Shemale is a term primarily used in sex work to describe a trans woman with male genitalia combined with female secondary sex characteristics, usually including augmented female breasts, from breast augmentation and/or use of hormones. Masturbation has been depicted in art since prehistoric times and is mentioned and discussed in very early writings. Bukkake, Gokkun, Omorashi, and tentacle erotica are few uniquely Japanese genres known to western viewers. Cum-shot pornography features a collection of male ejaculation scenes. The 1979 U. 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. Ethnic pornography is a genre of pornography that features performers of specific ethnic groups, or depictions of interracial sexual activity. Sometimes special furniture anime hentai is used, such as a queening stool or smotherbox. Boot fetishism is a sexual fetish dedicated to boots. But starting with The World Biggest Gangbang , starring Annabel Chong, the pornographic industry began producing a series of films ostensibly setting gangbang records for most consecutive sex acts by one person in a short period. Freud, however, considered such extensions of sexual interest to fall within the range of the normal, unless marked out by exclusivity . Pornography is often referred to as porn momporn and a pornographic work gay bear porn as a porno. Enema pornography involves adults given enemas to others, often fake. Body parts including fingers, tongue and penis may be used for anonymous oral, vaginal and/or anal intercourse. A variation on this is to place the fingers and thumb on the penis as if playing a flute, and then shuttle them back and forth. Transsexual people Transman pornography features performers who were born female and who medically transitioned to male. It can be combined with fellatio and the woman may move her breasts up and down on the penis for an additional stimulation, usually before the man reaches orgasm.