Ha - major pet peeve of mine. Its even worse if they're elderly and have their husbands with them - because then they get to yell at him the entire time to boot.
Mothers and children at fast food places during lunch hour. Working men have to get in a get out. Go to lunch at 11 or 1.
I'll go you one even better - geezer women at the bank during the lunch hour. They'll waste three tellers for 15 straight minutes while tracking down an 87 cent discrepancy that was their mistake in the first place. I was once so disgusted I yanked a few bucks out of my pocket and offered them up if the old bat would give up her stupid quest.
LOL. I almost did this once in a supermarket, while some lady was searching through her changepurse for the proper number of pennies.
Look, here's a buck, just keep the change and get out.
SD