Emetophilia pornography involving vomiting and gagging. It is mutual consent that makes a clear legal and ethical distinction between BDSM and such crimes as sexual assault or domestic violence. Gloryhole pornography features women performing fellatio on unidentified men gaysex through a small hole made in a bathroom divider. It concludes these findings suggest that an explanation for fat admiration may be that FAs are rejecting sociocultural naked milf norms of attractiveness. For uncircumcised males, stimulation of the penis in this way comes from the pumping of the foreskin, in which the foreskin is held and slid up and down over the glans, which depending on foreskin length, is completely or partially covered and then uncovered in a rapid motion. The term discipline describes psychological restraining, with the use of rules and punishment to control overt behavior. Women that take on the roles of the giantess within this fetish often find the practice to be empowering and enjoy being worshiped. Men may find stimulation of the anus, rectum, and adjacent organs enjoyable. Examples include the Girls Gone Wild and Girls Who Like Girls Series. As of 2013, little analysis of this paraphilia has been reported in medical literature. This may relate to fetishes such as voyeurism or gay hentai cuckolding. Mammary intercourse is said by Alex Comfort to produce mutual orgasm in women with sensitive breasts , and it was one of the nine substitute exercises for penetrative sexual activities, as detailed in the Paradis Charnels of 1903. Bhabha, Anne McClintock and Kobena Mercer. A homosexual threesome would involve either three men or three women. The term Asiaphile is sometimes used to describe the same phenomenon as is yellow fever . The concept of lesbian, to differentiate women with a shared sexual orientation, is a 20th-century construct. Entacle erotica describes a type of pornography most commonly found in Japan which integrates traditional pornography with elements of bestiality and a fantasy, horror, or science-fiction theme.