Throughout teen gay history, women have not had the same freedom or independence to pursue homosexual relationships as men, but neither have they met the same harsh punishment as homosexual men in some societies. The industry generally refers to such films as adult films, which is part of adult entertainment. 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. Clothed female, naked male pornography features naked men and clothed women; typically, the women humiliate and abuse the men hentai porn or perform fellatio and/or handjobs on the men. Sexual relations between women have been illustrated as well as narrated, but much of the written material from the early modern period has been destroyed. The loose and direct camera work often includes tight shots of the genitalia, unlike some traditional porn. These styles are much closer to the style of bondage scenes gay twinks in mainstream television. Masturbation is the self-sexual stimulation of the genitals for sexual arousal or other sexual pleasure, usually to the point of orgasm. 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 cartoon porn comics and anal ejaculations. New York photographer Irving Klaw also published illustrated adventure/bondage serials by fetish artists Eric Stanton, Gene Bilbrew, Adolfo Ruiz and others. Interactive pornography, available in CD-ROM and DVD format, allows the viewer to select the particular acts performed at any one time, sometimes with the camera providing a first person view. Bukkake is a sex act portrayed in pornographic films, in which several men ejaculate on a woman, or another man. In Japan, point of view pornography is referred to as hamedori . Cum shots typically do not appear in girl-girl scenes and orgasm is normally implied horny milfs by utterances, cinematic conventions, or body movement. Content featuring male Naked Girls bisexuality has been a growing trend since the advent of internet pornography.