Transsexual pornography is a genre of pornography. Most bisexual porn is made by small hentai movies production companies rather than the major studios. Transsexual porn star Wendy Williams has stated that transsexual Porn is classified as Straight Specialty. On May 27, 2010 the television program The Doctors discussed the topic with dozens of teens, parents, and professionals. Bestiality is illegal in many countries. Normal quantities of ejaculate range from 1.5 to 5.0 milliliters . Older names for a pornographic film include stag film, and blue movie. The first explicit pegging scene is believed to have been in the 1975 pornographic film The Opening of Misty Beethoven. Female dominance refers to BDSM relationships and BDSM scenes in which the dominant partner is female. Though there have been numerous gang bang pornographic films since the 1980s, they usually involved no more than half a dozen to a dozen men. Some may keep their hand stationary while pumping into it with pelvic thrusts in order to simulate the motions of sexual intercourse. It has also been recommended nude milfs as a form of foreplay or safer sex. Mutual masturbation, mutual manual stimulation of the genitals between partners, can be a substitute for sexual penetration. Yaoi is anime or manga that features gay males . While anal sex is commonly associated with male homosexuality, research shows that not all gay males engage in anal sex and that it is not uncommon in heterosexual young gay porn relationships. Celebrity sex tapes are amateur or professionally-made recordings of sex acts, as performed by a celebrity and their partner. Irrespective of the legal or social view of pornography, it has been used in a number of contexts. The phrase buttered bun is sometimes used to refer to the owner of the orifice in question. Patricia Hill Collins, an African-American writer, theorizes that this is derived from a stereotype that those of black descent are promiscuous, and their buttocks are objectified by porn as a result. In academic discourse, racial fetishism is a postcolonialist term found in the writings of authors such as Homi K.