From atthumor: Get out!
Me: "Because this is a gas station, and you are trying to use a Burger King coupon. Those don't cover our shitty gas station burgers."
A mother with child came in once with a battle-ready look about her. You know, that look a customer gets when they know they are in the wrong but decide to have a go anyway.
She argued that she shouldn't need to pay the $10 fee for missing her doctor's appointment, because she didn't know the rules. (The appointments are free, but making one and then not showing up will cost you because you are wasting everyone's time and generally being a massive fucknut.)
I told her a) to stop being a massive fucknut, b) that this is a driving school, as evidenced by all the posters on driving and the total lack of hospital decor, c) that the doctor's office is next-door, and d) might I also suggest the optician the next floor down?