Others may also use vibrators and other sexual devices more commonly associated with female masturbation. As a result, little in history was documented to give an accurate description of how female homosexuality is expressed. Some techniques which may work for one individual can be difficult or uncomfortable for another. In September 2003 the BBC reported on the new dogging craze. Snuff pornography involves the actual death of any of the participants, consenting or otherwise, simulated death is not considered snuff. 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. Body parts including fingers, tongue and penis may be used for anonymous oral, vaginal and/or anal intercourse. 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. A celebrity may allow such a recording to surface willingly, as part of a publicity stunt. Crying pornography that features participating actors crying. It may be used as foreplay, or as an alternative to sexual penetration. The higher pay scale and profile within a production often leads to group scenes where a straight actor only gay twinks tops. Especially popular in post-World War 2 Japanese culture. 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. In addition to mainstream pornography, the popularity of facials has led to creation of its own niche market, like video series that specialize in showing the act. The first film mature milfs was released in 1980 starring Kay Parker. These scenes may either have the cameraman directly engaging in sex or merely gay hentai filming others having sex. Going back at least as far as the Christy twins in the 1970s, depictions of incest and particularly incest between twins has been a feature of gay pornography.