Anti-pornography psychologist Ana Bridges and colleagues conducted a content analysis of best-selling heterosexual pornographic videos showing that over 96% of all scenes concluded with a male performer ejaculating onto the body of his female partner. The term has as its origins Frantz Fanon epidermal schema and Edward Said Orientalism. Exhibitionist pornography features performers, usually female exposing themselves in public and spans simple flashing to public sex. The exact source and nature of the fluid continue to be a topic of debate among medical professionals, which is also related to doubts hentai movies over the existence of the G-Spot. In the context of consensual erotic activities, sadism and masochism are not strictly accurate terms; there is a significant difference from the medical or psychological gay bear porn usage of both terms. Pegging is a recently invented word which features a woman penetrating a man with a strap-on dildo. Futanari, Hentai females with a penis. Pornographic big tit milf films or sex films are films that present sexually explicit subject matter for the purpose of sexual arousal and erotic satisfaction of the viewer. There are currently no known laws forbidding the crushing of objects and insects, however the production or trade of crush erotica involving live vertebrates is condemned by animal rights activists and is illegal in many countries, including the United States and Great Britain. As amateurs in a single segment of a multi-part video, the actresses are typically paid only about 50,000 yen . Bukkake, Gokkun, Omorashi, and tentacle erotica are few uniquely Japanese genres known to western viewers. Foot fetishism, foot partialism, foot worship, or podophilia is a pronounced sexual interest in feet. Through the 1990s, mainstream movie and television actors have been more willing to portray homosexuality, as the threat of any backlash against their careers has lessened and society acceptance of gay and lesbian people has increased. For other scenes, particularly in established relationships, a safeword may be agreed to signify a warning rather than explicit withdrawal of consent; and a few choose not to use a safeword at all.