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    There was a guy (男人) who had three parrots. He sold it in a shop. One was $5,000, another was $ 10,000 and the third one was $30,000. One man went into the shop and wanted to buy a parrot. He was surprised by their price. Then he asked, "Why are the parrots so expensive (贵的)?"The owner said, "I have trained (训练) them well." The man asked, "What can they do?" The owner said, "The first one can talk. The second one can dance." "How about the third one? He is the most expensive." The man asked. The owner said, "I don't know. He never talks, dances or even makes any noise. But the other two call him 'The Boss'."