Why you should wash your hands frequently...

I work in a small post office. A lady came in yesterday and they first words out of her mouth were, "I just threw up in the bank parking lot!" I of course told her I hoped she was okay, and she explained that she drank some dark cola and that always makes her throw up. (so if you know this....then why.... anyway...) Then as we completed the transaction she handed me a couple of letters to mail and they were spotted with "cola colored" spots. Ok. gross.