One-sided male nudity can also arise when a male disrobes as part of a male striptease. For uncircumcised males, stimulation of the penis in this way comes from the pumping of the foreskin, in which the foreskin is held and slid up and down over the glans, which depending on foreskin length, is completely or partially covered and then uncovered in a rapid motion. Consent is the most important criterion here. Matsuo used amateur actresses in his videos, and he usually traveled to their hometowns for the filming. 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 naked milf the aged of 6-12. Sexual scenarios may involve male domination, female submission, exhibitionism and erotic entertainment. Hentai is the various forms of Japanese pornography, including H-manga, H-anime, hentai movies and H-computer games. 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. In September 2003 the BBC reported on the new dogging craze. 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. Guro or Gore is a genre of Japanese pornography involving blood, gore, disfiguration, violence, mutilation, urine, enemas, or feces. There is also some evidence that gay bear porn pornography can be used to treat voyeurism. Facial cum shots are currently regularly portrayed in pornographic films and videos, often as a way to close a scene. Unlike the traditional definition of the term, in fetish usage a cuckold is complicit in their partner sexual infidelity and takes masochistic sexual pleasure in it. Lesbian pornography made for women is usually made by women, and usually features women who identify as lesbian or bisexual. The stimulation may involve hands, fingers, everyday objects, sex toys or combinations of these.