BDSM is a variety of erotic practices involving dominance and submission, role-playing, restraint, and other interpersonal dynamics. Lesbian pornography made for women is usually made by women, and usually features women who identify as lesbian or bisexual. A pearl necklace is a slang term referring to a sexual act in which a man ejaculates semen on or near the neck, chest, or breast of another person. English adopts and uses hentai as a genre of pornography by the commercial sale and marketing of explicit works under this label. Enema pornography involves adults given enemas to others, often fake. Gloryhole pornography features women performing fellatio on unidentified men through a small hole made in a bathroom divider. A large part of the popularity of these videos is seeing how regular gay bear porn and normal the girls are in real-life. The 1979 U. In addition to mainstream pornography, the popularity of facials has led to creation of its own niche market, like video series that specialize in showing the act. Each participant may engage in any type of sex acts with one or both of the others, such as vaginal, anal or oral sex or mutual masturbation. There were also a very limited number of specialist fetish magazines which hentai videos featured images of bondage, such as the famous Bizarre magazine published from 1946 to 1959 by the pioneering fetish photographer John Willie, and ENEG Exotique magazine, published 1956-1959. This is commonly called double anal or double stuffing. Body parts including fingers, tongue and penis may be used for anonymous oral, vaginal and/or anal intercourse. The principal characteristic of voyeurism is that horny milfs the voyeur does not normally interact directly with the subject of his/her interest, who is often unaware of being observed. Guro or Gore is a genre of Japanese pornography involving blood, gore, disfiguration, violence, mutilation, urine, enemas, or feces. Some restrict a policy of panties/nipple tape for females and some allow full nudity with explicit sexual interaction allowed.