The phrase buttered bun is sometimes used to refer to the owner of the orifice in question. Spanking can be administered in a number of spanking positions. The prostate gland is one of the organs that contributes fluid to semen. Sub-genres can also be classified into the characteristics of the performers or the type of sexual activity on which it concentrates, and not necessarily on the market to which each sub-genre appeals. In academic discourse, racial fetishism is a postcolonialist term found in the writings of authors such as Homi K. Diaper pornography involves performers wearing diapers, sometimes with an adult performer acting in the role of a caretaker. 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. Incest itself hentai videos is largely taboo, and is a crime in many countries. Creampie scenes depart from heterosexual pornographic convention in favor of a depiction that more closely hottest celebrities mimics sexual intercourse as performed in ordinary life; they have been called the counterimage milf fuck naked celebrities of facials. The range of its individual characteristics is thereby wide. Other fetish Bareback pornography features performers who are not wearing condoms. For example, in Australia gay sex video it is rated Refused Classification . Fisher said that perhaps celeb sex tapes , the fleshy, rounded buttocks attracted males during rear-entry intercourse. There are number of types of sex parties: Swinger party/gathering A swinger party or partner-swapping party is a gathering at which individuals or couples in a committed relationship can engage in sexual activities with others as a recreational or social activity. Starting with erotic stories and woodblock prints from before the 20th century, Japanese pornography evolved into distinct subcategories with the media that in addition of pornographic videos and magazines featuring live actors, there is exist categories of pornographic manga , pornographic computer games , and pornographic anime .