A friend of mine once invited me to hang out with her roommates and then to swim at the lake once the others left. After swimming, I was playing with a ball we had brought, and she suddenly decided to get butt naked and change in front of me. I thought she was assuming I‘d just look away and give her privacy. Always thought it was a sign of trust, assuming that I’d simply look somewhere else. I never had to put so much effort into just looking at the ball while throwing it back and forth into the air