Proverbs 27:3

3. A stone is heavy The words “heavy” and “heavier” are employed, in this verse, in both a literal and a tropical sense. See an example of the same use in Matthew 8:22: “Let the dead bury their dead.”

A fool’s wrath The vexation of a fool; that is, the vexation of which he is the cause vexation or trouble by a fool. Zockler understands it of the arrogance and ill temper experienced by the “fool” himself. Such ill temper is a burden heavier than stone or sand.