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. A variation on this is to place the fingers and thumb on the penis as if playing a flute, and then shuttle them back and forth. Fisting pornography features the insertion of an entire hand into a performer vagina or anus. Performers are usually clean-shaven, thinner and more effeminate than ones in mainstream gay pornography. The term is a slang word that originated in the gay community and comes from the equestrian term bareback, which refers to the practice of riding a horse without a saddle. Interracial pornographic films have experienced an explosion in popularity, becoming one of the fastest-growing and biggest-selling momsex genres. Ethnic pornography is a genre of pornography that features celeb sex tapes performers of specific ethnic groups, lesbian hentai or depictions of interracial sexual activity. Strictly speaking, bondage means binding the partner by tying their appendages together; for example, by the use of handcuffs or by lashing their arms to an object. Women in homosexual relationships responded to this designation either by hiding their personal lives or accepting the label of outcast and creating a subculture and identity that developed in Europe and the United States. The anus has a relatively high concentration of nerve endings and can be an erogenous zone, and the receiver may receive pleasure from external anal stimulation. The consent and compliance for a sadomasochistic situation can be granted only by people who can judge the potential results. The first pegging scene appears to have been in the non-pornographic 1970 film Myra Breckinridge, based on the novel of the same name by Gore Vidal, although it videos porno gay was not explicit. Participants usually derive pleasure from this, even though naked celebrities many of the practices—such as inflicting pain or humiliation or being restrained—would be unpleasant under other circumstances.