Foot fetish pornography features heavy emphasis on the feet of the participants, either in combination with kissing and genital sex or in the context of acts such as trampling or crush fetishism. Bisexual pornography is a genre of pornography which most typically depicts one woman and two men who all perform sex acts on each other. In academic discourse, racial fetishism is a postcolonialist term found in the writings of authors such as Homi K. First found in softcore movies and erotic thrillers, gay twinks depictions of lesbianism entered mainstream cinema in the 1980s. Celebrity sex tapes are amateur or professionally-made recordings of sex acts, as performed by a celebrity and their partner. There were also a very limited number of specialist fetish magazines which featured images of bondage, such as the famous Bizarre magazine published from 1946 to 1959 by the pioneering fetish photographer John Willie, and ENEG Exotique magazine, published 1956-1959. Lesbian pornography made for women is usually made by women, and usually features women who identify as lesbian or bisexual. 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. The inside of a smotherbox is often padded to provide support for their neck and prevent their head from moving. Another nude milfs variant of reality pornography consists of normal couples that are filmed by professionals, in which case the only obvious distinction from amateur pornography is the higher quality of production, filming and editing. This may help them develop their orgasm, hentai movies increase its pleasure, and may inspire them to masturbate on a more frequent basis. The object or situation of interest is called the fetish; the person who has a fetish for that object/situation is a fetishist. In human sexuality, a threesome is sexual activity that involves three people at the same time. Sadomasochism does not imply enjoyment through causing or receiving pain in other situations .