In pornography, depictions of lesbian sex form a popular subgenre, directed toward a male heterosexual and female homosexual audience. Big Beautiful Woman is a euphemism for an overweight woman and is frequently used in the context of fat fetishism. In the 1970s, the hardcore pornography genre introduced the stereotypical cumshot scene as a central element of the hardcore film, in which the male actor ejaculates in a way ensuring maximum visibility of the act itself. A celebrity may allow such a recording to surface willingly, as part of a publicity stunt. Mutual masturbation is a sexual act where momsex two or more people stimulate themselves or one another sexually, usually with the hands. Pornographic films hot gay sex present sexual fantasies and usually include erotically stimulating material such as nudity. Fisting involves the insertion of one partner entire hand into a vagina or the anal cavity. A female dominant hentai videos in a master/slave relationship is often termed a Mistress, not to be confused with the colloquial usage of mistress as a kept sexual partner without a similarly formalized power relationship. Matsuo used amateur actresses in his videos, and he usually traveled to their hometowns for the filming. The term soft crush refers to the more common fetish surrounding videos involving inanimate objects or small invertebrates being crushed, while the term hard crush refers to such videos involving larger animals with vertabrae, and arguably more pain-susceptible animals . Reality Reality pornography refers to real or faked amateur encounters. 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. Although pornography has usually focused on heterosexuality, due to the prevalence of the heterosexual orientation, explicit gay material has a long history as well, which reaches back to Greek antiquity, if not to prehistory. Initially, few animation studios in the United States attempted to produce animation for adult audiences, but later examples of animation produced for adults would gain mainstream attention and success.