guardhouse lawyer

guardhouse lawyer

One who acts knowledgeable about something one actually knows little about. Stop being a guardhouse lawyer and giving me advice on how to get a job when you've been unemployed for months too!
See also: lawyer
Farlex Dictionary of Idioms.
See also:
  • (one) could use (something)
  • drive (one) out of office
  • force (one) out of office
  • force out of office
  • give (one) (one's) head
  • give head
  • give somebody their head
  • give someone their head
  • as one door closes, another (one) opens
  • as one door closes, another one opens