No I hear ya... this happens all the time at the grocery store or department stores or anywhere with lots of people. My personal favorite is when two people stop to chat with their carts in the middle of the aisle so no one can get around and when you finally ask them to move they act like it's a big hassle or they just don't move at all.

Or people with unruly kids... the kids are running amok in the store being obnoxious and the parents just stand there like idiots.