Rough as a cob.
More Traditional Proverbs:
Never kick a cow chip on a hot dayTraditional
If you defy an enemy by doubting his courage you double it.
Traditional
Seeking happiness is a straight way to misery.
Traditional
Thou hast a head and so hath a pin.
Traditional
Laugh before breakfast, you'll cry before supper.
Traditional
A brother is a friend God gave you a friend is a brother your heart chose for you.
Traditional