15-20%

As with most people, I've done my stint of working in the food service industry. It completely sucks. We all have friends that bus tables or are servers, and we hear endless stories about minor celebrities, or the customers from hell. These people put them all together to create this brilliant site. Luckily, I didn't show up in their Shitty Tipper Database (a great place to see the dining habits of some celebs).