Proverbs 26:9-11

New Century Version

⁹ A wise saying spoken by a fool
    is like a thorn stuck in the hand of a drunk.

¹⁰ Hiring a foolish person or anyone just passing by
    is like an archer shooting at just anything.

¹¹ A fool who repeats his foolishness
    is like a dog that goes back to what it has thrown up.