This professor was giving a free lecture on alcoholism to some old men. The professor gave a demonstration. He took out two empty glasses. In the first glass, he put plain water. In the second glass, he put Jack Daniel's whiskey. He took out two worms. He put one worm in each glass. The worm in the glass of water simply swam around and did all right. But the worm in the glass of whiskey soon curled up and died. The professor looked out over the audience,and said,
"Now the lesson here should be obvious. Can anyone tell me what they have learned from this demonstration?" He pointed to an old man in the front row who had raised his hand. The man stood up, and said, "If you have worms, drink whiskey?"