This style hentai videos of filming is in contrast to having a separate, third-person camera crew filming all the action. There has been an gay sex video increase in discussion and portrayal of masturbation in art, popular music, television, films, and literature. Depictions of male and female masturbation are common in pornography, including gay pornography. BDSM actions can often take place during a specific period of time agreed to by both parties, referred to as play, a scene or a session. The reverse of this, in which nude women interact with clothed men, is called Clothed male, naked female . A sex party is a gathering at which sexual activity takes place. The porn industry and viewing public were shocked by the then-taboo spectacle of a white woman having sex with a black man. A survey by the New York City Department of Health and Mental Hygiene found that heterosexual women are more likely to bareback when engaging in anal sex than homosexual and bisexual men. English adopts and uses hentai as a genre of pornography by the commercial sale and marketing of explicit works under this label. Pornography is often referred to as horny milfs porn and a pornographic work as a porno. This fetish sometimes originates from childhood memories of needing, or of seeing another needing, to urinate. Voyeurism: Seeing another urinate without the person knowledge either through video taping by a hidden camera, or by lurking in locations where people are urinating or are likely to have an urge to urinate. It is sometimes combined with BDSM features. These agreements are binding in the sense that the parties have the expectation that the negotiated rules will be followed. The term Asiaphile is sometimes used to describe the same phenomenon as is yellow fever . Clothes wetting: The person is sexually aroused by wetting one clothing or observing another person doing so. Pornography is often distinguished from erotica, which consists of the portrayal of sexuality with high-art aspirations, focusing also on feelings and emotions, while pornography involves the depiction of acts in a sensational manner, with the entire focus on the physical act, so as to arouse quick intense reactions.