In the gay pornography 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. New York photographer Irving Klaw also published illustrated adventure/bondage serials by fetish artists Eric Stanton, Gene Bilbrew, Adolfo Ruiz and others. Clothed male, naked female is one-sided female nudity in which one or more females are nude while one or more men are clothed. The fantasy is typically based around one or more larger beings dominating a smaller being. While wearing diapers, a diaper fetishist generally experiences a comforting feeling. Internationally, hentai is a catch-all gay movies term to describe a genre of anime and manga pornography. Some aspects of the research community distinguish between female ejaculation and what is colloquially known as squirting or gushing. Being forced to wear diapers as a form milf xxx of lesbian hentai humiliation is sometimes a behavior encountered in sexual masochism. It is also followed by dedicated industry publications and trade groups as well as the mainstream press, private organizations , government agencies, and political organizations. Hentai narrow Japanese usage and broad international usage are often incompatible. The activity is done by itself or as a part of or prelude to other activities which many times involve sex. In humans, females generally have more round and voluptuous buttocks, caused by estrogen that encourages the body to store fat in the buttocks, hips, and thighs. A person may be sexually penetrated multiple times simultaneously. This type of pornography is almost exclusively hentai, as true hermaphroditic humans are not fertile and are not usually found in nature. Following the introduction of the Motion Picture Association of America film rating system, independent animation producers attempted to establish an alternative to mainstream animation. Top and dominant are widely recognized for those partner in the relationship or activity who are, respectively, the physically active or controlling participants.