The name was coined from the title of the controversial book. The term is typically used by the cinematographer within the narrative framework of a pornographic film, and since the 1970s has become a leitmotif of the hardcore genre. Spanking can be administered in a number of spanking positions. The porn industry and viewing public were shocked gay boy porn by the then-taboo spectacle of a white woman having sex with a black man. Although there may be no connection between coprophilia and sadomasochism , the limited data on the former comes from studies of the latter. Femdom features BDSM scenes in which the dominant partner is female. Particular areas and processes of the body that change during pregnancy may also become the focus of psychological investment, but nudity or sexual activity is not always essential, and in some cases actual pregnancy is not necessary to invoke arousal. The act may be carried out face to face, or head to tail, with the woman recommended to be on top if she has smaller breasts. Works in this genre may be considered adult for any number of reasons. Kurt Wild, who appeared as a bottom in Lucas Entertainment Gigolos, is married to a woman and has three children. Fisher said that perhaps, the fleshy, rounded buttocks attracted males during rear-entry intercourse. Diaper fetishism is totally independent from pedophilia as the wearer derives pleasure only from the diaper and/or use of it. Is also common of the furry genre. Double Stuffed , Double Vaginal , or Double Anal pornography involves the penetration of one orifice hentai sex by two penises or other objects. Bondage pornography specializes in the depiction of sexual bondage or BDSM activities as photographs, stories, movies, or drawings. Pornography in Japan is large and intertwined business of adult entertainment with unique characteristics that readily distinguish it from western pornography. The term pearl necklace is used by some because the drops of big tit milf semen deposited by the man resemble a necklace of translucent white pearls.