My RAK involved a pair of bar guests who were walking into the restaurant and on the way to the front door, one of them dropped a $100 bill on the ground unknowingly. There were two people walking several feet behind them who noticed this. They picked up the bill and returned it to the person who dropped it. Both parties entered the lounge and sat on opposite sides of the bar. The person who was returned the dropped money told me that he wanted to buy lunch for the couple that returned the money. Then I bought their lunch for being kind for picking up the other tab. They were quite appreciative and were very happy to PIF.