These are so funny because I've had so many!!
One was in church, it was all quiet and DS I think was 3, yelled out excitedly " Mom, that man's Bald!"
I think earlier that week we had read a book and it had something in it about someone being bald and DS had asked about what that meant and we had discussed it. He was just excited to see a bald man in real life.
He also liked to say hello to anyone he could make eye contact with in the store, then if they were responsive start a nice conversation. He had a bad interrupting problem, which we tried to help him with, and he got lots better. He still has a habit of saying "Excuse me" before he starts a conversation with adults.