However, sex researchers and adolescent health care professionals have found no evidence for the existence of rainbow parties, and as such attribute the spread of the stories to a moral panic. The term has as its origins Frantz Fanon epidermal schema and Edward Said Orientalism. Bondage is usually, but not always, a sexual practice. Other popular implements are canes, riding crops, whips, switches, birches, sneakers, rolled-up newspapers, rulers or martinet. Not all crush fetishists are that extreme! Ethnic pornography is a genre of pornography that features performers of specific ethnic groups, or depictions of interracial sexual activity. Also see anime hentai POV. In D/S, the Dominant is the Top and naked milf the submissive is the Bottom. The term hamedori came into use about 1988–1989, but it was only a small niche area until it was popularized at V&R Planning by director Company Matsuo. Anti-pornography psychologist Ana Bridges gay twinks and colleagues conducted a content analysis of best-selling heterosexual pornographic videos showing that over 96% of all scenes concluded with a male performer ejaculating onto the body of his female partner. Pornography is the portrayal of sexual subject matter for the purpose of sexual arousal. In terms of physical pleasure, a woman genitals may get direct stimulation from the base of the dildo, or in the case of a double-ended dildo, from vaginal penetration. This type of stimulation is typically all that is required to achieve orgasm and ejaculation. POV pornography involves camera angles designed to provide the viewer a view similar to that seen by one of the participants, whose face is never shown. 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. A sub-set of gaping is the “‘tunnel cumshot”, wherein the male ejaculates directly into the gaping anus. The effect is to give the viewer the sense that they are experiencing the sex acts that they are watching, as opposed to simply watching others as a voyeur.