Sloppy seconds is a slang phrase for when a man has sexual intercourse with another person who already has received another man penis in the relevant orifice and is therefore wet or sloppy. 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. It can be combined with fellatio and the woman may move her breasts up and down on the penis for an additional stimulation, usually before the man reaches orgasm. Though the term anal sex most commonly means penile-anal penetration, sources sometimes use the term anal intercourse to refer exclusively to penile-anal penetration, and anal sex to refer to any form of anal sexual activity, especially between pairings as opposed to anal masturbation. Individuals who can change between top/dominant and bottom/submissive roles—whether from relationship to relationship or within a given relationship—are known as switches, though the term switch in this context is occasionally seen as derogatory and is rejected by many who might simplistically fit the definition. Can also include auto-fellatio, or performing oral sex on oneself. The anus has a relatively high concentration of nerve endings and hentai porn can be an erogenous zone, and the receiver may receive pleasure from external anal stimulation. Babysitter pornography features usually teenage girls being exploited and gay sex video having taboo sex with older, male employers. Human urinal: An act common in the bondage sex community where a male or female milf fuck slave will serve as a urinal for a dominant partner. The stimulation may involve hands, fingers, everyday objects, sex toys or combinations of these. Facial cum shots are currently regularly portrayed in pornographic films and videos, often as a way to close a scene. 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.