These styles are much closer to the style of bondage scenes in mainstream television. As a form of non-penetrative lesbian milfs sex, it can be done for its own enjoyment or as foreplay. Some may keep their hand stationary while pumping into it with pelvic thrusts in order to simulate the motions of sexual intercourse. Typically featured are hitting, gay hentai choking, name-calling and hair-pulling. Interactive pornography, available in CD-ROM and DVD format, allows the viewer to select the particular acts performed at any one time, sometimes with the camera providing a first person view. Solo performances in gay pornography have been described in 1985 as either or both active and/or passive , whereas female solo performances are said to be exclusively passive . Group sex most commonly takes place in a private sex party or semi-public swinger gathering, but may also take place at massage parlors or brothels or, in some jurisdictions, at purpose-built locations such as sex clubs. Bondage pornography specializes in the depiction of sexual bondage or BDSM activities as photographs, gay bear porn stories, movies, or drawings. The term is typically used by the cinematographer within the narrative framework of a pornographic film, and since the 1970s has become a leitmotif of the hardcore genre. They may be noted for using risqué themes, graphic violence, sexuality or black comedy in a manner that is unsuitable for younger audiences. Common positions include lying on back or face down, sitting, squatting, kneeling or standing. Portrayals of lesbians in the media suggest that society at large has been simultaneously intrigued and threatened by women who challenge feminine gender roles, and fascinated and appalled with women who are romantically involved with other women. Lying face down on a comfortable surface such as a mattress or pillow, the penis can be rubbed against it. If dramatic skills are not involved, a performer in a porn film may also be called a model. Two women tapegagged and cuffed to iron bars Bondage and Discipline are two aspects of BDSM that do not seem to relate to each other because of the type of activities involved, but they have conceptual similarities, and that is why they appear jointly.