A celebrity sex tape is typically an amateur pornographic video recording involving one or more celebrity famous person which has, intentionally or unintentionally, been made available publicly. Contrary to the other two types, B/D does not define the Tops and Bottoms itself, and is used to describe the general activities with either partner being the receiver and the giver. Those with diaper-related paraphilias differ widely in their focus of attention. Group sex also occurs in populations of non-human animals such as bonobo apes and chimpanzees. The term has also applied to other professions and even companies trying to appeal to a gay demographic. A person may be sexually penetrated multiple times simultaneously. A threesome is also depicted gay twink porn with one woman and two men who all perform sex acts on each other . Crush pornography features objects being crushed by an actress or actor, who generally plays an overtly dominant role. Being forced to wear diapers porn milf as a form of humiliation is sometimes a behavior encountered in sexual masochism. Threesome or 3some pornography features one man and two women . Many of these activities might be based on rape. Some aspects of the research community distinguish between female ejaculation and what is colloquially known as squirting or gushing. Patricia Hill Collins, an African-American writer, theorizes that this is derived from a stereotype that those of black descent are promiscuous, and their buttocks are objectified by porn as a result. 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. The cover is open while the submissive lies down on his back and places his head in the box. 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 hentai movies of pornography, as well as couples more commonly making their own tapes due to the prevalence of video cameras.