That was me. They talked me into a fluoride treatment after a polishing. I figured I haven't had one since grade school, so why not. When she got done, she tells me not to eat anything until I remove the treatment by brushing it off...FOUR HOURS LATER. I hadn't eaten anything since 5 pm the night before, and now had to wait until 2pm.
But I got a cheeseburger & fries for my efforts.