Barebacking usually refers to a conscious and deliberate choice to forgo condoms. Foot fetish pornography features heavy emphasis on the feet of the participants, either in combination with kissing and genital sex or in the context of acts such as trampling or crush fetishism. Terminology for roles varies widely within the various BDSM subcultures. Starting with erotic stories and woodblock prints from before the 20th century, Japanese pornography evolved into distinct subcategories with the media that in addition of pornographic videos and magazines featuring live actors, there is exist categories of pornographic manga , pornographic computer games , and pornographic gaysex anime . Sigmund Freud considered foot binding as a form of fetishism. This is commonly called double vaginal penetration or double stuffing. Sub-genres can also be classified into the characteristics of the performers or the type of sexual activity on which it concentrates, and not necessarily on the market to which each sub-genre appeals. 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 . Double Stuffed , Double Vaginal , or Double Anal pornography involves the penetration of one orifice by two penises or other objects. Pornography may fall into more than one genre. Its gain in prominence has been attributed to its depiction in the film Pecker, which was released in 1998. Other fetish Bareback pornography features performers who are not wearing condoms. The act may be carried out face to face, or head to tail, with the woman recommended to be on top if she has smaller breasts. Sometimes one or more fingers may be inserted into the vagina to stroke its frontal wall where the G-spot may be milf xxx located. In academic discourse, racial fetishism is a postcolonialist term found in the writings of authors such as Homi K. Bukkake pornography involves a performer, usually female, onto whom 3d hentai several men or women ejaculate, usually on the face.