Some may keep their hand stationary while pumping into it with pelvic thrusts in order to simulate the motions of sexual intercourse. For circumcised males, on whom the glans is mostly or completely uncovered, hentai sex this technique creates more direct contact between the hand and the glans. In some scenes or relationships it may be impossible for consent to be withdrawn in the middle of a scene, or the bottom may have the ability to revoke consent for a relationship as a whole, but not for a particular scene. Hamedori is a genre of Japanese pornography in which a male adult video actor or director serves as the camera operator. Solo performances in gay pornography have been described in 1985 as either or both active and/or passive , whereas female solo performances are said to be exclusively passive . A homosexual threesome would involve either three men or three women. Mammary intercourse is known as titty-fucking, titfuck, or a titjob in the United States, as well as tit wank or French fuck in the United Kingdom - the latter term dating back to the 1930s; while a more jocular equivalent is a trip down mammary lane. Bukkake pornography involves a performer, usually female, onto whom several men or women ejaculate, usually on the face. They further argue that setting a discrete line between safe and not-safe activities ideologically denies consenting adults the right to evaluate risks vs rewards for themselves; that some adults will be drawn to certain activities regardless of the risk; and that BDSM play—particularly higher-risk videos porno gay play or edgeplay—should be treated with the same regard as extreme sports, with both respect and the demand that practitioners educate themselves and practice the higher-risk activities to decrease risk. This can, however, redirect semen into the bladder . Lying face down on a comfortable surface such as a mattress or pillow, the penis can be rubbed against it. The strategies and horny milfs 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.