Definition of as common as muck in English:

as common as muck

phrase

British
informal
  • Of low social status.

    • ‘You know, Ramirez, sometimes you seem as common as muck, and other times you're the most princely person I've met.’
    • ‘Sean Connery comes from the East of Scotland, with a 'posh' kinda tone, but we are from the West side and sound as common as muck.’
    • ‘She is posing as a lady but she is really as common as muck.’
    • ‘He's as common as muck, and God help him if he has to perform state duties - he can't stand foreigners.’
    rabble, scum, refuse, garbage, rubbish, trash, vermin, the lowest of the low, in the underclass, the dregs of society, good-for-nothings, undesirables
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