Some anthropologists and sociobiologists believe that breast fetishism derives from the breasts similarity to buttocks, but instead provide sexual attraction from the front of the body. A person may be sexually penetrated multiple times simultaneously. In POV porn, the shooting style is generally similar to gonzo pornography, with the person receiving sexual gratification holding the camera him or herself—aiming it down at the actress or actor who is performing the sex act. Works in this genre may be considered adult for any number of reasons. Such grounds and even the definition of pornography have differed in various historical, cultural, and national contexts. Instead, all five fingers are kept straight and held as close together as possible , then slowly inserted into a well lubricated vagina or rectum. While wearing diapers, a diaper fetishist generally experiences hot gay sex a comforting feeling. A woman can use a secondary vibrator, between the dildo and her genitals, to get pleasure from pegging. Such works have also often been subject to censorship and other legal restraints to publication, display or possession. Some pornographic films hentai videos use an artificial porn milf semen substitute to simulate or enhance creampie shots. Felching is a sexual practice involving the act of orally sucking semen out of the vagina or anus of one partner. A bisexual threesome may involve a man having sex with a man and a woman, the woman having sex with a man and a woman, or all three having sex with each other. Real school shots or videos which are sexualized may violate privacy laws in some countries. Buttocks are sometimes emphasized in pornography, where they are often referred to as booty. Mammary intercourse has sometimes been considered a perversion. Internationally, hentai is a catch-all term to describe a latest celebrity news genre of anime and manga pornography. Cartoon pornography is the portrayal of illustrated or animated fictional characters in erotic or sexual situations. A celebrity can fight the release in court to maintain deniability while still enjoying the career benefits.