I am annoyed by the people at B.J.'s Wholesale Club who keep going up to the free sample tables so they won't have to buy lunch.
I can't stand the Stroller Brigade Mamas with those biga-- strollers that are the size of a Miata who think they always have the right of way because they have a baby stroller.
Thud as biga-- stroller runs over old lady..."Oh dear, did I run something over? I hope it didn't wake Taylor up from her nap!"
I have two kids so of course I've used a stroller in the past and I'm happy to say I've never caused bodily harm to any innocent onlookers!
Also, people who choose to pay by check and then don't even get their checkbook out until the clerk gives them their total (whereas I have everything filled out but the total and signature) and then fumble around in their purse looking for their driver's license. "What, you want to see ID? How unusual!"