Positive Deviance

This week I did an act of positive deviance, and I have to say it felt pretty good. On Saturday I was working at my job at the mall, and during my break I went to get some frozen yogurt. I saw a guy standing in line behind me and thought that would be a perfect opportunity to do something nice. He looked like he was buying about the same amount as me so I figured it would be around the same price. I gave the cashier $7, so it would cover both me and him, and possibly even give her some leftover. I told her to keep the change and use it to pay for his yogurt. She looked at me like I was insane at first and asked if I was sure. The guy also looked at me weirdly but then he said "thank you so much" and I told him no problem and left. It felt kind of strange to just pay for a random person and then leave, but I felt really good about myself. Even though society may view this as deviant and weird, I think it was a really good experience, and in reality I think/hope I made the guy's day just by doing something so simple.