Often at business meetings we would go out to dinner. Usually when the bill came we would have everyone chip in including tip the amount of money they felt they owed. Some folks had drinks, wine with dinner, and desert. Others may have had only a salad. It was a good judge of character to see who was honest about it. Since this is Slashdot I should mention that we were scientists and engineers so we could do the math. Most the time we would end up with a few extra dollars which would just go for a bigger tip. Occasionally we would be short, and someone would have to fess up about not putting enough in. Good way to see who is trustworthy.