If dramatic skills are not involved, a performer in a porn film may also be called a model. Reality pornography is professionally made porn which seeks to emulate the style of amateur pornography. Foot fetishism has been defined as a pronounced sexual interest in the feet or footwear. The strategies and tactics that are used to smuggle one of the couple into and out of the toilet undetected are as important or almost as important as the urination. Some straight actors have started acting in gay porn only to be accused of being gay while others first step was to strictly do solo scenes. Rainbow parties were covered on The Oprah Winfrey Show in 2003, and became the subject of a juvenile novel called Rainbow Party. Some may keep their hand stationary while pumping into it with pelvic thrusts in order to simulate the motions of sexual intercourse. There mature milfs has been an increase in discussion and portrayal of masturbation in art, popular music, television, films, hentai porn and literature. Likewise, Fox Broadcasting Company has also dedicated an entire evening programming block to adult animation programs, known as Animation Domination. A sex party is a gathering at which sexual activity takes place. Jerk off instruction features a performer encouraging or instructing the viewer to masturbate, often culminating in a countdown at the end of which the viewer is invited to induce orgasm. John Stagliano is considered to have started the gonzo pornography genre with his Buttman series of films. 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 . Clothes wetting: The gay boy porn person is sexually aroused by wetting one clothing or observing another person doing so. Pornography is often distinguished from erotica, which consists of the portrayal of sexuality with high-art aspirations, focusing also on feelings and emotions, while pornography involves the depiction of acts in a sensational manner, with the entire focus on the physical act, so as to arouse quick intense reactions.