Softcore gay pornography also exists; it at one time constituted the genre, and may be produced as beefcake pornography for heterosexual female and homosexual male consumption. Rape pornography features performers simulating rape. BDSM is a variety of erotic practices involving dominance and submission, role-playing, restraint, and other interpersonal dynamics. It is sometimes combined with BDSM features. First found in softcore movies and erotic thrillers, depictions of lesbianism entered mainstream cinema in the 1980s. Films with risqué content commenced hentai videos to be produced soon after the invention of the motion picture in the 1880s. The original definition of dogging – and which is still a closely related activity – is spying on couples having sex in a car or other public place. Women that take on the roles of the giantess within this fetish often find the practice to be empowering and enjoy being worshiped. These scenes may either have the cameraman mature milfs directly engaging in sex or merely filming others having sex. 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. It like associating every Christian with the zealots who cause religious wars. Incest itself is largely taboo, and is a crime in many countries. By Japanese law, the genitals of actors and actresses must be censored and up the mid-1990 so was the depiction of pubic hair. Animal masturbation has been observed in many species, both in the wild and in captivity. If this is done using penises and/or strap-on dildos, this is sometimes called the sandwich or BigMac. Pregnancy fetishism is a context where pregnancy is seen by individuals or cultures as an erotic phenomenon. Although interracial pornography theoretically can apply to depictions of sexual activity between performers of any different gay cock racial groups, the term is most commonly used for heterosexual sex acts between black and white performers.