Yesterday, Jodi and I ate at Mexican Villa and we had a waitress that did a great job. She filled our chip basket without asking, took our order quickly and flawlessly, and made herself very available if we needed anything. We ate, paid, tipped well, and left. However, the tipping part stayed on my mind for a while. This is why. I left three dollars on the table as that was all the cash that I had on me. When I used my debit card to pay for the meal (at the checkout counter) I added another $2.54 tip to the slip I signed to bring the total amount of the debited amount to an even $30. I hadn't done the math in my head to find out the percentage...