Pornography is often distinguished from erotica, which consists of the portrayal of sexuality with high-art aspirations, focusing also on feelings and emotions, while pornography involves the depiction of acts in a sensational manner, with the entire focus on the physical act, so as to arouse quick intense reactions. Adult animation is genre of animation geared towards adults and sometimes hentai porn teens. Transsexual pornography is a genre of pornography. Though there have momsex been numerous gang bang pornographic films since the 1980s, they usually involved no more than half a dozen to a dozen men. Older names for a pornographic film include stag film, and blue movie. Spanking can be administered in a number of spanking positions. Men may also rub or massage the glans, the rim of the glans, and the frenular delta. Internal ejaculation shots are a comparatively recent development in pornography; they are not found in early pornographic films. The existence of such content in commercially available pornography is widely considered an urban legend. Sometimes one or more fingers may be inserted into the vagina to stroke its frontal wall where the G-spot may be located. Animal masturbation has been observed in many species, both in the wild and in captivity. For example, in Australia it is rated Refused Classification . The term combines elements of the Freudian psychoanalytic fetish and the Marxist commodity fetish, and is used in the context of British, Spanish hot gay sex and French colonialism and imperialism and their aftereffects. Softcore gay pornography also exists; it at one time constituted the genre, and may be produced as beefcake pornography for heterosexual female and homosexual male consumption. A variant of A2M is ATOM where a performer inserts his penis directly from one recipient anus into a second recipient mouth. For legal reasons, the vast majority of so-called reality porn involves professional actors and actresses posing as so-called amateurs. Interactive pornography, available in CD-ROM and DVD format, allows the viewer to select the particular acts performed at any one time, sometimes with the camera providing a first person view.