Group sex also occurs in populations of non-human animals such as bonobo apes and chimpanzees. Medical pornography involves sexualized medical, often fake, including gynecological pelvic examinations, rectal examinations, and pelvic or gynecological ultrasounds. The mouth was the most common area to be ejaculated upon. Pantyhose/Tights/Stockings pornography involves women or men dressed in hentai sex pantyhose, tights, or stockings. Studies among BDSM practitioners in the US have shown that about half nude milfs of all men find the idea of bondage to be erotic; many women do as well. Reading or viewing pornography, sexual fantasy or other erotic stimuli may lead to a desire for sexual release such as by masturbation. Works in this genre may be considered adult for any number of reasons. Gonzo pornography is a style of pornographic film that attempts to place the viewer directly into the scene. There are varieties of definition and geographical data presented by organizations and individuals for classifying the Asian people. Creampie, also known as internal cum shot, and, in homosexual contexts, also known as breeding and seeding, is a slang term used in pornography to describe when a male ejaculates inside his partner vagina or anus. Boots are seen as the perhaps most fetishistic of all footwear and boots may be the most popular fetish clothing attire. Reality and voyeur pornography, animated videos, and legally prohibited acts also influence the classification of pornography. Cartoon pornography is the portrayal of illustrated or animated fictional characters in erotic or sexual situations. Its gain in prominence has been attributed to its depiction in the film Pecker, which was released in 1998. Following the introduction of the Motion Picture Association of America film rating system, independent animation producers attempted to establish an alternative to mainstream animation. As the prostate is touch-sensitive, some directly stimulate it using a well-lubricated finger or dildo inserted through gay twinks the anus into the rectum.
