It may be used hot gay sex as foreplay, or as an alternative to sexual 3d hentai penetration. This may relate to fetishes such as voyeurism or cuckolding. Especially popular in post-World War 2 porn milf Japanese culture. It is used, for example, at fertility clinics to stimulate sperm donors. Unlike erotic films, pornographic films contain explicit sexuality and do not claim any artistic merit. While bondage is a very popular variation within the larger field of BDSM, it is nevertheless sometimes differentiated from the rest of this field. As of 2013, little analysis of this paraphilia has been reported in medical literature. The current record is held by Lisa Sparks who had sex with 919 men on October 16, 2004 in Warsaw, Poland as part of the Third Annual World Gangbang Championship and Eroticon 2004. Individuals are also sometimes abbreviated when referred to in writing, so a dominant person may be referred to as a Dom for a man, and a Domme for a woman. Other possibilities are possible, such as a man having sex with two women who are having sex with each other. When he is in position the cover is closed. Examples include the Girls Gone Wild and Girls Who Like Girls Series. Lucky Pierre is slang for a person performing both receptive and insertive anal and/or vaginal sex simultaneously during a threesome, being positioned between the two partners. The object or situation of interest is called the fetish; the person who has a fetish for that object/situation is a fetishist. This stop and go build-up, known as edging, can achieve even stronger orgasms. A variation on this is to place the fingers and thumb on the penis as if playing a flute, and then shuttle them back and forth. Such films continued to be produced but could only be distributed by underground channels. As a result, little in history was documented to give an accurate description of how female homosexuality is expressed. It is suggested that much of the obscurity and the uncertainties about female ejaculation are related to mixing up these two phenomena.
