'Fool's' in the Bible

A fool's wrath is presently known: but a prudent man covereth shame.

A fool's lips enter into contention, and his mouth calleth for strokes.

A fool's mouth is his destruction, and his lips are the snare of his soul.

A whip for the horse, a bridle for the ass, and a rod for the fool's back.

A stone is heavy, and the sand weighty; but a fool's wrath is heavier than them both.