The neologism pegging was popularized when it became the winning entry in a contest in Dan Savage Savage Love sex advice column, held after an observation was made that there was no common name for the act. Perhaps following the example set by gay pornography, they have become a popular subgenre within heterosexual pornography since the turn of the century, featuring both vaginal and anal ejaculations. The term breast fetishism is also used to refer to cultural attention to female breasts and the sexuality they represent, with debate continuing as to whether the modern widespread fascination with breasts among heterosexual males in western societies is a sexual fetish. The word shibari came into common use in the West at some point in the 1990s to describe lesbian hentai the bondage art Kinbaku. The genre presents itself as real couples having real sex. Studies among BDSM practitioners in the US have shown that about half of all men find the idea of bondage to be erotic; many women do as well. Following World War II, during a period of social repression when governments actively persecuted homosexuals, women developed networks to socialize with and educate each other. A person may be sexually penetrated multiple times simultaneously. Rubber pornography involves rubber, gay boy porn latex, and similar materials. No causal relationship is known between masturbation and any form of mental or physical disorder. Today, pornographic films can be sold or rented on DVD, shown through Internet and special channels and pay-per-view on cable and satellite, and in adult theaters. Typically, fisting does not involve forcing the clenched fist into the vagina or rectum; this is a practice called punching. A smotherbox gives a momporn more dramatic experience . In Japan, point of view pornography is referred to as hamedori . Smotherboxes are usually custom made pieces of furniture that may have a special significance for their users. As well as traditional attraction, the topic also incorporates feederism and gaining, where sexual gratification is obtained via the process of gaining body fat.