The man relayed this story to his wife, and shaking his head in doubt said, "I may not be the smartest man in the world, but I don't see how putting a cherry bomb in a can next to my ear is going to help!"
His wife agreed, and they drove to Missouri together for a second opinion. Surprisingly enough, when they told the second doctor why they'd come, he asked them where they were from, and then told them to buy a cherry bomb, put it in a can, and for the husband to hold it next to his ear and count to ten.
Deciding that both doctors couldn't be wrong, the couple went home, lit a cherry bomb and put it in a can. The husband held the can up to his ear and began to count: "1, 2, 3, 4, 5...", at which point he paused, placed the can between his legs and counted on his other hand: "6, 7, 8..."