A few days ago, I bought a coffee and $10 in gas at a gas station. Yummy mocha in hand, I happily went back to my car, and drove off. That's right. Didn't put the gas into my tank. Didn't notice until that evening, when I notice I'm still on empty. Wait a minute! I bought gas this morni...oh. crap. The next morning, I go back (figuring there's no way to get the $10 back, but I won't know until I ask), and say "Hi. I did something really stoopid yesterday morning..." One of the attendants pulls a receipt down from where it was taped to the window and says "I saw you drive off without pumping - I credited your card back" - and hand me the credit receipt. I said they just won a loyal customer! wow.