Heaping glowing coals on another person's head is usually misunderstood and comes to nothing because the other person knows just as well that he is in the right and has also given some thought on his own part to heaping coals.
Since I've become a central banker, I've learned to mumble with great incoherence. If I seem unduly clear to you, you must have misunderstood what I said.
The writer who neglects punctuation, or mispunctuates, is liable to be misunderstood for the want of merely a comma, it often occurs that an axiom appears a paradox, or that a sarcasm is converted into a sermonoid.