Snuff pornography involves the actual death of any of the participants, consenting or otherwise, simulated death is not considered snuff. A survey by the New York City Department of Health and Mental Hygiene found that heterosexual women are more likely to bareback when engaging in anal sex than homosexual and bisexual men. Because the viewing of such films carried a social stigma, they were viewed at brothels, adult movie theaters, stag parties, at home, in private clubs and also at night cinemas. Pegging is a sexual practice in which a woman performs anal sex on a man by penetrating the gay twinks man anus with a strap-on dildo. Many men who like trans partners of any variety, known as tranny chasers, do not necessarily identify as gay themselves. Transgender pornography features performers who cross-dress for sexual gratification, either for themselves or for their partners. Generally, interest differs 3d hentai between people, and gender depends on sexual orientation. BDSM is a variety of erotic practices involving dominance nude milfs and submission, role-playing, restraint, and other interpersonal dynamics. There is no singular or archetypical behavior; therefore, a wide range of thought patterns and behaviors exist, but all tends to be a harmless and efficacious release from some kind of pressure. Originating in Japan in the 1980s, the genre subsequently spread to North America and Europe, and crossed over into gay pornography. Usually that person prefers to stage the wetting so that his/her legs become soaked with urine. Another variant of reality pornography consists of normal couples that are filmed by professionals, in which case the only obvious distinction from amateur pornography is the higher quality of production, filming and editing. 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. If this is done using penises and/or strap-on dildos, this is sometimes called the sandwich or BigMac. Although pornography has usually focused on heterosexuality, due to the prevalence of the heterosexual orientation, explicit gay material has a long history as well, which reaches back to Greek antiquity, if not to prehistory.