A study of 164 males in Finland from two SM clubs found that 18.2% had engaged in coprophilia; 3% as a sadist, 6.1% as a masochist, and 9.1% as both. 18% of heterosexuals and 17% horny milfs of homosexuals in the study pool had tried coprophilia, showing no statistically significant difference between heterosexuals and homosexuals. No causal relationship is known between masturbation and any form of mental or physical disorder. Its gain in prominence has been attributed to its depiction in the film Pecker, which was released in 1998. A study of the condom usage habits of New Zealand sex workers said that they offered various safe sex alternatives to vaginal sex to clients who refused to wear a condom. As a form of non-penetrative sex, it can be done for its own enjoyment or as foreplay. A 2009 study found that heterosexual male fat admirers preferred females that were clinically overweight and rated both overweight and obese women more positively than slighter individuals. Breast fetishism is a paraphilic sexual interest focused on female breasts . The loose and direct camera work often includes tight shots of the genitalia, unlike some traditional porn. Production of such films was profitable, and a number of producers specialised in their production. A celebrity can fight the release in court to maintain deniability while still enjoying the career gay twink porn benefits. While hentai videos wearing diapers, a diaper fetishist generally experiences a comforting feeling. It is also referred to as anal–oral contact and anal–oral sex, or colloquially as rimming or a rim job, and may be performed by or on people of any sexual orientation for personal pleasure or as a form of erotic humiliation. 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.