About 30 years ago (1985) when I lead a group of 141 students from Singapore to the US, we went to a nudist beach in California.
We were told that everyone has to be naked in order to walk on the beach. Most of us were so shy we didn’t go but two older guys went.
When they returned to the hotel that evening, we asked them how was the experience. They said everyone on the beach laughed at them, especially the women.
One of us very quickly said “oh is it because you guys have the smallest dicks they ever saw?”
Their answer was “no, its because we were the only two guys that walked around with our dicks erected!”. Its apparent that nudist beach is so common there no men ever erect anymore.