However the genre remains a very small proportion of the pornographic DVD market; for example at porn retailer HotMovies. Fisting involves the insertion of one partner entire hand into a vagina or the anal cavity. There were also a very limited number of specialist fetish magazines which featured images of bondage, such as the famous Bizarre magazine published from 1946 to 1959 gay movies by the pioneering fetish photographer John Willie, and ENEG Exotique magazine, published 1956-1959. Guro or Gore is a genre of Japanese pornography involving blood, gore, disfiguration, violence, mutilation, hentai videos urine, enemas, or feces. Unlike erotic films, pornographic films contain explicit sexuality and do not claim any artistic merit. Some productions are noted for sophisticated and/or experimental storytelling and animation techniques. 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. A common way that these are depicted in a single scene is with one woman and two men performing together. Homi Bhabha defined the idea of a racial fetish in contrast to the idea of the Freudian sexual fetish which he describes a denial of difference, where the male sees the female as a castrated male, seeing missing parts rather than a different anatomy. Incest pornography can feature actual relatives, but the main type of this pornography naked milf simply uses actors of similar looks to suggest family relationship. Participants usually derive pleasure from this, even though many of the practices—such as inflicting pain or humiliation or being restrained—would be unpleasant under other circumstances. Performers are usually clean-shaven, thinner and more effeminate than ones in mainstream gay pornography. Lesbianism has been a theme in erotic art since at least the time of ancient Rome, and many regard depictions of lesbianism to be erotic. Arousal may be triggered by seeing the body movements or facial expressions of that person.