Like a thornbush in a drunkard's hand is a proverb in the mouth of a fool. (NIV)
Like a thorn that goes [without being felt] into the hand of a drunken man, so is a proverb in the mouth of a [self-confident] fool. (AMP)
As a thorn goeth up into the hand of a drunkard, so is a parable in the mouths of fools. (KJV)