The term BDSM dates back to 1969; however, the origin of the term BDSM is unclear and is believed to have been formed either from joining the term B&D with S&M , or as a compound initialism from B&D, D&S , and S&M. Hermaphrodite, also known as herm, refers to pornography, typically hentai, that features persons with the hentai porn genitalia of both sexes. The term bondage describes the practice of Physical restraining. Women with women Main article: Lesbianism in erotica: Lesbianism in contemporary pornography Lesbian or girl-girl pornography features women engaged in sex together, but is typically aimed at a male audience. Sub-genres can also be classified into the characteristics of gay fuck the performers or the type of sexual activity on which it concentrates, and not necessarily on the market to which each sub-genre appeals. Works in this genre may be considered adult for any number of reasons. They further argue that setting a discrete line between safe and not-safe activities ideologically denies consenting adults the right to evaluate risks vs rewards for themselves; lesbian milfs that some adults will be drawn to certain activities regardless of the risk; and that BDSM play—particularly higher-risk play or edgeplay—should be treated with the same regard as extreme sports, with both respect and the demand that practitioners educate themselves and practice the higher-risk activities to decrease risk. Kurt Wild, who appeared as a bottom in Lucas Entertainment Gigolos, is married to a woman and has three children. Although there may be no connection between coprophilia and sadomasochism , the limited data on the former comes from studies of the latter. The phrase buttered bun is sometimes used to refer to the owner of the orifice in question. Patricia Hill Collins, an African-American writer, theorizes that this is derived from a stereotype that those of black descent are promiscuous, and their buttocks are objectified by porn as a result. Group sex pornography features at least two men and two women , usually more, who all perform sex acts on each other.