Transgender pornography features performers who cross-dress for sexual gratification, either for themselves or for their partners. For instance, Amateur Allure has a trademark shot where the sexually performing cameraman circles a handycam around the sexually performing model head. Most bisexual porn is made by small production companies rather than the major studios. Rainbow parties were covered on The Oprah Winfrey Show in 2003, and became the subject of a juvenile novel called Rainbow Party. It is typically animated pornography, as the legal age to be featured in a pornographic film in Japan is 18. Urolagnia is a form of salirophilia in which sexual excitement is associated with the sight or thought of urine or urination. Incest itself is largely taboo, and is a crime in many countries. Fisher said that perhaps, the fleshy, rounded buttocks attracted males during rear-entry intercourse. John Stagliano is considered to have started the gonzo pornography genre with his Buttman series of films. Portrayals of lesbians in the media suggest that society at large has been simultaneously intrigued and threatened by women who challenge feminine gender roles, and fascinated and appalled with women who are romantically involved with other women. Internal ejaculation shots are a comparatively recent development 3d hentai in pornography; they are not found in early pornographic films. Bear features a combination of middle-aged, hairy or overweight males. Bukkake pornography involves a performer, gay fuck usually female, onto whom several men or women ejaculate, usually on the face. In the gay pornography momporn industry, which uses amateurs as well as professional actors, the term gay-for-pay refers to actors labeled or believed to be straight but who engage in same-sex sexual activities for money. In the fetish cuckolding subculture, it is most common for the female to take on the sexually dominant role and the male the submissive role, however, female subs, sometimes referred to as cuckqueans, also exist.