For me it would be the fat waitress. If she is hot and good, that is just an added bonus, but when I'm somewhere eating usually the looks of the waitress have nothing to do with how I tip.
Although a while back I went to Hooters with a buddy. Our waitress was a smoking hot Asian babe and she gave us the best service I have ever had. When I would use a paper towel and set it down she would show up out of nowhere, take the dirty towel and tear a new one off the roll for me. She did everything but feed us.
