Gonzo pornography is a style of pornographic film that attempts to place the viewer directly into the scene. Studies among BDSM practitioners in the US have shown that about half of all men find the idea of bondage to be erotic; many women do as well. Such grounds and even the definition of pornography have differed in various historical, cultural, and national contexts. In Japan, point of view pornography is referred to as hamedori . Breeding is sometimes followed by felching, which involves sucking the semen from the partner anus. Real school shots or videos which are sexualized may violate privacy laws in some countries. A spanking may be carried out with the use of a bare or gloved hand, or with any of a variety of implements, including a paddle, strap, hairbrush, feather duster or belt. This makes varying degrees of stimulation an integral part of oral sex for many men. The cover can have hinges or be a separate hentai porn part. While wearing diapers, a diaper fetishist generally experiences a comforting feeling. Mammary big tit milf intercourse has sometimes been considered a perversion. This technique is also used by some men who are circumcised who have gay sex video excess skin left from circumcision. Sadism describes sexual pleasure derived by inflicting pain, degradation, humiliation on another person or causing another person to suffer. The resulting consent and understanding is occasionally summarized in a written contract, which is an agreement of what can and cannot take place. The loose and direct camera work often includes tight shots of the genitalia, unlike some traditional porn. Yuri : Featuring two grown adult women in a homosexual/lesbian relationship. Many transgender people regard the term shemale as offensive, arguing that it mocks or shows a lack of respect towards the gender identity and gender expression of transgender individuals; in this view, the term emphasizes the biological sex of a person and neglects their gender. His most famous model was Bettie Page, who became the first celebrity of bondage film and photography.