A man enters a house and hears sounds of sexual activity, and he discovers another man watching a pornographic video (which we do not see) while riding his exercise bike. On a similar occasion, a man enters a house and hears sounds of sexual activity; he discovers a couple that is still fully clothed.
A man enters a hotel room assuming it is vacant, but discovers a woman, who is seen behind a glass shower door -- the middle is obscured, but her silhouette is still easily seen. Upon seeing the man, she exits the shower presumably nude (we see her from the shoulders up) and calmly greets him.
A woman at a tennis match challenges a man to hit a target with a tennis ball, promising that if he does, she will sleep with him. A woman holds a tennis racket near her crotch in a way that mimics a penis.
Upon seeing a young male tennis opponent, a man questions if he should be exploring masturbation.
A woman asks a man how he feels about "fooling around" before a match; she feels it can help her game -- it is implied that they have had sex when they are seen later. In another pre-sexual moment, a couple encourages each other to "keep it fun and relaxed"; again, sex is implied, but not seen.
A man is exhausted after a night of passion.
Men are seen in a sauna: they are bare-chested and wearing towels around their waists.
A man makes a comment about another man liking men in leather shorts.
A man uses a crude word to ask another man if he is having sex with the woman who is with him.
After discovering another couple in his apartment, a man tells another man that he "might want to change the sheets."
A couple kisses passionately and are trying to remove each others' clothes as they enter an apartment, but then discover another couple inside who are doing similar things.
A man and woman are seen in bed, previous sexual activity is implied, and they kiss.
Two male/female couples are seen in an apartment wearing only underwear while watching television.
A woman uses a crude term to ask a man if he needs to have sex with her.
A man tells a woman she was seen "snogging" in a parking lot. (British expression meaning cuddling and kissing).