Reflective of its views on sexuality and culture, Japanese pornography delves into a wide spectrum horny milfs of heterosexual, homosexual, and transgender sexual acts in addition to unique fetishes and philias. A celebrity may allow such a recording to surface willingly, as part of a publicity stunt. English adopts and uses hentai as a genre of pornography by the commercial sale and marketing of explicit works under this label. Gloryhole pornography features women performing fellatio on unidentified men through a small hole made in a bathroom divider. Throughout history, women have not had the same freedom or independence to pursue homosexual relationships as men, but neither have they met the same harsh punishment as homosexual men in some societies. Gay-for-pay describes male or female actors, pornographic stars, or sex workers who self-identify as heterosexual but who are paid to act or perform as homosexual professionally. Because the viewing of such films carried a social stigma, they were viewed at brothels, adult movie theaters, stag parties, at home, in private clubs and also at night cinemas. Terminology for roles varies widely within the various BDSM subcultures. Some techniques which may work for one individual can be difficult or uncomfortable for another. Although pornography has usually focused on heterosexuality, due to the prevalence of the heterosexual orientation, explicit gay material has a long history as well, which reaches back to Greek antiquity, if not to prehistory. Both forms of pornography generally contains nudity. Hardcore pornography is pornography that depicts penetration or extreme fetish acts, or both. A sex party is a gathering at which sexual activity takes place. The object or situation of interest is called the fetish; the person who has a fetish for that object/situation is a fetishist. A homosexual threesome would gay movies involve either three men or three women. The term hentai is never used in this context in Japanese. The phrase is commonly found on porn sites.