Inconsiderate mum who stands in the School (only) doorway nattering to her mates and not getting out of the way, ususlly with a huuuuge pram, several scooters and assorted toddlers milling around. They are complaining about the hired help, manicures, tennis coaches or their hubbies not taking them to the Maldives this year.
Even when they can see you running to the front door, in heels and suit, dragging your briefcase, to throw child through before door is closed at 9am sharp (after which you are in the late book and have to sign it and come up with a plausible excuse). Do they get out of the way, non.