his sexuality by now. She was conveniently blind to the fact that she was a shitty girlfriend, and ''that'' is why he cheated on her; his bisexuality simply made Lafayette a viable option.
* In one episode of ''Series/HowIMetYourMother'', Ted states that he hates a man named Gary Blauman because they were in competition for a girl. Later, Barney's gay brother James reveals he also hates Gary because he cheated on his husband with him and [[NeverMyFault blames him for his divorce]]. Ted immediately (and correctly) deduces that Gary is gay and that the latter was actually fighting with the girl for him. Nobody suggests that having an affair with a man and flirting with a girl are not incompatible.
* {{Downplayed|Trope}} by ''Series/OrangeIsTheNewBlack''. Piper clearly ''is'' bisexual, having an ongoing interest in both her fiancé Larry and her old flame Alex. But not a single character on the entire show seems to consider ''describing'' her as bisexual--not even herself! Perhaps tellingly, most of the characters who call her "straight" are gay, while most of the characters who call her "gay" or "lesbian" are straight. The few people who consider the possibility seem to prefer [[NotUsingTheZWord avoiding labels entirely]].
* ''Series/NCISNewOrleans'': "Rock-a-Bye Baby": The husband of a (male) Navy Commander, Marlin, had an affair with a [[HoneyTrap Chinese spy]], whom he describes as "helping him [[ComingOutStory come out]]" after having previously been living "on the DL" (slang for closeted gay black men). He describes his subsequent life as a "gay father". The idea that he might be bi is not considered.
* ''Series/DanceAcademy'' has Sammy, who has a girlfriend for a while. Due to the fact that his friends dislike Abigail, he tries not to like her either, but fails. He's not talking himself into liking her, he really does. Then he gets a crush on [[spoiler:his roommate Christian]], which causes him to question his sexuality. Then he gets a boyfriend, then kisses Abigail again, then [[spoiler:dies]]. And nowhere is the word "bi" so much as mentioned.
* In the ''Series/RedDwarf'' episode, Duct Soup, Kochansky tries to get Lister's mind off his claustrophobia by talking to him. The conversation eventually steers to her claiming that Lister's friend Todhunter was gay in her dimension. Lister is incredulous, since Todhunter in his dimension was a married man with kids and mistresses. Kochansky says that didn't matter. The fact that Todhunter could have been bisexual wasn't brought up, though the whole thing was almost certainly a fabrication to distract Lister.
[[/folder]]

[[folder:Newspaper Comics]]
* In ''ComicStrip/NineChickweedLane'', Seth spends a large chunk of time trying to coax [[spoiler:Edda's uncle, Roger]] out of the closet, never once considering that [[spoiler:Roger]] might be attracted to men AND love his wife--nope, he's just an extreme closet case who managed to conceive ''eleven children'' (after the second set of twins he was basically stuck). This is made even more egregious later on when Seth continued to [[HaveIMentionedIAmGay assert his gayness]] after [[spoiler:sleeping with diva ballerina, Fernanda]]. The latter is {{Handwave}}ed by [[InformedAttribute an earlier revelation]] that Seth was attracted to "true artistry" and thus was seduced by [[spoiler:Fernanda's dancing skills]]. And after [[spoiler:Edda revealed that, aside from her childhood friend Amos, Seth was the only man she ever loved]], he seemed to be really fighting the urge to sleep with her.
[[/folder]]

[[folder:Theater]]
* In ''Theatre/IfThen'', Liz says "I don't believe in independents. It's like bisexuals. Pick a side." Subverted in that Lucas is unambiguously bisexual, [[AlternateTimeline ending up with a woman in one timeline and a man in another]].
[[/folder]]

[[folder:Video Games]]
* Creator/BioWare usually averts this trope in most of their original settings, since at least one of the potential {{Love Interest}}s in each game is usually bisexual. With ''VideoGame/DragonAgeII'', however, it's the ''fans'' that seem to be invoking the trope in the case of one particular character. A vocal group believes that Anders' sexual orientation is determined by the player character's gender, due to one early conversation. If Hawke is male, Anders reveals that Karl, the mage he was desperately trying to save from [[MindRape becoming Tranquil]] in his initial quest, was not only his lover, but his first. If Hawke is female, that part of the conversation never happens, and Karl's just assumed to be a good friend. Said fans have pointed to this as proof that Anders is gay if Hawke's male, and straight if Hawke's female, with bisexuality completely off the table as a possibility. This, despite despite WordOfGod that EveryoneIsBi, and Anders' own statements to the contrary to male!Hawke:
-->'''Anders''': I've always believed people fall in love with a whole person, not just a body. Why would you shy away from loving someone just because they're like you?
* A strange meta example happens in the ''VideoGame/FireEmblemTellius'' continuity and its male protagonist, Ike. Throughout the first game, he gets a lot of ShipTease with [[EverythingsBetterWithPrincesses Princess Elincia]] and some with his strategist, [[DeadpanSnarker Soren]]. In the sequel, the Ike x Elincia subtext is really watered down to make room for more Ike x Soren subtext. Then ''VideoGame/FireEmblemAwakening'' revealed a character named Priam who refers to himself as Ike's ''descendant''. Cue a BrokenBase and a ''shitload'' of people on the straight and gay sides of the fence trying to "prove" Ike's sexuality one way or the other. Somehow, the prospect of him being bisexual never figured into anybody's head.
* ''VideoGame/{{Persona 4}}'' has the mildly (for a video game) controversial and definitely infamous matter of Kanji's sexuality, which was intentionally left ambiguous by the writers to allow the player to interpret the character as they like. Opinions on this range from "He's gay and insecure about his sexuality" to "He's straight and afraid of being rejected for his domestic hobbies" to "He's a teenager and still discovering himself", due to various lines of dialogue and events, but few, if any, of Kanji's scenes ever present the idea that he may just be bi; the fandom generally treats "He's bisexual" as a compromise to end arguments over the matter, rather than as a legitimate sexual orientation. This is muddled further by the fact that he [[SweetOnPollyOliver has a crush]] on [[{{Bifauxnen}} Naoto]], both before and after the revelation of her gender.
[[/folder]]

[[folder:Web Comics]]
* Parodied in [[http://www.asciiartfarts.com/20020920.html this]] ASCII Art Fart.
-->IF YOU WILLINGLY TOUCH A DICK THEN YOU ARE GAY
* In ''Webcomic/DanAndMabsFurryAdventures'', once Jyrras realizes he's attracted to Abel... that's it, he's gay, no in-betweens allowed, despite previously having had subtext with Lorenda. Granted, Jyrras has shown a tendency towards a binary "Right Answer/Wrong Answer" view of the world and a shaky grasp of relationships in general, so he may think there's only the two options.
* In ''Webcomic/DominicDeegan'', the bisexual Szark, formerly married (non-exclusively) to a woman, suddenly decides he's gay after his HeelFaceTurn, which somehow frees him to be in love with Dominic.
* ''Webcomic/ElGoonishShive'' triggered a massive TV Tropes EditWar over this trope that rages on to this day when two characters appeared to be renouncing their canon bisexuality. Ellen is bisexual, and Grace is effectively so. Some people feel, however, with Ellen choosing to sidestep her attraction to men and Grace's affection generally [[SingleTargetSexuality being limited solely to Tedd]], the two characters are bisexual only in the most literal sense. Others, though, feel that the comic is not an example due to the TF Gun inducing bisexuality in most of its victims, as well as the fact that Ellen and Grace ''have'' been known to express their attraction to men and women respectively, just not often. Ellen [[http://www.egscomics.com/index.php?id=2045 currently identifies]] as a bisexual homoromantic, and TheRant under that strip talks a bit about the situation, with the point that different people have different ideas of what bisexual actually means.
* Addressed in ''Webcomic/FriendlyHostility'' after Bootsie realizes that neither Fox nor Collin wants to "ravish" her because they're dating each other. Fox says that he [[http://www.friendlyhostility.com/d/20041004.html doesn't do labels]], and that calling Collin gay would [[GrumpyBear overload everyone's irony sensors]]. It's a bit of a plot point when Collin, after dating Fox for years, realizes he is, in fact, gay.
* Jamie of ''Webcomic/GirlsWithSlingshots'' is an [[TechnicalVirgin Above The Waist Lesbian]], mostly fooled around with men and then had a same-gender encounter which she came away from ambivalent. She later officially dates another woman and finally did the deed before she left for school, but still insists she's "not in the dictionary".
* ''Webcomic/MenageA3'':
** [=DiDi=] was originally portrayed as coming to realize her bisexuality, and was quick to object when someone refers to a bisexual as "gay". However, after a failed attempt at sex with similarly curious Sandra, Sandra declares herself and [=DiDi=] "two naked straight girls with poor boundary issues". Later on, [=DiDi=] simply becomes desperate for an orgasm and isn't really particular about who gets her there.
** Appears in-universe, when Dillon is surprised to learn that his then-boyfriend Matt is bi, not gay. The comic also includes Gary, a nominally-straight man who is implied to have bisexual tendencies, and Yuki, a nominal lesbian who ''may'' have bisexual tendencies which she represses as a result of, um, "tentacle-related childhood trauma". The comic does a fairly decent job of acknowledging the fluidity of human sexuality without resorting to a polarised form of EveryoneIsBi.
* Discussed in ''Webcomic/SomethingPositive''. Monette came out as a "lesbian" early on but kept having ''([[AnythingThatMoves a lot]])'' of sex with men, [[TheDitz confusing her]]. It wasn't until after starting her long-term relationship with Lisa that she admitted to being bisexual. It's mentioned that many of Lisa's lesbian friends don't really believe in bisexuality, and the bisexual Vanessa once told Peejee about a female ex she'd dumped for saying she'd "get over it".
* Averted in ''Webcomic/{{Niels}}'', in which numerous characters are bisexual. In-universe, however, Duncan believed this as a youth, assumed that his attraction to men meant that he was gay and that his attraction to women was invalid.
* The ''Webcomic/{{Homestuck}}'' fandom zig-zags this trope; on the one hand, [[BizarreAlienBiology trolls]] live in a [[EveryoneIsBi bi normative society]], where exclusive same-or-opposite-gender attractions (like [[LesbianVampire Kanaya]]) are treated more like preferences than sexual orientations ([[WordOfGod Andrew Hussie]] likens it to someone having a preference for blondes over brunettes; hence in human society there are no "blondesexuals"). On the other hand, the ''human'' characters are given this much more often. For example, [[TheHero John]] gets hit with this by slash and het shippers alike, with the former seeing him as "closeted" while the latter point to John's ([[NeverLiveItDown now famous]]) [[HaveIMentionedIAmHeterosexualToday "i'm not a homosexual"]] line as proof that he's straight. While the het shippers obviously have a point, the slash shippers never seem to bring up the idea that he's bi. Played with in [[TheSmartGuy Rose's]] case, she's in a relationship with the aforementioned [[ActionFashionista Kanaya]], had also had ship teases with John, [[TheLancer Dave]] and Meenah, though this being [[DeadpanSnarker Rose]], the sincerity of those flirtations is hard to judge, and her sexuality [[AmbiguouslyBi isn't confirmed]].
* Parodied in the webcomic [[Loserz]], with the openly bisexual Jodie. One strip showed her switching between men and women depending on which gender she was mad at at the moment, meaning she was either straight or gay depending on her mood.
[[/folder]]

[[folder:Web Original]]
* Webvideo/NeedsMoreGay: Rantasmo talks about it with his ''Series/BuffyTheVampireSlayer'' episode, calling the trope by its real life name Bisexual-Erasure.
* An episode of ''Radio/TheRickyGervaisShow'' has Karl telling Ricky and Stephen his idea for a movie plot, which involves a widow starting a sexual relationship with her dead husband's former mistress. Both Ricky and Stephen object to the fact that the mistress who use to be attracted to the husband is now attracted to the widow. No one mentions that she could just be bisexual.
[[/folder]]

[[folder:Western Animation]]
* Stan from ''WesternAnimation/AmericanDad'' has a literal {{Gaydar}} (seen above) with a needle from "gay" to "straight," with a tiny wedge in the center that says "curious". It should be noted, however, that this device doesn't actually work.
* Played with in an episode of ''WesternAnimation/{{Archer}}'' where Cyril's ludicrously attractive ex Lana is threatening to have sex with the entire office to get back at him. Cyril is shocked to find Ray, his openly gay colleague, lining up with the rest of the men (and more than a few of the women), to which Ray replies "[[CampGay Girl, please]]. Nobody's ''that'' gay."
* Stewie in ''WesternAnimation/FamilyGuy'' seems to flip/flop in terms of preference as the joke demands. True to the trope, the b-word is never used. WordOfGod had him listed as gay, despite his obvious attraction to girls (more so then boys even). The writers had dropped more jokes than hints about Stewie's AmbiguouslyGay nature, while simultaneously writing relationship arcs with female characters. Eventually, when Creator/SethMacFarlane was asked about Stewie's sexuality, he outright said that the character preferred "a little of both."
* In ''WesternAnimation/{{Futurama}}'', Fry's grandfather (whose apparent no-exceptions homosexuality temporally threatens Fry's existence) turns a calendar page away from this month's sexy woman so he can peek at next month's sexy man. In the [=DVD=] commentary, Matt Groening asks "Exactly who is this calendar for?", a reference to FridgeLogic that's more fridgy if No Bisexuals are assumed. (Of course, the fact that the event takes place in 1947 does make the calendar's existence strange.)
* In ''WesternAnimation/SouthPark'', Mr./Ms. Garrison becomes a lesbian for one episode. S/he never considers the possibility of being bisexual. But then, Garrison just has generally twisted ideas about sexuality. [[WordOfGod Matt and Trey]] state on their FAQ, when asked what happened after Garrison's lesbianism and second sex change, Garrison [[DepravedBisexual "likes]] [[AnythingThatMoves everybody"]].
* While ''WesternAnimation/TheLegendOfKorra'' averts this with [[spoiler:Korra and Asami]], becoming an OfficialCouple at the end of the GrandFinale after both were previously in a relationship with a man, segments of the fandom played this straight, some declaring that such a relationship is impossible because they're straight, some insisting that they're lesbian. Eventually this was shut down by [[http://bryankonietzko.tumblr.com/post/105916338157/ a blog post]] by one of the show's co-creators, confirming their relationship and referencing the trope.
-->'''Bryan Konietzko''': Despite what you might have heard, bisexual people are real!
[[/folder]]
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