My favorite ever nonverbal interaction was the time a mom was pointing to my window, excitedly showing her daughter the 3 kittens that were sitting and looking out. We made eye contact, and she looked briefly embarrassed before I reached down next to me and held up a 4th kitten
Dude at Starbucks just left the crowded store and went βBye everyone,β and every single person in that store said goodbye I literally just met the main character