People may experience pleasure from anal sex by stimulation of the anal nerve endings, and orgasm may be achieved through anal penetration – by indirect stimulation of the prostate in men, indirect clitoral/G-spot stimulation in women, and associated sensory nerves . At the end of the evening the female partners would randomly select keys from the bowl and leave with that key owner. Bondage websites and bondage imagery in mainstream pornography As of 2003, specialist bondage magazines were mostly displaced by the availability of bondage material on the World Wide Web, and the presence of bondage imagery in mainstream pornographic magazines such as Nugget and Hustler Taboo magazine. Masturbation is the self-sexual stimulation of the genitals for sexual arousal or other sexual pleasure, usually to the point of orgasm. Tentacle erotica can be consensual, but lesbian hentai frequently contains elements of non-consensual sex. Bukkake pornography involves a performer, gay movies usually female, onto whom several men or women ejaculate, usually on the face. Rainbow party A rainbow party is an urban legend spread from the early 2000s. This type of pornography is almost exclusively hentai, lesbian milfs as true hermaphroditic humans are not fertile and are not usually found in nature. Today, pornographic films can be sold or rented on DVD, shown through Internet and special channels and pay-per-view on cable and satellite, and in adult theaters. What seems clear from the historical record is that much of the lesbian material in pornographic texts was intended for a male readership. Irrespective of the legal or social view of pornography, it has been used in a number of contexts. Diaper fetishism, nappy fetishism or diaperism, is a sexual fetish in which a person feels a desire to wear or use diapers. Medical pornography involves sexualized medical, often fake, including gynecological pelvic examinations, rectal examinations, and pelvic or gynecological ultrasounds. Group sex pornography features at least two men and two women , usually more, who all perform sex acts on each other.