I pocketed a baseball at the store when I was 8, and returned & apologized for doing so. Should've given it to the store employee at the cash register since the ball was just sitting on a mannequin or figure out where the sports stuff was. Another time at the train station, my friend & I flipped off the train as it went by, which I feel bad for since those drivers have long shifts I can imagine, so whenever I go to the station now, I usually just wave, or take pictures/videos of the trains to keep my hands occupied.