Wife is in bed when her husband joins her. She's in a night gown but nothing inappropriate is exposed and nothing happens.
A man discusses with group (therapy) that he masturbates 17 times. It is mentioned that a woman has frequent she with random men. A married couple discusses they haven't had sex for 2 months.
Husband is on top of his wife, and they are having sex. You don't see nudity but his wife is moaning so it's obvious they are having sex.
A married woman flirts with a man who is not her husband. Soon after they meet in his hotel room where he caressed her, but leaves quickly.
A man is arrested while urinating outside for indecent exposure. No nudity.
A man takes a shower behind frosted glass. No nudity is seen.