The consent and compliance for a sadomasochistic situation can be granted only by people who can judge the potential results. Originating in Japan in the 1980s, the genre subsequently spread gay hentai to North America and Europe, and crossed over into gay pornography. It is used, for example, at fertility clinics to stimulate sperm donors. In modern BDSM vernacular, the queening stool allows open access to the crotch while seated. BDSM communities generally welcome anyone with a non-normative streak who identifies with the community; this may include cross-dressers, extreme body mod enthusiasts, animal players, latex or rubber aficionados, and others. Transgender pornography features performers who cross-dress for sexual gratification, either for themselves or for their partners. Dwarfs or midget pornography features performers who are gay sex video dwarfs/midgets. Kinbaku means tight binding Kinbaku-bi which literally means the beauty of tight binding. People may engage in anilingus for its own sake, before anal fingering or penetration, or as part of foreplay. A crush fetish is a fetish in which one is sexually aroused usually when someone crushes objects, food, and sometimes small animals with their body, usually under their foot, or when crushed oneself. Real enema shots or videos of true medical situations may violate privacy laws in some countries. It is sometimes described as a sexual fantasy, by women or men, depicting an exhibitionist or physique worship scenario. There has been an increase in discussion and portrayal of masturbation in art, popular music, television, films, and literature. Heterosexual bareback sex, milf fuck as opposed to sex with condoms, not only poses an increased risk of STIs, but for pregnancy as well. A variation on this is to place the fingers and thumb on the penis as if playing a flute, and then shuttle them back and forth. The original definition of dogging – and which is still a closely related activity – is spying on couples having sex in a car or other public place.