In bygone days, a thin man insulted a large man. The large man challenged his tormentor¹ to a duel² with pistols.

On the day of the duel a debate ensued about the unfair advantage held by the thin man because he was a much smaller target. Finally the thin man came up with a solution.

"Let the outline of my figure be chalked upon your body," he said to his opponent, "and any shots of mine that hit outside the chalk lines, we won't count."