Fisting pornography features the insertion of an entire hand into a performer vagina or anus. It is commonly depicted in pornography, but very rarely in mainstream cinema. As a result, little in history was documented to give an accurate description of how female homosexuality is expressed. Others may also use vibrators and other sexual devices more commonly associated with female masturbation. Such films continued young gay porn to be produced but could only be distributed by underground channels. Sadomasochism does not imply enjoyment through causing or receiving pain in other situations . There is also some evidence that pornography can be used to treat voyeurism. The object or situation of interest is called the fetish; the person who has a fetish for that object/situation is a fetishist. 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. The term Asiaphile anime hentai is sometimes used to describe the same phenomenon lesbian milfs as is yellow fever . Lesbian pornography made for women is usually made by women, and usually features women who identify as lesbian or bisexual. Sexologist Alfred Kind suggested that the buttocks is the primary sexual presentation site in primates. Failure to honor a safeword is considered serious misconduct and could even change the sexual consent situation into a crime, depending on the relevant law, since the bottom has explicitly revoked his or her consent to any actions that follow the use of the safeword . But starting with The World Biggest Gangbang , starring Annabel Chong, the pornographic industry began producing a series of films ostensibly setting gangbang records for most consecutive sex acts by one person in a short period. These scenes may either have the cameraman directly engaging in sex or merely filming others having sex. Watersports pornography features sexual activities involving urine, such as golden showers. A few extremely flexible males can reach and stimulate their penis with their tongue or lips, and so perform autofellatio.