Watersports pornography features sexual activities involving anime hentai urine, such as golden showers. Arousal may be triggered by seeing the body movements or facial expressions of that person. The first pegging scene appears to have been in the non-pornographic 1970 film Myra Breckinridge, based on the novel of the same name by Gore Vidal, although it was not explicit. As with most forms of sexual activity, anal sex participants risk contracting sexually transmitted infections . Along with the penis, the scrotum is sensitive and considered to be an erogenous zone. Fisting may be performed with or without a partner. When sexual activity is centered on one of the threesome, then the activity may be described as a gang bang of the person. The first film was released in 1980 starring Kay Parker. In some societies, the terms fox, plum, chick, or chicken milf fuck are preferred. Actors are mostly amateur; any well-known actors in bisexual porn tend to be from the gay pornography industry. Some BDSM practitioners prefer a code of behavior that differs from SSC and is described as risk aware consensual kink , indicating a preference for a style in which the individual responsibility of the involved parties is emphasized more strongly, with each participant being responsible for his or her own well-being. Bukkake videos are a gay boy porn relatively prevalent niche in contemporary pornographic films. One-sided male nudity can also arise when a male disrobes as part of a male striptease. Bobbi S. Anal sex or anal intercourse is generally the insertion and thrusting of the erect penis into a person anus, or anus and rectum, for sexual pleasure. Ethnic pornography is a genre of pornography that features performers of specific ethnic groups, or depictions of interracial sexual activity. Foot fetishism, foot partialism, foot worship, or podophilia is a pronounced sexual interest in feet. Freud, however, considered such extensions of sexual interest to fall within the range of the normal, unless marked out by exclusivity .