I was taking a cab somewhere last night and didn’t have any small bills on me. The ride ended up being $5.90, so I had the cabbie a 20 and ask for $13 back. He didn’t have any 1’s handy, so he had to dig into his stash, but finally handed me four bills back. As I’m about to get out of the car, I spread the bills and notice they’re all 1’s! I mention this to the cabbie and he mumbles something about forgetting to give me the $10 and hands me two 5’s. grrr - oh well, at least I caught it…