To gay anime tea bag is a slang term for the sexual act of a man placing his scrotum in the mouth of a willing sexual partner for pleasure or onto the face or head of another person. It may be used as foreplay, or as an alternative to sexual penetration. Going back at least as far as the Christy twins in the 1970s, depictions of incest and particularly incest between twins has been a feature of gay pornography. A common way that these are depicted in a single scene is with one woman and two men performing together. Guro or Gore is a genre of Japanese pornography involving blood, gore, disfiguration, violence, mutilation, urine, enemas, or feces. English adopts and uses hentai as a genre of pornography by the commercial sale and gay fuck marketing of explicit works under this label. See Gay-for-pay. Hentai is the various forms of Japanese pornography, including H-manga, H-anime, and celeb news H-computer games. Buck Angel is the best-known momporn actor in this genre. Generally, interest differs between people, and gender depends on sexual orientation. Watersports pornography features sexual gay male sex activities involving urine, hentai sex such as golden showers. First found in softcore movies and erotic thrillers, depictions of lesbianism entered mainstream cinema in the celebrity porn 1980s. The principal characteristic of voyeurism is that the voyeur does not normally interact directly with the subject of his/her interest, who is often unaware of being observed. Squirt pornography involves women ejaculating. Babysitter pornography features usually teenage girls being exploited and having taboo sex with older, male employers. The sub-genres usually conform to certain conventions, and each may appeal to a particular audience. The term lesbian is also used with regard to sexual identity or sexual behavior, regardless of sexual orientation, or as an adjective to characterize or associate nouns with female homosexuality or same-sex attraction. Ethnic pornography is a genre of pornography that features performers of specific ethnic groups, or depictions of interracial sexual activity.