Cartoon pornography depicts illustrated or animated fictional characters in erotic and sexual situations. Internationally, hentai is a catch-all term to describe a genre of anime and manga pornography. Works in this genre may explore philosophical, political or social issues. Group sex most commonly takes place in a private milf xxx sex party or semi-public swinger gathering, but may celeb gossip also take place at gay cock massage parlors or brothels or, in some jurisdictions, at purpose-built locations such as sex clubs. New York photographer Irving Klaw also published illustrated adventure/bondage serials by fetish artists Eric Stanton, Gene Bilbrew, Adolfo Ruiz and others. A woman can use a secondary vibrator, between the dildo and her genitals, to get pleasure from pegging. Many fantasies include the macrophile shrinking before a normal sized woman or keeping his or her normal height while the lesbian hentai partner grows in size. Some aspects of the research community distinguish between female ejaculation gay movie and what is colloquially known as squirting or gushing. John Stagliano is considered to have started the gonzo pornography genre with his Buttman series of films. Mammary intercourse is known as titty-fucking, titfuck, or a titjob in the United States, as well as tit wank or French fuck in the United Kingdom - the latter term dating back to the 1930s; while a more jocular equivalent is a trip down mammary lane. The naked appearance of actress Demi Moore in the advanced stage of pregnancy on the cover of Vanity Fair magazine in 1991 marked the beginning of a period which has since seen pregnancy presented by celebrities as a glamorous state of living, while also creating a market for photographers to produce images of pregnant mothers, and for fashion stylists to introduce pregnancy styling to their business. By comparison, gonzo pornography puts the camera right into the action, often with one or more of the participants both filming and performing sexual acts, without the usual separation between camera and performers seen in conventional porn and cinema.