Parents on their cell phones when you enter the room to go over discharge instructions....and don't hang up the damn phone to listen. Parents who arrive late for their appointment, then come out of the exam room 10 minutes after being checked in, demanding to know why they haven't been seen yet. Or...arrive 45 minutes early and complain about the wait before it's even time for their appointment. Kid with dirty faces, hands, feet, crusty snotty noses, etc. Seriously? You knew you were coming to an appointment! At the very least, break out the wet wipes!