Point of view pornography is adult entertainment filmed to look as if the watcher were experiencing the sex act themselves. Hentai narrow Japanese usage and broad international usage are often incompatible. By comparison, gonzo pornography puts the camera right into the action, often with one or more of the participants both filming and performing sexual acts, without the usual separation between camera and performers seen in conventional porn and cinema. For a foot fetishist, points of attraction include the shape and size of the foot and toes , jewelry , treatments , state of dress , odor, and sensory interaction . Such grounds and even the definition of pornography have differed in various historical, cultural, and national contexts. HIV is among the infections that require such direct contact and is therefore very unlikely to be transmitted via mammary intercourse. These are momsex often fake. In the gay pornography industry, which uses amateurs as well as professional actors, gay twink porn the term gay-for-pay refers to actors labeled or believed to be straight but who engage in same-sex sexual activities for money. The term breast fetishism is also used to refer to cultural attention to female breasts and the sexuality they represent, with debate continuing as to whether the modern widespread fascination with breasts among heterosexual males in western societies is a sexual fetish. Group sex pornography features at least two men and two women , usually more, who all perform sex acts on each other. The mouth was the most common area to be ejaculated upon. A 2009 study found that heterosexual male fat admirers preferred females that were clinically overweight and rated both overweight and obese women more positively than slighter individuals. They signal the presence of estrogen and the presence of sufficient fat stores for pregnancy and lactation. 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 hentai movies initialism from B&D, D&S , and S&M.