In S/M, the Sadist is usually the Top and the Masochist the Bottom, but these roles are frequently more complicated or jumbled . The term pearl necklace is used by some because the drops of semen deposited by the man resemble a necklace of translucent white pearls. The work of Bruce Seven has been called reality porn, due to his lack of using scripts and asking his performers to act naturally in their own character. Clothes wetting: The person is sexually aroused by wetting one clothing or observing another person doing so. The name is a reference to gonzo journalism, in which the reporter is part of the event taking place. The first explicit pegging scene is believed to have been in the 1975 pornographic film The Opening of Misty Beethoven. A survey by the New York City Department of Health and Mental Hygiene found that heterosexual women are more likely to bareback when engaging in anal sex than homosexual and bisexual men. The term applies to milf xxx the depiction hentai sex of the act rather than the act itself, and so does not include live exhibitions like sex shows and striptease. Diaper pornography involves performers wearing diapers, sometimes with an adult performer acting in the role of a caretaker. The term Asiaphile is sometimes used to describe the same phenomenon as is yellow fever . Both sexes sometimes apply lubricating substances to intensify sensation. Urolagnia is a form of salirophilia in which sexual excitement is associated with the sight or thought of urine or urination. Usually that person prefers to stage the wetting so that his/her legs become soaked with urine. Men may also rub or massage the glans, the gaysex rim of the glans, and the frenular delta. Oral sex pornography frequently features a person performing fellatio, and less frequently cunnilingus. The strategies and tactics that are used to smuggle one of the couple into and out of the toilet undetected are as important or almost as important as the urination. Typically featured are hitting, choking, name-calling and hair-pulling.