Rainbow party A rainbow party is an urban legend spread from the early 2000s. Pornographic films are typically categorized as either softcore or hardcore pornography. In the 18th and 19th centuries, some European theologians and physicians described it as heinous, deplorable, and hideous, but during the 20th century, these taboos generally declined. It is also followed by dedicated industry publications and trade groups as well as the mainstream press, private organizations , government agencies, and political organizations. The term pearl necklace is used by some because the drops of semen deposited by the man resemble a necklace of translucent white pearls. Buttocks are sometimes emphasized in pornography, where they are milf fuck often referred to as booty. The other person may do the same during or after. Hermaphrodite, also known as herm, refers to pornography, typically hentai, that features persons with the genitalia of both sexes. Femdom features BDSM scenes in which the dominant partner is female. It is geared towards heterosexual men, who most typically define a threesome as such. Works in this genre may be considered adult for any number of reasons. It is also known colloquially as gushing or squirting, although these are considered to be different phenomena in some research hentai movies publications. Older names for a pornographic film include stag film, and blue movie. Preggo pornography features pregnant hot gay sex performers and may include erotic lactation as a fetish. Because the viewing of such films carried a social stigma, they were viewed at brothels, adult movie theaters, stag parties, at home, in private clubs and also at night cinemas. For some people, non-penetrative sex is the primary sexual activity of choice above all others. 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. When the interest in a particular subject is obsessive, the behavior may be described as stalking.