(as) common as dirt

(as) common as dirt

Lacking in manners or refinement. I can't believe he just put his elbows on the dinner table like that. Why, he must be as common as dirt! Everyone thinks I'm common as dirt just because of the way I talk.
See also: common, dirt
Farlex Dictionary of Idioms.
See also:
  • common as an old shoe
  • (as) common as an old shoe
  • ain’t long enough
  • ain't long enough
  • company manners
  • in the hole for (something)
  • forget (one's) manners
  • forget manners
  • forgotten
  • gentleman of the four outs