Various teen boys are shown in differing levels of dressing and undressing throughout the film, no nudity.
A boy is pulled to standing from a bathtub, nudity is implied but not shown.
A young teen boy makes a hand motion indicating that he thought another boy was masturbating in class.
A young man offers to lend his copy of Arabian Nights to his little brother promising it will give him a "hard on".
A young man indicates that he is having an affair with a married woman.
A young boy is ordered by a German soldier to pull his pants down, presumably to prove he is not Jewish, it is not clear if the boy complies.
Boys look at pictures of girls (implied that they're nude). No pictures are shown close enough to see clearly.
Passages of Arabian Nights that can be considered erotic are read aloud.