A man is taking a bath in a tub. As he gets out, his penis is discernable in the dim light. Buttocks are also visible.
A man is seen squatting on the floor having a bowel movement. No nudity. You see him grimacing and hear him grunting.
A man rubs his wife's behind. They are interrupted by their son.
People at the beach are seen changing into beach clothes. Moat wrap towels around themselves. A man gets frustrated and drops his towel, exposing himself.
A man wearing just a shirt shakes his penis at his wife. His son comes into the room and he continues to shake it. This scene is from behind so you don't see his penis, but briefly see his butt.
Two young girls are seen naked from behind. Later, one of the girls is seen walking on the sand dunes. Full frontal nudity is shown.