Body parts including fingers, tongue and penis may be used for anonymous oral, vaginal and/or anal intercourse. The person sat upon may be in bondage, sexually submissive, or simply held down by the body-weight of the other person. In pornography, depictions of lesbian sex form a popular subgenre, directed toward a male heterosexual and female homosexual audience. Entacle erotica describes a type of pornography most commonly found in Japan which integrates traditional pornography with elements of bestiality and a fantasy, horror, or science-fiction theme. In the 1970s, the hardcore pornography genre introduced the stereotypical cumshot scene as a central element of the hardcore film, in which the male actor ejaculates in a way ensuring maximum visibility of the act itself. Mutual masturbation gay twinks is a sexual act where two or more people stimulate themselves or one another sexually, usually with the hands. Many men who like trans partners big tit milf of any variety, known as tranny chasers, do not necessarily identify as gay themselves. Currently, animated television series aimed at adults are some of the most popular and critically acclaimed forms of entertainment. Crying pornography that features participating actors crying. Sub-genres of Japanese porn Among the various sub-genres of Japanese pornography are the following: Lolicon ロリコン: This genre involves prepubescent and adolescent girls between the aged of 6-12. Although pornography has usually focused on heterosexuality, due to the prevalence of the heterosexual orientation, explicit gay material has a long history as well, which reaches back to Greek antiquity, if not to prehistory. Guro or Gore is a genre of Japanese pornography involving blood, gore, disfiguration, violence, mutilation, urine, enemas, or feces. Lesbianism has been a theme in erotic art since at least the time of ancient Rome, and many regard anime hentai depictions of lesbianism to be erotic. The person receiving anilingus is regarded as the passive partner in the act, and the person performing anilingus is the active partner.