As a result, little in history was documented to give an accurate description of how female homosexuality is expressed. By Japanese law, the genitals of actors and actresses must be censored and up mature milfs the mid-1990 so was the depiction of pubic hair. Participants usually derive pleasure from this, even though many of the practices—such as inflicting pain or humiliation or being restrained—would be unpleasant under other circumstances. Transsexual porn star Wendy Williams has stated videos gays that transsexual Porn is classified as Straight Specialty. It is suggested that much of the obscurity and the uncertainties about female ejaculation are related to mixing up these two phenomena. It is sometimes combined with BDSM features. Female dominance refers to BDSM relationships and BDSM scenes in which the dominant partner is female. Lesbianism has been a theme in erotic art since at least the time of ancient Rome, and many regard depictions of lesbianism to be erotic. The name of the practice, when it is done in a repeated in-and-out motion, is derived from its passing resemblance to the dipping of a tea bag into a cup of hot water as a method of brewing tea. The genres of pornography are based on the type of activity featured and the category of participants, hentai videos for example mateur pornography is a category of pornography that features models, actors or non-professionals performing without pay, or actors for whom this material is their only paid modeling work. Hentai is the various forms of Japanese pornography, including H-manga, H-anime, and H-computer games. Entacle erotica describes a type of pornography most commonly found in Japan which integrates traditional pornography with elements of bestiality and a fantasy, horror, or science-fiction theme. Usually that person prefers to stage the wetting so that his/her legs become soaked with urine. Advocates of RACK argue that SSC can hamper discussion of risk because no activity is truly safe, and that discussion of even low-risk possibilities is necessary for truly informed consent.