A pearl necklace is a slang term referring to a sexual act in which a man ejaculates semen on or near the neck, chest, or breast of another person. In addition to mainstream pornography, the popularity of facials has led to creation of its own niche market, like video series that specialize in showing the act. Lesbianism has been a theme in erotic art since at least the time of ancient Rome, and many regard depictions of lesbianism to be erotic. Pregnancy fetishism is a context where pregnancy is seen by individuals or cultures as an erotic phenomenon. The name is a reference to gonzo journalism, in which the reporter is part of the event taking place. It is used, for example, at fertility clinics to stimulate sperm donors. Celebrity sex tapes are amateur or professionally-made recordings of sex acts, as performed by a celebrity and their partner. By Japanese law, the genitals of actors and actresses must be censored and up the mid-1990 so was the depiction of pubic hair. A few extremely flexible males can reach and stimulate their penis with their tongue or lips, and so perform autofellatio. Transsexual porn star Wendy Williams has stated that transsexual Porn is classified as Straight Specialty. Since development and pronunciation of the buttocks begins at menarche and declines with gay boy porn age, full buttocks are also a symbol of youth. The original definition of dogging – and which is still a porn milf closely related activity – is spying on couples having sex in a car or other public place. Real medical shots or videos may 3d hentai violate privacy laws in some countries. Generally, interest differs between people, and gender depends on sexual orientation. Advocates of RACK argue that SSC can hamper discussion of risk because no activity is truly safe, and that discussion of even low-risk possibilities is necessary for truly informed consent. Is also common of the furry genre. Multiple men and women Bisexual pornography features one woman and two men who all perform sex acts on each other.