By Japanese law, the genitals of actors and actresses must be censored and up the mid-1990 so was the depiction of pubic hair. This category also includes pornographic home movies. Watersports pornography features sexual activities involving urine, such as golden showers. Bottom and submissive are widely recognized terms for those partner in the relationship or activity who are, respectively, the physically receptive or controlled participants. This style of filming is in contrast to having a separate, third-person camera crew filming all the action. As with most forms of sexual activity, anal sex participants risk contracting sexually transmitted infections . A variant of A2M is ATOM where a performer inserts his penis directly from one recipient anus into a second recipient mouth. The phrase is commonly found on porn sites. There may be more than two participants; both group sex and gang banging can be included. It may involve sexual attraction to women who are pregnant or appear pregnant, attraction to lactation, or attraction to particular stages of pregnancy such as impregnation or childbirth. Some techniques which may work for one individual can be difficult or uncomfortable for another. Bobbi big tit milf S. BDSM actions can often take place during a specific period of time agreed to by both parties, referred to as play, a scene or a session. Tentacle rape or shokushu goukan is found in some horror or hentai titles, with tentacled creatures having sexual intercourse with female characters. Hentai is the various forms of Japanese hentai sex pornography, including H-manga, H-anime, and H-computer games. Targets the male audience, but is much less popular than Yaoi. Fantasies of group sex are extremely common among both men and women, and group sex is a subgenre in pornographic films. 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 videos porno gay for his or her own well-being.