Often, slave contracts are set out in writing to record the formal consent of the parties to the power exchange, stating their common vision of the relationship dynamic. Erotic literature and pornographic films have been devoted to the sexual uses of glory holes. It generally contains nudity or partial nudity in sexually suggestive situations. Erotic spanking is lesbian hentai the act of spanking another person for the sexual arousal momporn or gratification of either or both parties. As amateurs in a single segment of a multi-part video, the actresses are typically paid only about 50,000 yen . In the attempts of circumvent this type of censoring , actors and producers have featured subject matter unseen or rarely depicted in western pornography. POV pornography involves camera angles designed to provide the viewer a view similar to that seen by one of the participants, whose face is never shown. The term has as its origins Frantz Fanon epidermal schema and Edward Said Orientalism. Individuals who can change between top/dominant and bottom/submissive roles—whether from relationship to relationship or within a given relationship—are known as switches, though the term switch in this context is occasionally seen as derogatory and is rejected by many who might simplistically fit the definition. Although interracial hot gay sex pornography theoretically can apply to depictions of sexual activity between performers of any different racial groups, the term is most commonly used for heterosexual sex acts between black and white performers. Kinbaku is a Japanese style of bondage or BDSM which involves tying up the bottom using simple yet visually intricate patterns, usually with several pieces of thin rope . Caro rejected that as being a necessary conclusion, stating that female fatty deposits on the hips improve individual fitness of the female, regardless of sexual selection. High heel pornography involves women or men dressed in high heeled shoes. The anal and rectal tissues are delicate and do not provide natural lubrication, so they can easily tear and permit disease transmission, especially if lubricant is not used.