I have to admitt to becoming quite a super rude pedestrian in the times when I was able to get about walking. Supermarkets were a particular nightmare. I would always take a trolly and use it to barge my way through people. My time of being upright was limited and if I politely waited for the ditherers to get out of the way I would have been on the floor. People may think I am just being rude and impatient (which is at least partly true) but the fact is it's the only way I was going to make it around.