Pay it forward
I went into Subway after work yesterday and I was having THE worst day. My boss yelled at me, my car died on the way in and then I realized I forgot my wallet when I went to pay. I apologized and was turning to leave when the guy working behind the counter took out his own wallet and paid for my sandwich. I told him he didn't have to, but he said we all have those days. He wasn't kidding. I came back to pay him for the sandwich and he refused to take it. So now it's my turn to pay it forward.