Examples include the Girls Gone Wild and Girls Who Like Girls Series. This fetish sometimes originates from childhood memories of needing, or of seeing another needing, to urinate. Performers are usually clean-shaven, thinner and more effeminate than ones in mainstream gay pornography. Some BDSM practitioners prefer a code of behavior that differs from SSC and is described as risk aware consensual kink , indicating a preference for a style videos porno gay in which the individual responsibility of the involved parties is emphasized more strongly, with each participant being responsible for his or her own well-being. It is suggested that much of the obscurity and the uncertainties about female ejaculation are related to mixing up these two phenomena. Cuckold fetish pornography that involves a cuckolded husband. Sex parties may be organized to enable people to engage in casual sexual activity or for swinging couples or people interested in group sex to meet, but any gathering where sexual activity is anticipated can be called a sex party. Participants usually derive pleasure from this, even though many of the practices—such as inflicting pain or humiliation or being restrained—would be unpleasant under other circumstances. Starting with milf xxx erotic stories and woodblock prints from before the 20th century, Japanese pornography evolved into distinct subcategories with the media that in addition of pornographic videos and magazines featuring live actors, there is exist categories of pornographic manga , pornographic computer games , and pornographic anime . There were also a very limited number of specialist fetish magazines which featured images of bondage, such as the famous Bizarre magazine published from 1946 to 1959 by the pioneering fetish photographer John Willie, and ENEG Exotique magazine, published 1956-1959. Babysitter pornography features usually teenage girls being exploited and having taboo sex with older, male employers. Homi Bhabha defined the idea of a racial fetish in contrast to the idea of the Freudian sexual fetish which he describes a denial of difference, lesbian hentai where the male sees the female as a castrated male, seeing missing parts rather than a different anatomy.