Had a friend, who is now deceased, that used to deduct the tax from the bill and then tip on the amount of the food only. I always thought that to be weird.
People are very strange. I just got back from work and this lady was a royal B. She not only orders while still holding her cell phone the entire time and periodically talking to whoever was on the other end... She was arguing with the manager about a special we had, assuming that we can read her mind to understand what the heck she wanted. Then she asks a billion questions, all the while continuing to talk on and off on her cell phone. She finally places her order like 5 minutes later... and she asks us to pull everything out super early because she doesn't want it overcooked. Mind you, our oven is designed to "convey" on the belt at a speed that thoroughly cooks the products. Not letting the belt do this results in undercooked food... But whatever. Whatever the customer wants, right? So luckily I had a delivery to go on and I was hoping by the time I'd come back that she would be gone. Well... I walked in to her pitching a fit... Apparently the breadsticks that my manager pulled out HALFWAY through the cooking process were STILL too "overcooked" for her... She was ridiculous. Luckily we don't get those often. (she looked like she came straight from the trailer)