The movie contains sex scenes including menage-a-trois and implications of homosexual behavior but except for breasts it just looks like skin. There is a significant amount of male and female nudity with many clear scenes showing breasts but no genital nudity except one small fraction of a second, usually missed. The confusion of sexual identities is one of the themes of the movie.
Opening sequence shows a quick images of sex scene between two characters. Woman's breasts and butt is seen very briefly few times. It's implied also that she gave him oral sex.
Man involuntarely strips naked, his butt is shown for some time.
A pornographic video is briefly shown. Woman's butt is seen there while she's been bended over desk and slapped with belts (very brief)