Barebacking usually refers to a conscious and deliberate choice to forgo condoms. There is, however, no third party camera work involved. Bukkake is a sex act portrayed in pornographic films, in which hentai movies several men ejaculate on a woman, or another man. Women with women Main article: Lesbianism in erotica: Lesbianism in contemporary pornography Lesbian or girl-girl pornography features women engaged in sex together, but is typically aimed at a male audience. The porn industry and viewing public were shocked by the then-taboo spectacle of a white woman having sex with a black man. Mutual masturbation, mutual manual stimulation of the genitals between partners, can be a substitute for sexual penetration. They may regard it as an enhancing element of their sex lives or as their primary form of sexual activity. Diaper pornography involves gay sex video performers wearing diapers, sometimes with an adult performer acting in the role of a caretaker. When the interest in a particular subject is obsessive, the behavior may be described as stalking. When used as an alternative to penile-vaginal penetration, the goal may be to preserve virginity or to prevent pregnancy. Yaoi is anime or manga that features gay males . Other objects such as ball point pens and thermometers are sometimes used, although this practice can lead to injury and/or infection. What seems clear from the historical record is that much of the lesbian material in pornographic texts was intended for a male readership. The term bondage describes the practice of Physical restraining. For momporn 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. The term combines elements of the Freudian psychoanalytic fetish and the Marxist commodity fetish, and is used in the context of British, Spanish and French colonialism and imperialism and their aftereffects. Irrespective of the legal or social view of pornography, it has been used in a number of contexts.