Not What They Ordered
They get to your counter and look at you, you can tell this is it, the dreaded confrontation. You’re tired and it’s the worst day for this kind of thing. They open their mouth and go on the offensive, telling you that there’s something terribly wrong with their drink. It’s either not what they ordered or it’s not good enough.
But then they do something that you didn’t expect. It makes them the worst customer on this list.