A college teacher invited two businessmen(商人) to dinner at his home. One of the two men never went to school and was worried that he couldn't answer other men's questions correctly. But his friend said, "Don't worry, Tom，just do what I do, and don't talk about anything if you don't understand it."

Everything went on quite well, but by the end of the evening, Tom had had a lot of drink, and began to get careless.

One of the guests asked him if he liked Mark Twain, and Tom answered, "It's pleasant, but I likeScotch(苏格兰威士忌酒) better." All the guests in the room kept quiet for a moment, and soon they began to leave.

When the two men were out of the house, the friend said to Tom, "You certainly made yourself a fool because you told Scotch foolishly（愚蠢地）."

"What do you mean?" asked the other man."What was wrong with it?"

"We all know that Mark Twain isn't a kind of drink, "his friend answered, "It's a kind of music."