From the “Clues for the Clueless (Social Distancing Edition)” Dept:
If you happen to be in a narrow aisle at the shoppes where your trolley is parked in the centre of the aisle and pointed opposite to the direction of the three arrow signs within 1m of the trolley whilst you're messing about with your phone completely oblivious to the other shoppers nearby…that would be exactly the WRONG TIME to cop an attitude toward those very same shoppers who comprehended the meaning of the arrows…