It's not enough their food is making you fat, now they're showing you how fat you are. They probably think you'll buy some low fat items while your there. I once while standing in line at the checkout counter had a couple behind me ask if they could go in front of me because they were in a hurry. I politely explained that I too was in a hurry and didn't normally spend my day in line at the checkout counter either. Finding the fastest moving line is always a gamble.
Couples cheat at standing line.
If they forget something one runs back and gets the item. Us single people have a choice, either lose our spot in line or not enjoy the item we forgot. I usually stay in line. Supermarkets today are for the most part larger and cleaner but no matter how many variations of a product they carry, they never seem to have enough checkout counters.