Male rear nudity is shown.

A doctor inserts his finger quite unexpectedly into a man's rectum, in order to check his prostate. Not graphic.

A man is having sex with a woman. Only the man's buttocks are shown.

A man uses a soap bar to pleasure himself in the shower. It is implied that he inserted it into his rectum.

A doctor fists a man, in order to check his rectum & prostate. His buttocks are briefly visible from the side only.