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. The anus has a relatively high concentration of nerve endings and can be an erogenous zone, and the receiver may receive pleasure from external anal stimulation. People may engage in anilingus for its own sake, before anal fingering or penetration, or as part of foreplay. Within a BDSM or D/s context, facesitting can be an videos porno gay especially intense form of erotic humiliation. An orgy is a gathering where guests freely engage in open and unrestrained sexual activity or group sex; and a bunga bunga orgy is an orgy in which participants have sex underwater, such as in a swimming pool or a hot tub. 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. Crying pornography that features participating actors crying. In the 1970s, the hardcore pornography genre introduced the stereotypical cumshot scene as a central element of the hardcore film, in which the male actor ejaculates in a way ensuring maximum visibility of the act itself. Mutual masturbation is a sexual act where two or more people stimulate themselves or one another sexually, usually with the hands. As in B/D, the declaration of the Top/Bottom may be required, though sadomasochists may also play without any Power Exchange at all, with both partners equally in control of the play. A sub-set of vaginal fisting attempts lesbian hentai to photograph the female cervix immediately after the fist is removed from the now-gaping vagina. Failure to honor a safeword is considered serious misconduct and could even change the sexual consent situation into a crime, depending on the relevant law, since the bottom has explicitly revoked his or her consent to any actions that follow the use of the safeword . Such explicit sexual interaction is seen only rarely in public big tit milf play spaces, and it is sometimes specifically banned by the rules of a party or playspace.