Bareback sex is physical sexual activity, especially sexual penetration, without the use of a condom. Group sex is sexual behavior involving more than two participants. Since at least 1973, it has also been used to refer to a sexually attractive young woman. A pearl necklace is a slang term referring to a sexual act in which a man ejaculates semen on or near the neck, chest, or breast of another person. These scenes videos gays may involve the female actor calling for the shot to be directed at some specific part of her body. A few extremely flexible males can reach and stimulate their penis with their tongue or lips, and so perform autofellatio. Men may find stimulation of the anus, rectum, and adjacent organs enjoyable. Heterosexual bareback sex, as opposed to sex with condoms, not only poses an increased risk of STIs, but for pregnancy as well. The person receiving anilingus is regarded as the passive partner in the act, and the person performing anilingus is the active partner. For legal reasons, the vast majority of so-called reality porn involves professional actors and actresses posing as so-called amateurs. The term applies to the depiction of the act rather than the act itself, and so does not include live exhibitions like sex shows and striptease. Softcore gay pornography also exists; it at one time constituted the genre, and may be produced as beefcake pornography for heterosexual female and homosexual male consumption. Bottom and submissive are widely recognized terms for those partner in 3d hentai the relationship or activity who are, respectively, the physically receptive or controlled participants. Pornography may be presented in a variety of media, including books, magazines, postcards, photographs, sculpture, drawing, painting, animation, sound recording, film, video, and video games. Both forms of pornography momporn generally contains nudity. Entacle erotica describes a type of pornography most commonly found in Japan which integrates traditional pornography with elements of bestiality and a fantasy, horror, or science-fiction theme.