Multiple men and women Bisexual pornography features one woman and two men who all perform sex acts on each other. Women oriented pornography is sometimes referred to as sex positive pornography. Some are aroused from wetting their diapers, others like messing their diapers. Contrary to the other two types, B/D does not define the Tops and Bottoms itself, and is used to describe the general activities with either partner being the receiver and the giver. A bisexual threesome may involve a man having sex with a man and a woman, the woman having sex with a man and a woman, or all three having sex with each other. The term combines elements of the Freudian psychoanalytic fetish and the Marxist commodity fetish, and is used in the context of British, Spanish and French colonialism and imperialism and their aftereffects. The porn industry and viewing public were shocked by the then-taboo spectacle of a white woman having sex with a black man. Solo performances in gay pornography have been described in 1985 as either or both active and/or passive , whereas female solo performances are said to be exclusively passive . A related term used in the genre is the term cougar, which momsex implies an older woman as predator. Clothed male, naked female is one-sided female nudity in which one or more females are nude while one or more men are clothed. In Japanese, the term describes any type of perverse or bizarre sexual desire or act; it does not represent a genre of work. Foot fetishism has been defined as a pronounced sexual interest in the feet or footwear. Its primary hentai porn goal is sexual arousal hot gay sex in its audience. In Japanese, this natural-fibre rope is known as asanawa; the Japanese vocabulary does not make a distinction between hemp and jute. In S/M, the Sadist is usually the Top and the Masochist the Bottom, but these roles are frequently more complicated or jumbled . Biological anthropologist Helen B. Pornography in Japan is large and intertwined business of adult entertainment with unique characteristics that readily distinguish it from western pornography.