Pleasure for the giver during anilingus is usually based more on the principle of the act. Men and women may masturbate until they are close to orgasm, stop for a while to reduce excitement, and then resume masturbating. Gonzo porn is influenced by amateur pornography, and it tends to use far fewer full-body/wide shots in favor of more close-ups . Hugo Ohira, director of marketing for Silvercash, rhetorically asks Who does not like spewing their load on a pretty young face? 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. 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. It is mutual consent that makes a clear legal and ethical distinction between BDSM and such crimes as sexual assault or domestic violence. Saliva pornography involves salivation and saliva. 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. There is also some evidence that pornography can be used to treat voyeurism. Voyeurism: Seeing another urinate without the person knowledge either through video taping by a hidden gay movies camera, or by lurking in locations where people are urinating or are likely to have an urge to urinate. Individuals hentai sex 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 lesbian milfs in this context is occasionally seen as derogatory and is rejected by many who might simplistically fit the definition. However, the tradition of bondage magazines continues in the form of art books of bondage photographs, published by mainstream publishers such as Taschen.