Basic Trope: There are only heterosexual and homosexual people, no bisexuals.
- Straight:
- There are no bisexual people in the world.
- In-universe sexual orientations are only limited to heterosexuality and homosexuality, so if Alice who used to go out with men starts dating women, everyone assumes that she came out of the closet and becomes a lesbian, without considering bisexuality as an option .
- Exaggerated:
- Bisexuality is an absolute taboo in the setting and mentioning it is punishable by death.
- Alice constantly has relationships with people of both genders, but she is never said to be bisexual. They limit themselves to saying that she is straight when she goes out with men, and homosexual when she goes out with other women.
- All Gay men and Straight women are completely misogynists, and all Straight men and lesbians are completely misandrists, so it's impossible to attract anyone outside their sexual orientations.
- Alice has been in many relationships with men, yet the second she kisses one woman, people assume she's a lesbian from that point onwards (and every ex-boyfriend of hers wonders if she was gay the whole time and that she never loved any of them).
- Alice is in a long-term relationship with someone both before and after their transition. People think that her partner transitioning changed Alice from a straight woman to a lesbian or vice-versa, despite Alice not caring about her partner's gender one bit.
- Alice is in a relationship with a non-binary and/or intersex person, and people STILL refuse to believe she could be anything other than gay or straight.
- Downplayed:
- There are no bisexual people in the city, but they exist in other places.
- But Not Too Bi.
- There are either no bisexual men or women, but bisexual people of other gender exist.
- Bisexual characters with minor roles exist, but they're all The Ghost.
- Justified:
- All of the characters are aliens of an One-Gender Race.
- The show is set at a time where bisexuality was intrisically tied to swingers' club, nymphomania, the spreading of STD's, mental instability, and perversion thus the public views bisexuals with suspicion at best and disgust at worst.
- The show has no confirmed sexualities at all in the cast, since the subject has absolutely nothing to do with sex and/or relationships.
- When Alice dated both men and women, she was just experimenting and still not sure about her sexuality, but she ended up focusing on one gender.
- Inverted:
- Everyone Is Bi.
- There are no asexuals.
- Subverted: One person is bisexual...
- Double Subverted: ...but later finds out that they are straight or homosexual...
- Parodied:
- Every bisexual person on Earth was shoved onto a spaceship and sent to the Moon.
- Alice has lots of sex with both men and women, and yet people just think she is lesbian despite obvious evidence to the contrary.
- Zig Zagged: ...but another person turns out to be bisexual instead.
- Averted:
- Bisexual people exist in average amounts.
- No Hugging, No Kissing
- Enforced:
- The writers don't believe that bisexual people exist in real life.
- The programmers feel that programming bisexual behavior for characters is too complicated, so they just stick to heterosexual and homosexual characters.
- Lampshaded:
- "Isn't it weird that no one ever likes both guys and gals?"
- "One day or another, you will have to grow up and choose which you prefer, if only for the fact that your life partner will either be male or female. You can't have it all."
- Invoked: Bisexuality isn't recognized as part of the gender spectrum in-universe at all but homosexuals and lesbians are recognized to exist.
- Exploited: Jenny the Alpha Bitch labels Alice the bisexual main character a "liar" because she's dating a boy now but she has evidence that Alice dated a girl in her previous high school — so she has to be closeted, right?
- Defied:
- The villain targets everyone except bisexual people.
- "Look, I know it's easier for you to believe sexuality is set in stone but, news flash, bisexuals are the most numerous demographic among LGBT people around the world, even before gays and lesbians."
- Discussed: "Is bisexuality actually a thing?" "Sure is. Humans aren't a mathematical formula you know. Even when it comes to sex."
- Conversed: "Why aren't there any bisexuals on this show? Given how many gay characters there are, it's unrealistic."
- Deconstructed: Because nobody believes bisexuality exists and because even homosexuals and lesbians reject anyone who labels themselves as "bi", bisexuals must live a very discreet life if they want to avoid being outed as "two-timers" and as "homewreckers".
- Reconstructed: Bisexuality is eventually recognized for what it is and bisexuals no longer have to fear ostracization or public humiliation for their alternative lifestyle.
- Implied: "She had a boyfriend at one point, but later I guess she must have discovered she was a lesbian."
- Played For Laughs: One night at a campfire, the characters tell them about the ancient legend of the bisexuals who are rumored to exist on this very planet... But they dismiss it as nonsense.
- Played For Drama: Because bisexuality is considered even more taboo than homosexuality, the bisexuals of the setting have to keep their sexuality a secret or to swear it off altogether, which leads to many of them growing frustrated and miserable.
- Played For Horror: People from all the rest of the LGTBIQ+ spectrum band together with the bigoted "straights" to pursue and annihilate bisexuals, labeling them "traitors" and generally performing every atrocity ever done to non-heterosexual people in real life without seeing the hypocrisy because "they are not like us".
You can look into the main page if you want, but I guarantee you this: there are No Bisexuals around there either.
