Celebrity sex tapes are amateur or professionally-made recordings of sex acts, as performed by a celebrity and their partner. Bisexual DVDs sell much better online than in adult video stores, possibly due to customers in stores feeling embarrassed to buy them. It has also been recommended as a form of foreplay or safer sex. Softcore gay pornography also exists; it at one time constituted the genre, and may be produced as beefcake pornography for heterosexual female and homosexual male consumption. Watersports pornography features sexual activities involving urine, such as golden showers. The milf fuck stigma of being gay or labeled as such has steadily eroded since the Stonewall riots began the modern American gay rights movement in 1969. Shibari is a Japanese word that literally means to tie or to bind. However, bisexual pornography is often placed near the gay section in adult video stores, since many consumers are gay men. Interracial pornographic films have experienced an explosion in videos gays popularity, becoming one of the fastest-growing and biggest-selling genres. This may relate to fetishes such as voyeurism or cuckolding. BDSM actions can often take place during a specific period of time agreed to by both parties, referred to as play, a scene or a session. Double Stuffed , Double Vaginal , or Double Anal pornography involves the penetration of one orifice by two penises or other objects. Normal quantities of ejaculate range from 1.5 to 5.0 milliliters . Comic books often featured characters being tied up and tying others up, particularly in damsel in distress plots. Lolicon and its contribution to the controversy regarding the regulation of pornography of depicting hentai movies minors that don’t exist has been a major issue for free speech in and outside of Japan. The term applies to the depiction of the act rather than the act itself, and so does not include live exhibitions like sex shows and striptease. The term lesbian is also used with regard to sexual identity or sexual behavior, regardless of sexual orientation, or as an adjective to characterize or associate nouns with female homosexuality or same-sex attraction.