I shop most days of the week for old people, and wryly smile to myself as I breathe the air of a hundred people being blown down to me whilst queueing... If it didn't mean I couldn't get their shopping, I'd do a "midnight express" on them!!
The cashier today angrily shouted at the guy behind me for being too close. She was shocked when I said I don't mind!
As Bill hicks said, "we are free to do what we are told".