Proverbs 26:9-11

New International Version - UK

⁹ Like a thorn-bush in a drunkard’s hand
    is a proverb in the mouth of a fool.
¹⁰ Like an archer who wounds at random
    is one who hires a fool or any passer-by.
¹¹ As a dog returns to its vomit,
    so fools repeat their folly.