In the fetish cuckolding subculture, it is most common for the female to take on the sexually dominant role and the male the submissive role, however, female subs, sometimes referred to as cuckqueans, also exist. To avoid soreness from this resulting friction, some may prefer to use a personal lubricant, masturbation cream or saliva during masturbation. Clothed male, naked female is one-sided female nudity in which one or more females are nude while one or more men are clothed. Sub-genres can also be classified into the characteristics of the performers or the type of sexual activity on which it concentrates, and not necessarily hentai movies on the market to which each sub-genre appeals. The current public acceptance of celebrities with sex tapes is speculated by Joe Levy, executive editor of Rolling Stone, to be due to the easy availability of pornography, as well as couples more commonly making their own tapes due to the prevalence of video cameras. Clothed female, naked male pornography features naked men and clothed women; typically, the women humiliate and abuse the men or perform fellatio and/or handjobs on the men. In Japan, point of view pornography is referred to as hamedori . Women who perform in lesbian pornography often do not consider gay twinks themselves lesbian or bisexual. The warm sensation felt when urine trickles on the body seems to give very relaxing and pleasurable feelings to the person. Most bisexual porn is made by small production companies rather than the major studios. Women with women Main article: Lesbianism in erotica: Lesbianism in contemporary pornography Lesbian or girl-girl pornography features women engaged in sex together, but is typically aimed at a male audience. In the West, masturbation in private or with a partner is generally considered a normal and healthy part of sexual enjoyment. Masturbation is the self-sexual stimulation of the genitals for sexual arousal or other horny milfs sexual pleasure, usually to the point of orgasm. Portrayals of lesbians in the media suggest that society at large has been simultaneously intrigued and threatened by women who challenge feminine gender roles, and fascinated and appalled with women who are romantically involved with other women.