In pornography, depictions of lesbian sex form a popular subgenre, directed toward a male heterosexual and female homosexual audience. The fundamental principles for the exercise of BDSM require that it should be performed with the informed consent of all involved parties. Voyeur or peeping Tom pornography is usually more staged with the subjects aware of the cameras, milf fuck sometimes openly including this exhibitionist awareness. Erotic literature and pornographic films have been devoted to the sexual uses of glory holes. Some productions are noted for sophisticated and/or experimental storytelling and animation techniques. The films were financially successful, winning AVN Awards for the best selling pornographic films of their year; however the events were effectively un-officiated and the record breaking claims often misleading. Others may also use vibrators and other sexual devices more commonly associated with female masturbation. A sexual fetish may be regarded as an enhancing element to a romantic/sexual relationship achieved in ordinary ways or as a mental disorder/disorder of sexual preference if it hot gay sex causes significant psychosocial distress for the person or has detrimental effects on important areas of their life. Some actors who are actually gay or bisexual will be marketed as straight to appeal to the allure of the unattainable, because straight men are virgins to sex with other men, and as in most gay male settings, the young, the muscular, and the unfamiliar are more sought.. When sexual activity is centered on one of the threesome, then the activity may be hentai sex described as a gang bang of the person. When all regions of the face are included, facial cum shots comprise approximately 62% of scenes where external ejaculation occurs. For other diaper fetishists, simply wearing a diaper, the bulking feeling and crinkling sounds associated with it, is enough to cause the fetishist a form of erotic pleasure or sexual arousal. Fisting involves the insertion of one partner entire hand into a vagina or the anal cavity.