BDSM best mobile porn communities generally welcome anyone with a non-normative streak who identifies with the community; this may include cross-dressers, extreme body mod enthusiasts, animal players, latex or rubber aficionados, and others. Animal masturbation has been observed in many species, both in the wild and in captivity. People may engage in anilingus for its own sake, before anal fingering or penetration, or as part of foreplay. This stop and go build-up, known as edging, can achieve even stronger orgasms. These scenes hentai sex may involve the female actor calling for the shot to be directed at some specific part of her body. Group sex is sexual behavior involving more than porn milf two participants. Originating in Japan in the 1980s, the genre subsequently spread to North America and Europe, and crossed over into adult anime gay pornography. Each participant may engage in any type of sex acts with one or both of the others, such as vaginal, anal or oral sex or mutual masturbation. As of 2013, little analysis of this paraphilia has been reported in medical literature. Pornographic films present sexual fantasies and usually include erotically stimulating material such as nudity. English adopts and uses hentai as a genre of pornography by the commercial sale and marketing of explicit works under this label. In addition to mainstream pornography, the popularity of facials has led to creation of its own niche market, like video series that specialize in showing the act. Examples include the Girls Gone Wild and Girls Who Like Girls Series. Lucky Pierre is slang for a person performing both receptive and insertive anal and/or vaginal sex simultaneously during a threesome, being positioned between the two partners. The reverse of this, in which nude women interact with clothed men, is called Clothed male, naked female . Facial cum shots are currently regularly portrayed in pornographic films and videos, often as a way to close a scene. Examples of heterosexual pornographic film series featuring hot gay sex creampies include Cream Filled Teens and Internal Cumbustion.