The consent and compliance for a sadomasochistic situation can be granted only by people who can judge the potential results. Saliva pornography involves salivation and saliva. As of 2013, little analysis of this paraphilia has been reported in medical literature. Reality pornography is professionally made porn which seeks to emulate the style of amateur pornography. The phrase mature milfs is commonly found on porn sites. Softcore gay pornography also exists; it at one time constituted the genre, and may be produced as beefcake pornography for heterosexual female and homosexual male consumption. Currently, animated television series aimed at adults hentai sex are some of the most popular and critically acclaimed forms of entertainment. A homosexual threesome would involve either three men or three women. The term discipline describes psychological restraining, with the use of rules and punishment to control overt behavior. Other possibilities are possible, such as a man having sex with two women who are having sex with each other. 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. Starting with erotic stories and woodblock prints from before the 20th century, Japanese pornography evolved into distinct subcategories with the media that in addition of pornographic videos and magazines featuring live actors, there is exist categories of pornographic manga , pornographic computer games , and pornographic anime . Women porn is often produced by women and aimed specifically at the female market - rejecting the view that men are turned on by porn but women only by a box of chocolates. Hentai is the various forms of Japanese pornography, including H-manga, H-anime, and H-computer games. Examples include the Girls Gone Wild and Girls Who Like Girls Series. Real enema shots or videos of true medical situations may violate privacy laws in some countries. By Japanese law, the genitals of actors and actresses must be censored and up the mid-1990 so was the depiction of pubic hair.