In the West, masturbation in private or with a partner is generally considered a normal and healthy part of sexual enjoyment. As a form of non-penetrative sex, it can be done for its own enjoyment or as foreplay. Additionally, the buttocks give an indication of the shape and size of the pelvis, which impacts reproductive capability. The current public acceptance of celebrities with sex tapes is speculated by Joe Levy, executive editor of Rolling Stone, to be due to the easy availability of pornography, as well as couples more commonly making their own tapes due to the prevalence of video cameras. This type of pornography is almost exclusively hentai, as true hermaphroditic humans are not fertile and are not usually found in nature. Shotacon : Similar to Lolicon, this genre involves prepubescent or under-aged boys between the ages 6–12. Rubber pornography involves rubber, latex, and similar materials. Some aspects of the research community distinguish between female ejaculation and what is colloquially known as squirting hentai porn or gushing. The primary subjects of pornographic depictions are pornographic models, who pose for still photographs, and pornographic actors or porn stars, who perform in pornographic films. The resulting consent and understanding is occasionally summarized in a written contract, which is an agreement of what can and cannot take place. Lying face down one may use the hands, one may straddle a pillow, the corner or edge of the bed, a partner leg or some scrunched-up clothing and hump the vulva and clitoris against it. In Japan, point of view pornography is referred to as gay fuck hamedori . Behind the Green Door was one of the first pornographic films to feature sex between a white actress with a black actor . A celebrity can fight the release in court to maintain momsex deniability while still enjoying the career benefits. It may occur more frequently in private situations, such as spontaneous sexual activity among three friends, or arranged in a community of like-minded swingers or planned as a once-only experience; and rarely in anonymous settings, such as at orgies or other sex parties.
