I have no problem with that!
My petty irritation is that in my local shop they buy scratchcards and alcopops, then chat to the lassie behind the counter, play with their mobile phone(always the very latest £200 one), brusquely deny little Kelly-Chantelle-Marie-Britney whichever overpriced sweet they are thrusting in the direction of the counter with a Vicky Pollard-esque expression.
It's not that I care about the scrounging tart or her doomed microchip laden brat particularly,I just want to buy my 8 cans of Carlsberg and GTF home after my work!!