Arcane or occult pornography involves sexualized situations with an occult or magical tone or performers who costume themselves in keeping with the theme, for example, a male performer dressed as a wizard. Tentacle erotica can be consensual, but frequently contains elements of non-consensual sex. Shotacon : Similar to Lolicon, this genre involves prepubescent or under-aged boys between the ages 6–12. As a form of non-penetrative sex, it can be done for its own enjoyment or as foreplay. Sexual orientation Pornography features an increasing variety of combinations of actors by their sexual orientation such as lesbian, gay, bisexual, and transsexuals in addition to traditional heterosexual roles. Urolagnia is a form of salirophilia in which sexual excitement is associated with the sight gay movies or thought of urine or urination. There is, however, no third party camera work involved. Although there may be no connection between coprophilia and sadomasochism , the limited data on the former comes from studies of the latter. Being forced to wear diapers as a form of humiliation is sometimes a behavior encountered in sexual nude milfs masochism. Behind the Green Door was one of the first pornographic films to feature sex between a white actress with a black actor . Spanking can be administered in a number of spanking positions. Is also common of the furry genre. Bondage pornography specializes in the depiction of sexual bondage or BDSM activities as photographs, stories, movies, or drawings. In S/M, the Sadist is usually the Top and the Masochist the Bottom, but these roles are frequently more complicated or jumbled . There are various subcultures under this umbrella term and distinct difference between these subcultures. Its gain in prominence has been attributed to its depiction in the film Pecker, which was released in 1998. They may regard it as an enhancing element of their sex lives or as 3d hentai their primary form of sexual activity. Sigmund Freud considered foot binding as a form of fetishism.