Animal masturbation has been observed in many species, both in the wild and in captivity. Hentai is the various forms of Japanese pornography, including H-manga, H-anime, and H-computer games. Another variant of reality pornography consists of normal couples that are filmed by professionals, in which case the only obvious distinction from amateur pornography is the higher quality of production, filming and editing. Other possibilities are possible, such as a man having sex with two women who are having sex with each other. Usually that lesbian milfs person prefers to stage the wetting so that his/her legs become soaked with urine. The term soft crush refers to the more common fetish surrounding videos involving inanimate objects or small invertebrates being crushed, while the term hard crush refers to such videos involving larger animals with vertabrae, and arguably more pain-susceptible animals . Bisexual pornography is a genre lesbian hentai of pornography which most typically depicts one woman and two men who all perform sex acts on each other. A variant of A2M is ATOM where a performer inserts his penis directly from one recipient anus into a second recipient mouth. But starting with The World Biggest Gangbang , starring Annabel Chong, the pornographic industry began producing a series of films ostensibly setting gangbang records for most consecutive sex acts by one person in a short period. Internal ejaculations, followed by images of semen dripping from the anus, are sometimes depicted in bareback gaysex gay pornography, where they are referred to by the term breeding or the reverse money shot. In human sexuality, a threesome is sexual activity that involves three people at the same time. A common way that these are depicted in a single scene is with one woman and two men performing together. The related term twinkle-toes, which implies that a man is effeminate, tends to be used in a derogatory manner. Bisexual DVDs sell much better online than in adult video stores, possibly due to customers in stores feeling embarrassed to buy them.