The inside of a smotherbox is often padded to provide support for their hentai videos neck and prevent horny milfs their head from moving. Interracial pornography typically employs ethnic and racial stereotypes in its depiction of performers and many of interracial pornographic films still include racial stereotypes, although the segregation of actors by race has diminished considerably. Now facial cumshots are regularly portrayed in pornographic films, videos, magazines and internet web sites. In more vigorous forms of fisting, such as punching or gay bear porn punchfisting, a fully clenched fist may be inserted and withdrawn slowly. Hentai is the various forms of Japanese pornography, including H-manga, H-anime, and H-computer games. Since at least 1973, it has also been used to refer to a sexually attractive young woman. BDSM is a variety of erotic practices involving dominance and submission, role-playing, restraint, and other interpersonal dynamics. Clothed female, naked male is a genre of erotica featuring one or more nude men and one or more clothed women. As of 2013, little analysis of this paraphilia has been reported in medical literature. In pornography, depictions of lesbian sex form a popular subgenre, directed toward a male heterosexual and female homosexual audience. This technique may include the use of a simulacrum, or artificial vagina. However, the tradition of bondage magazines continues in the form of art books of bondage photographs, published by mainstream publishers such as Taschen. It may be used as foreplay, or as an alternative to sexual penetration. Pegging is a sexual practice in which a woman performs anal sex on a man by penetrating the man anus with a strap-on dildo. In the context of consensual erotic activities, sadism and masochism are not strictly accurate terms; there is a significant difference from the medical or psychological usage of both terms. The term discipline describes psychological restraining, with the use of rules and punishment to control overt behavior.