In a very cute and funny scene, about 20 boys are naked doing handstands and skinny dipping to show off for the girls who eventually throw their hats to the boys for cover.
5-year-old boy and 7-year-old girl bouncing on a bed, the boy wearing a bath robe and the girl wrapped in a towel. Full rear of the girl and frontal nudity of both as the towel and bath robe fall open whilst they bounce.
A boy wearing only a loincloth does a series of backflips in front of two older girls. The clothing has nothing between the legs, so he is exposed during each flip.