As a thorn is in a drunkard's hand, which he cannot hold and manage cautiously, but employeth to his own and others hurt, so is a parable in the mouth of fools; as improper and unprofitable, and, by accident, hurtful to himself and others. See Poole on "Proverbs 26:7".
Related Commentaries of Proverbs 26:9
Proverbs 26:9
9 As a thorn goeth up into the hand of a drunkard, so is a parable in the mouth of fools.