Women oriented pornography is sometimes referred to as sex positive pornography. The reverse of this, in which nude women interact with clothed men, is called Clothed male, naked female . Voyeurism: Seeing another urinate without the person knowledge either through video taping by a hidden camera, or by lurking in locations where people are urinating or are likely to have an urge to urinate. The first explicit pegging scene is believed to have been in the 1975 pornographic hot gay sex film The Opening of Misty Beethoven. There is no singular or archetypical behavior; therefore, a wide range of thought patterns and behaviors exist, but all tends to be a harmless and efficacious release from some kind of pressure. 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. Incest itself is largely taboo, and is a crime in many countries. Femdom features BDSM scenes in which the dominant partner is female. Normal quantities of ejaculate range from 1.5 to 5.0 milliliters lesbian milfs . Hamedori is a genre of Japanese pornography in which a male adult video actor or director serves as the camera operator. The object or situation of interest is called the fetish; the person who has a fetish for that object/situation is a fetishist. Though there have been numerous gang bang pornographic films since the 1980s, they usually hentai videos involved no more than half a dozen to a dozen men. Films with risqué content commenced to be produced soon after the invention of the motion picture in the 1880s. Individuals are also sometimes abbreviated when referred to in writing, so a dominant person may be referred to as a Dom for a man, and a Domme for a woman. Originating in Japan in the 1980s, the genre subsequently spread to North America and Europe, and crossed over into gay pornography. Comic books often featured characters being tied up and tying others up, particularly in damsel in distress plots.