A celebrity may allow such a recording to surface willingly, as part of a publicity stunt. In September 2003 the BBC reported on the new dogging craze. Pleasure for the giver during anilingus is usually based more on the principle of the act. He talked to them extensively on camera so that both he and the viewer can come to know them before any sex scenes. By Japanese law, the genitals of actors and actresses must be censored and up the mid-1990 so was the depiction of pubic hair. Japanese rope bondage is distinguished by its use of specific katas and aesthetic rules. The Japanese sex industry uses the term Paizuri . Mammary intercourse is said by Alex Comfort to produce mutual orgasm in women with sensitive breasts , and it was one of the nine substitute exercises for penetrative sexual activities, as detailed in the Paradis Charnels of 1903. However the genre remains a very small proportion of the pornographic DVD market; for example at porn retailer HotMovies. It can be combined with fellatio and the woman may move her breasts up and down on the penis for an additional stimulation, usually young gay porn before the man reaches orgasm. Teacher and Student or Boss and Secretary pornography involves sexualized situations which take place between an authority figure, such as a teacher or boss, and an underling, such as a student or secretary, often fake. Real enema shots or videos of true medical situations may violate privacy laws in some countries. The term lesbian is also used with regard to sexual identity or sexual behavior, regardless of sexual orientation, or as an adjective big tit milf to characterize or associate nouns with female homosexuality or same-sex attraction. In recent years, Japanese films of this genre have become more common in the USA and Europe although it still remains a small, fetish-oriented part of the adult film industry. Using the term shemale for a transsexual hentai videos woman often implies that she is working in the sex trade. The first pegging scene appears to have been in the non-pornographic 1970 film Myra Breckinridge, based on the novel of the same name by Gore Vidal, although it was not explicit.