Sometimes special furniture is used, such as a queening stool or smotherbox. Fisting involves the insertion of one partner entire hand into a vagina or the anal cavity. As in B/D, the declaration of the Top/Bottom may be required, though gay boy porn sadomasochists may also play without any Power Exchange at all, with both partners equally in control of the play. There is also some evidence that pornography can be used to treat voyeurism. Sub-genres of Japanese porn Among the various sub-genres of Japanese pornography are the following: Lolicon ロリコン: This genre involves prepubescent and adolescent girls between the aged of 6-12. Unlike erotic films, milf fuck pornographic films contain explicit sexuality and do not claim any artistic hentai videos merit. One or more of the participants may engage in autoerotic sexual activity, such as masturbation, possibly without physical contact with the other participants. A pearl necklace is a slang term referring to a sexual act in which a man ejaculates semen on or near the neck, chest, or breast of another person. Often a dominant woman, she may be called a Dom, Domme /ˈdɒm/, Femdomme, Domina, or Dominatrix, depending on context or personal preference. 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 productions are noted for sophisticated and/or experimental storytelling and animation techniques. Another variant of reality pornography consists of normal couples that are filmed by professionals, in which case the only obvious distinction from amateur pornography is the higher quality of production, filming and editing. This category also includes pornographic home movies. There were also a very limited number of specialist fetish magazines which featured images of bondage, such as the famous Bizarre magazine published from 1946 to 1959 by the pioneering fetish photographer John Willie, and ENEG Exotique magazine, published 1956-1959.