The term lesbian is also used with regard to sexual identity or sexual behavior, regardless of sexual orientation, or as an adjective to characterize or associate nouns with female homosexuality or same-sex attraction. Fisting pornography features the insertion of an entire hand into a performer vagina or anus. Erotic spanking is the act of spanking another person for the sexual arousal or gratification of either or both parties. For uncircumcised males, stimulation of the penis in this way comes from the pumping of the foreskin, in which the foreskin is held and slid up and down over the glans, which milf xxx depending on foreskin length, is completely or partially covered and then uncovered in a rapid motion. Also see POV. 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. 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. Pornographic films or sex films are films that present sexually explicit subject matter for the purpose of sexual arousal and erotic satisfaction of the viewer. It is mutual consent that makes a clear legal and ethical distinction between BDSM and such crimes as sexual assault or domestic violence. Technically this is a form of exhibitionism rather than group sex per se. In hentai movies addition to mainstream pornography, the popularity of facials has led to creation of its own niche market, like video series that specialize in showing the act. Interracial pornography typically employs ethnic and racial stereotypes in its depiction videos gays of performers and many of interracial pornographic films still include racial stereotypes, although the segregation of actors by race has diminished considerably.