This is why video stores might consider stocking transgendered subject matter in the straight section, as some straight men will have passive or active sex with another man as long as their partner appears to look like a woman to them, to some minor or major degree. One-sided male nudity can also arise when a male disrobes as part of a male striptease. Some BDSM practitioners prefer a code of behavior that differs from SSC and is described as risk aware consensual kink , indicating a preference for a style in which the individual responsibility of the involved parties is emphasized more strongly, with each participant lesbian hentai being responsible for his or her own well-being. A common way that these are depicted in a single scene is with one woman and two men performing together. Clothed female, naked male is a genre of erotica featuring one or more nude men and one or more clothed women. Pornographic films are generally classified into sub-genres which describe the sexual fantasy which the film and actors attempt to create. In recent years, Japanese films of this genre have become more common in the USA and Europe although it still remains a small, fetish-oriented part of the adult film industry. In addition to mainstream pornography, the popularity of facials has led to creation of its own niche market, like video series that mature milfs specialize in showing the act. Matsuo used amateur actresses in his videos, and he usually traveled to their hometowns for the filming. It explores the more mental aspect of BDSM. Rough sex pornography is similar to pornography featuring sadomasochism, and typically features a Top who humiliates and/or degrades a Bottom while being physically violent towards them. Bestiality pornography involves the sexual attraction of humans to animals. The term is a slang word that originated in the gay community and comes from the equestrian term bareback, which refers to the practice of riding a horse without a saddle. Though the term anal sex most commonly means penile-anal penetration, sources sometimes use the term anal intercourse to refer exclusively to penile-anal penetration, and anal sex to refer to any form of anal sexual activity, especially between videos gays pairings as opposed to anal masturbation.