At the high-school nude swim party, Bobby’s 12-year-old brother Sandy is seen briefly. He wears just a facemask so he can look at the girls underwater.
When the gang decide to cross a river, the boys split in two groups. Those who can’t swim use a small boat, and those who can, strip naked and put their clothes in the boat. Most of the boys have rear nudity but there is also some brief frontal.