Proverbs 26:7-9

Amplified Bible

⁷ 
Like the legs which are useless to the lame,
So is a proverb in the mouth of a fool [who cannot learn from its wisdom].
⁸ 
Like one who [absurdly] binds a stone in a sling [making it impossible to throw],
So is he who [absurdly] gives honor to a fool.
⁹ 
Like a thorn that goes [without being felt] into the hand of a drunken man,
So is a proverb in the mouth of a fool [who remains unaffected by its wisdom].