Bukkake pornography usually depicts numerous men having sex with one woman, with multiple, usually 10 or more, men ejaculating on the female face. Teacher and Student or Boss and Secretary pornography involves sexualized situations which take place between an authority figure, such as a teacher or boss, and an underling, such as a student or secretary, often fake. They may repeat this cycle multiple times. Real enema shots or videos of true medical situations may violate privacy laws in some countries. But starting with The World Biggest Gangbang , starring Annabel Chong, the pornographic industry began producing a series of naked milf films ostensibly setting gangbang records for most consecutive sex acts by one person in a short period. An orgy is a gathering where guests freely engage in open and unrestrained sexual activity or group sex; and a bunga bunga orgy is an orgy in which participants have sex underwater, such as in a swimming pool or a hot tub. The first film was released in 1980 starring Kay Parker. Bukkake videos are a relatively prevalent niche in contemporary pornographic films. However the genre remains a very small proportion of lesbian hentai the pornographic DVD market; for example at porn retailer HotMovies. Fisting may be performed with or without a partner. Sometimes, asymmetric and often intentionally uncomfortable positions are employed to heighten the psychological impact of the bondage. The surfacing of sex tapes has become so common that some are leaked as a marketing tool to advance or establish a media career. This gay fuck is also the case in many relationships not considering themselves as sadomasochistic; it is considered to be a part of BDSM if it is practiced purposefully. The related term twinkle-toes, which implies that a man is effeminate, tends to be used in a derogatory manner. A pearl necklace is a slang term referring to a sexual act in which a man ejaculates semen on or near the neck, chest, or breast of another person. This is commonly called double anal or double stuffing.