I work summers at a Country Club, and we have one women whos notorious for ordering food, eating off the toppings, and sending it back saying she didnt get any. Shes so old and arrogant, its easier to just give her more.
But you can count on her being there at the end of the month to scrutinize her bill, and insist 'someone else must have put that on my number, I would NEVER order that'.