In academic discourse, racial fetishism is a postcolonialist term found in the writings of authors such as Homi K. If one person is penetrated by two objects, it is generically called double penetration . Hamedori is a genre of Japanese pornography in which a male adult video actor or director serves as the camera operator. Films with risqué content commenced to be produced soon after the invention of the motion picture in the 1880s. Individuals are also sometimes abbreviated when referred to in writing, so a dominant person may be referred to as a Dom for a man, and a Domme for a woman. In general, BDSM play is usually structured such that it is possible for the consenting partner to withdraw his or her consent during a scene; for example, by using a safeword that was agreed on in advance. Concerted deployed sexual rejection exercised on the partner can be an aspect of Dominance and Submission as well. Pornography in Japan is large and intertwined business of adult entertainment hentai sex with unique characteristics that readily distinguish it from western pornography. Real medical shots or videos may violate privacy laws in some countries. There has been an increase in discussion and portrayal of masturbation in art, popular music, television, films, and literature. Women oriented pornography is sometimes referred to as sex positive pornography. Bestiality is illegal in many countries. Foot fetishism has been defined as a pronounced sexual interest in the gay boy porn feet or footwear. Incest itself is largely taboo, and is a crime in many countries. The term sadomasochism is derived from the words sadism and masochism . It is also followed by dedicated industry publications and trade groups as well as the mainstream press, private organizations , government agencies, and political organizations. Though there have been numerous gang bang pornographic films since the 1980s, they usually involved no more than half a dozen to a dozen men. Other objects such as ball point pens and thermometers are sometimes used, although this practice can lead to injury milf xxx and/or infection.