(someone) could sell sawdust to a lumber mill

(someone) could sell sawdust to a lumber mill

Someone is an extremely smooth, charming, or persuasive salesperson, such that they could sell something to those who have no need or use for it. I can't believe you were able to sell an extra 200 units to the hospital. You could sell sawdust to a lumber mill!
See also: could, lumber, mill, sawdust, sell
Farlex Dictionary of Idioms.
See also:
  • Eskimo
  • lumber
  • sawdust
  • (someone) could sell an icebox to an Eskimo
  • (someone) could sell ice to Eskimos
  • talk (one's) way into (something or some place)
  • talk (one's) way out of (something)
  • talk way out of
  • talk your way out of something/out of doing something
  • smoothie