The film centers around a man who fails to bring his girlfriend to orgasm. Lots of talk about sex, mostly about performance and orgasms and how to please a woman. Some of the discussion uses euphemisms.
A man and woman have sex, no nudity.
A man gets in bed with a woman. It is implied that they have sex.
Two girls kiss briefly.
A gynecologist shows two men a chart of the vaginal area. Mostly they talk about how to find the clitoris on a woman.
A man and woman have sex, no nudity, lots of moaning.