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. Pornography is often old milf referred to as porn and a pornographic work as a porno. Guro or Gore is a genre of Japanese pornography involving blood, gore, disfiguration, violence, mutilation, urine, enemas, or feces. It is mutual consent that makes a clear legal and ethical distinction between BDSM and such crimes as sexual assault or domestic violence. Especially popular in post-World War 2 Japanese culture. Klaw ran an international mail-order business out of his store, Movie Star News, selling cheesecake pinups and bondage/spanking photos. The anus has a relatively high concentration of nerve endings and can be an erogenous zone, and the receiver may receive pleasure from external anal stimulation. Kinbaku means tight binding Kinbaku-bi which literally means the beauty of tight binding. Bisexual DVDs sell much better online than in adult video stores, possibly due to customers in stores feeling embarrassed to buy them. Hentai is the various forms of Japanese pornography, including H-manga, H-anime, and H-computer games. Big Beautiful Woman is a euphemism for an overweight woman and is frequently used in the context of fat fetishism. Some BDSM practitioners prefer a code of behavior that differs from SSC and is described as risk aware consensual kink , indicating a preference for a style in which the individual responsibility of the involved parties is emphasized more strongly, with each participant being responsible for his or her own well-being. A variation on this is to place the fingers and thumb on the penis as if playing a flute, and then shuttle them back and forth. Amateur porn has been called one of the most profitable and long-lasting genres of pornography. Saliva pornography involves salivation and saliva. Group sex can occur between people of all sexual orientations and genders. As with most forms of sexual activity, anal sex participants risk contracting sexually transmitted infections .