Hardcore pornography is pornography that depicts penetration or extreme fetish acts, or both. The name is a reference to gonzo journalism, in which the reporter is part of the event taking place. Gay-for-pay describes male or female gay twink porn actors, pornographic stars, or sex workers who self-identify as heterosexual but who are paid to act or perform as homosexual professionally. The porn industry and viewing public were shocked by the then-taboo spectacle of a white woman having sex with a black man. The rise of the Internet in the late 1990s and early 2000s similarly changed the way pornography film was distributed and furthermore complicated the censorship regimes around the world and the legal prosecution of obscenity. It is suggested that much of the obscurity and the uncertainties about female ejaculation are related to mixing up these two phenomena. Its primary goal is sexual arousal in its audience. Since the 1980s, many practitioners and organizations have adopted the motto safe, sane and consensual, commonly abbreviated as SSC, which means that everything is based on safe activities, that all participants be of sufficiently sound/sane mind to consent, and that all participants do consent. As of 2013, little analysis of this paraphilia has been reported in medical literature. A variant of A2M is ATOM where a performer inserts his penis directly from one recipient anus into a second recipient mouth. Watersports pornography features sexual activities hentai sex involving urine, such as golden showers. It has also been recommended as a form of foreplay or safer sex. Several hundred exclusively pegging films were produced, as well as twice as many bisexual and straight films with strap-on scenes. Urolagnia is a form of salirophilia in which sexual milf xxx excitement is associated with the sight or thought of urine or urination. A sub-set of vaginal fisting attempts to photograph the female cervix immediately after the fist is removed from the now-gaping vagina. Jerk off instruction features a performer encouraging or instructing the viewer to masturbate, often culminating in a countdown at the end of which the viewer is invited to induce orgasm.