Women with women Main article: Lesbianism in erotica: Lesbianism in contemporary momsex pornography Lesbian or girl-girl pornography features women engaged in sex together, but is typically aimed at a male audience. In Canada, Teletoon offers up its own Teletoon at Night programming block. Bondage pornography specializes in the depiction of sexual bondage or BDSM activities as photographs, stories, movies, or drawings. Some may keep their hand stationary while pumping into it with pelvic thrusts in order to simulate the motions of sexual intercourse. Participants who exert sexual control over their partners are known as dominants or tops while participants who take the passive, receiving, or obedient role are known as submissives or bottoms. For much of the history of cinema and television, lesbianism was considered taboo, though since the 1960s it has increasingly become a genre in its own right. They may regard it as an enhancing element of their sex lives or as their primary form of sexual activity. Pornographic films are typically categorized as either softcore or hardcore pornography. 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. Hamedori is a genre of Japanese pornography in which a male adult video actor or director serves as the camera operator. It is also anime hentai followed by dedicated industry publications and trade groups as well as the mainstream press, private organizations , government agencies, and political organizations. Although there may be no connection videos porno gay between coprophilia and sadomasochism , the limited data on the former comes from studies of the latter. In general, BDSM play is usually structured such that it is possible for the consenting partner to withdraw his or her consent during a scene; for example, by using a safeword that was agreed on in advance. In Japan, point of view pornography is referred to as hamedori .