I once went to K-Mart to buy some jeans. A lady and I got to the check-out counter at the same time. I smiled at her and gestured for her to go on ahead. As the cashier was scanning her stuff, lights went off above the check-out counter. It turned out the lady was the 500th shopper of the week! She received some sanitary products like hand soap and sanitizer. So in essence, nice guys will always have dirty hands.