In cartoon porn many cases, that person is also aroused by smelling body parts that have a urine scent. Rough sex pornography is similar to pornography featuring sadomasochism, and typically features a Top who humiliates and/or degrades a Bottom while being physically violent towards them. Voyeur or peeping Tom pornography is usually more staged with the subjects aware of the cameras, sometimes openly including this exhibitionist awareness. A facial is a form of non-penetrative sex, though it is generally performed after some other means of sexual stimulation, such as vaginal sex, anal sex, oral sex or masturbation. In pornography, depictions of lesbian sex form a popular subgenre, directed toward a male heterosexual and female homosexual audience. Masturbation has been depicted in art since hentai videos prehistoric times and is mentioned and naked celebrities discussed in very milf fuck early writings. But starting with The World Biggest Gangbang , starring Annabel Chong, the pornographic industry began producing a series of films ostensibly setting gangbang records for most consecutive sex acts by one person in a short period. Bukkake, Gokkun, gay male sex Omorashi, and tentacle erotica are few uniquely Japanese genres known to western viewers. The most common depiction of a hermaphrodite is a person with a female face, breasts, and build, and a penis , although there are other gay sex video combinations. A pearl necklace is a slang term referring to a sexual act in celebrity news which a man ejaculates semen on or near the neck, chest, or breast of another person. Men and women may masturbate until they are close to orgasm, stop for a while to reduce excitement, and then resume masturbating. The 1979 U. Babysitter pornography features usually teenage girls being exploited and having taboo sex with older, male employers. Some couples use pornography at times for variety and to create a sexual interest or as part of foreplay. Sex experts have praised various techniques that the performer can use during fellatio to increase their partner pleasure. Another variant of reality pornography consists of normal couples that are filmed by professionals, in which case the only obvious distinction from amateur pornography is the higher quality of production, filming and editing.