Actually in the shop I don't really mind, usually as I am on of the people dawdling around thinking what do I want for dinner tonight. My rant is about supermarket car parks, it seems 90% of people can't park so end up waiting 10 mintues while they take 15 attempts to get in or out of a space. Worst of all is people walking in the middle of the lanes (aisles?) I get people need to take a trolley to their car but walk at the edge do car's can get past.
Actually scratch that, as many people as possible should walk in middle holding cars up as it is always fun to scare the bejesus out of them when you press the horn