A  circus  owner walked into a bar to see everyone crowded about a table watching a little show. On the table was an upside-down pot and a duck tap  dancing on it. The circus owner was so impressed that he offered to buy the duck from its owner. After some wheeling  and  dealing they settled for $10,000 for the duck and the pot.

　　Three days later the circus owner runs back to the bar in anger, "Your duck is a rip-off! I put him on the pot before a whole audience and he didn't dance a single step!"

　　"So?" asked the ducks former owner, "did you remember to light the candle under the pot?"

Key  words：

circus　（n.）馬戲團

upside-down　（adj.）顛倒過來的

pot　（n.）鍋

tap  dancing　（n.）踢踏舞

wheeling  and  dealing　討價還價

rip-off　（n.）敲詐