Eating at nice restaurant with my entire family. When we finished the meal the waiter came out with a dessert and said that someone across the restaurant paid for our entire meal. I was shocked, I looked around and I think I might know who it was, but they were already gone. That was probably a $150-$200 dollar check. I'm still shocked to this day.
A few years ago, I was in the drive through of a Starbucks on the east side of Seattle. A very shiny Porsche 911 was in front of me, and I was kind of rolling my eyes. Who needs to drive a Porsche to Starbucks? Douchebag.
Whoever it was paid for my order. Kind of a record-scratch moment, just completely changed my mood and was a good reminder to not be negative for no reason.