In the attempts of circumvent this type of censoring , actors and producers have featured subject matter unseen or rarely depicted in western pornography. The Japanese sex industry uses the term Paizuri . Initially, few animation studios in the United States attempted to produce animation for adult audiences, but later examples of animation produced for adults would gain mainstream attention and success. Asian fetish is a slang term which usually refers to an interest, strong attraction or preference for people, culture, or things of Asian origin by those of non-Asian descent. Bodily functions horny milfs Menstrual or red rhapsody pornography features videos porno gay sexual activities involving women who are menstruating, with a focus on the menstrual blood. Bondage is usually, but not always, a sexual practice. However, most practice their diaper fantasies in a way that would probably not be noticed by passersby on the street. Smoking fetish involves performers smoking cigarettes, cigars, joints, and/or blunts. Bestiality pornography involves the sexual attraction of humans to animals. BDSM has become an umbrella term for certain kinds of erotic behavior between consenting adults. Wetlook pornography involves clothed wet persons. Making a pearl necklace is one of the activities that sex workers use as safe sex alternatives for people who refuse to wear condoms. This scene dynamic may be referred to as consensual nonconsent. Challenged on two fronts – by anti-pornography feminists and by the traditional male double-standard – sex-positive feminists would sometimes seek for tactical reasons to distinguish erotica from porn - with the latter conventionally seen as both boring and disturbing. A glory hole is a hole in a wall, or other partition, often between public lavatory stalls or adult video arcade booths for gay hentai people to engage in sexual activity or observe the person in the next cubicle while one or both parties masturbate. Studies indicate that anilingus is a rare sexual practice between women.