The related term twinkle-toes, which implies that a man is effeminate, tends to be used in a derogatory manner. Even though the performers who perform in these films typically appear on many reality websites within a short span of time, most of these websites claim that each of them is an amateur. The term hentai is never used in this lesbian hentai context in Japanese. Unlike the traditional definition of the term, in fetish usage a cuckold is complicit in their partner sexual infidelity and takes masochistic sexual pleasure in it. A sub-set of vaginal fisting attempts to photograph the female cervix immediately after the fist is removed from the now-gaping vagina. The term is a slang word that originated in the gay community and comes from the equestrian term bareback, which refers to the practice of riding a horse without a saddle. As in B/D, the declaration of the Top/Bottom may be required, though sadomasochists may also play without any Power lesbian milfs Exchange at all, with both partners equally in control of the play. Shibari is a Japanese word that literally means to tie or to bind. Performers are usually clean-shaven, thinner and more effeminate than ones in mainstream gay pornography. Sometimes special furniture is used, such as a queening stool or smotherbox. Depictions of male and female masturbation are common in pornography, including gay pornography. Mammary intercourse is said by Alex Comfort to produce gay twinks 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. It may be used as foreplay, or as an alternative to sexual penetration. A variant of A2M is ATOM where a performer inserts his penis directly from one recipient anus into a second recipient mouth. 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.