As with most forms of sexual activity, anal sex participants risk contracting sexually transmitted infections . This may relate to fetishes such as voyeurism or cuckolding. The work of Bruce Seven has been called reality porn, due to his lack of using scripts and asking his performers to act naturally in their own character. The sub-genres usually conform to certain conventions, and each may appeal to a particular audience. 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. However the genre remains a very small proportion hentai videos of the pornographic DVD gay fuck market; for example at porn retailer HotMovies. BDSM actions can often take place during a specific period of time agreed to by both parties, referred to as play, a scene or a session. If ejaculation is onto the other person face it can be called a facial. Unlike erotic films, pornographic films contain explicit sexuality and do not claim any artistic merit. Related genres include: Amateur pornography originally referred only to pornography produced by amateurs but now also includes professionally made pornography designed to appear as if it were amateur. Women porn is often produced by women and aimed specifically at the female market - rejecting the view that men are turned on by porn but women only by a box of chocolates. A facial is a form of non-penetrative sex, though it is generally performed after some other means of sexual stimulation, such as vaginal sex, anal sex, oral sex or masturbation. Insertion in pornography features women inserting various odd objects into their anus or vaginas. Generally, interest differs between people, and gender depends on sexual orientation. It is commonly depicted in pornography, but very rarely gay fuck celeb news in mainstream cinema. The buttocks in human females thus contain more adipose tissue than in males, big tit milf especially after puberty. Originating in Japan in the 1980s, the genre subsequently spread to North America and Europe, and crossed over into gay Gay Porn pornography.