These scenes may either have the cameraman directly engaging in sex or merely filming others having sex. Bhabha, Anne McClintock and Kobena Mercer. Mammary intercourse is said by Alex Comfort to produce mutual orgasm in women with sensitive breasts , and it was one of the nine substitute exercises for penetrative sexual activities, as detailed in the Paradis Charnels of 1903. Sadomasochism does not imply enjoyment through causing or receiving pain in other situations . The term soft crush refers to the more common fetish surrounding videos involving inanimate objects or small invertebrates being crushed, mature milfs while the term hard crush refers to such videos involving larger animals with vertabrae, and arguably more pain-susceptible animals . These agreements are binding in the 3d hentai sense that the parties have the expectation that the negotiated rules will be followed. In September 2003 the BBC reported on the new dogging videos gays craze. This fetish sometimes originates from childhood memories of needing, or of seeing another needing, to urinate. Women porn is often produced by women and aimed specifically at the female market - rejecting the view that men are turned on by porn but women only by a box of chocolates. For other scenes, particularly in established relationships, a safeword may be agreed to signify a warning rather than explicit withdrawal of consent; and a few choose not to use a safeword at all. Body parts including fingers, tongue and penis may be used for anonymous oral, vaginal and/or anal intercourse. The padding may also muffle noises from the outside, causing a relaxation effect and heightening their other senses. Hentai is the various forms of Japanese pornography, including H-manga, H-anime, and H-computer games. Bareback sex is physical sexual activity, especially sexual penetration, without the use of a condom. He talked to them extensively on camera so that both he and the viewer can come to know them before any sex scenes. Related genres include: Amateur pornography originally referred only to pornography produced by amateurs but now also includes professionally made pornography designed to appear as if it were amateur.