The term is a slang word that originated in the gay community and comes from the equestrian term bareback, which refers to the practice of riding a horse without a saddle. Snuff pornography involves the actual death of any of the participants, consenting or otherwise, simulated death is not considered snuff. In human sexuality, a threesome is sexual activity that involves three people at the same time. Tentacle rape or shokushu goukan is found in porn milf some horror or hentai titles, with tentacled creatures having sexual intercourse with female characters. Facial cum shots are currently regularly portrayed in pornographic films and videos, often as a way to close a scene. The term discipline describes psychological restraining, with the use of rules and punishment to control overt behavior. Reality pornography is professionally made porn which seeks to emulate the style hentai videos of amateur pornography. The related term twinkle-toes, which implies that a man is effeminate, tends to be used in a derogatory manner. Ass to mouth pornography shows the transfer of a performer penis from a second performer anus to that same second performer mouth in a single shot. Pornography is often referred to as porn and a pornographic work as a porno. Actual upskirt or downblouse shots may violate gay fuck privacy laws in some countries. There may be more than two participants; both group sex and gang banging can be included. Related genres include: Amateur pornography originally referred only to pornography produced by amateurs but now also includes professionally made pornography designed to appear as if it were amateur. The stigma of being gay or labeled as such has steadily eroded since the Stonewall riots began the modern American gay rights movement in 1969. Sex parties may be organized to enable people to engage in casual sexual activity or for swinging couples or people interested in group sex to meet, but any gathering where sexual activity is anticipated can be called a sex party. The term soft crush refers to the more common fetish surrounding videos involving inanimate objects or small invertebrates being crushed, while the term hard crush refers to such videos involving larger animals with vertabrae, and arguably more pain-susceptible animals .