History Main / AnatomicallyImpossibleSex

* Switching from anal sex to vaginal or oral sex: This can actually give the woman a bacterial or fungal infection.

* Weird anatomy: Occasionally seen in hentai, and really common in fanfics written by virgins. This generally involves misplacing body parts or making them connect, stretch, or move in ways impossible in real life. Sometimes done on purpose in SciFi and {{Fantasy}} as ExoticEquipment but otherwise generally a sign of either ArtisticLicense or lack of research.

* "Go fuck yourself!": The euphemism [[ScrewYourself turned literal]].

* All women are born with hymens, and a virgin will always still have theirs. The hymen is ''not'' a piece of organic cling-wrap blocking the uterus. It is a thin layer of tissue inside the ''entrance'' to the vagina that is loosely donut-shaped like the rest of it, just happening to be susceptible to tearing and bleeding (which is not guaranteed), and being so close to the entrance means it can be torn by other means. Sex and even pregnancy with an intact hymen is uncommon, but absolutely possible, so the state of the hymen is not a reliable indicator. And yes, it's rare-but-possible to be born without a hymen.

* Feeling heat in the belly after ejaculation: This experience is different for everyone. Some feel it and like it, some hate it or don't feel it at all. Naturally this variance is ignored in fiction.

* Squirting semen directly into the womb: A staple in hentai. Semen is really ejaculated into the vaginal canal before traveling through the cervix to the uterus.

You would expect the people creating erotica to know how sex works, and yet, the movies often depict things that wouldn't really be enjoyable, should be done differently or are just plain weird. This is usually done on purpose, to conform to what the audience wants to be true. Some of these are perfectly AcceptableBreaksFromReality, since such works caters to [[{{Fetish}} customers' sexual fantasies rather than reality]] and is intended to provide an [[MaleGaze arousing]] [[FemaleGaze display]] of the participants rather than a strictly accurate depiction of the act.

* Female orgasm from penetration alone.
* [[{{Anorgasmia}} The Elusive Orgasm]]: Since the 1990's, it's become a fairly common sex joke in comedies (film, television, whatever the case may be) that a male partner in sex has extreme difficulty giving his female partner an orgasm.
* All gay sex is anal.

* Nothing smells, tastes bad, or is uncomfortable: Anything that would in RealLife is glossed over.

* Mistaken terminology: Many writers don't actually know what names correspond to which body parts. This can lead to weird anatomy as mentioned above. Most of it is a result of badly done sex education classes which result in writers not knowing the proper terms or assuming that everything down there is the same thing.
* Bizarre comparisons: A staple of PurpleProse, this most likely is done for either romantic or erotic reasons.

-->-- '''America''', ''Manga/AxisPowersHetalia'', "Buttsex: The Musical"

* Excessive amounts of bodily fluid (a woman constantly gushing out at the bottom, not just people sweating): There's a limit to how much fluid the human body can produce before becoming dehydrated, which typically heralds the end of an encounter in real life.

* Weird anatomy: Occasionally seen in hentai, and really common in fanfics written by virgins. This generally involves misplacing body parts or making them connect, stretch, or move in ways impossible in real life. Sometimes done on purpose in SciFi and {{Fantasy}} but otherwise generally a sign of either ArtisticLicense or lack of research.

* Excessive amounts of bodily fluid.
* A virgin always bleeds: A very common and very old myth in real life, and thus it's no surprise that it turns up in many works of fiction as well. This perception is so prevalent that [[ConsummationCounterfeit faking it]] is a trope in its own right.
* All women are born with hymens, and a virgin always still has her hymen.