At seven
I was invited to go to a swimming pool with a friend and her family. I remember being really excited about getting to play in a real pool. Per the admittance requirements, we all rinsed off in the locker room and waited in line. One by one, we stuck our arms out so that a park district employee could rub his or her fingers on our forearm to ensure our cleanliness. The whole thing sounds crazy now. But those were part of the rules, I guess.