marge: Ok so the rules don;t apply tio you, right oh!
"Now, would you mind explaining why you regard fellow shoppers as 'the great unwashed'?? You sound like an arrogant tory snob to be fair. " - it's not my phrase, it's a general euphemism for the public, can't believe you've never heard it before, it's just hyperbole, nothing bad is meant by it.
https://www.phrases.org.uk/meanings/the-great-unwashed.html