A patient in a lunatic asylum¹ was fishing in a dry pond. A nurse passed by and tried to tease him.＂How much fish have you caught?＂The nurse asked.＂Are you insane? Didn’t you notice there is no water in the pond?＂The patient quipped.

疯人院里有一个精神病患者守着一个干涸了的池塘在钓鱼。一个护士从旁边经过，看到这一幕觉得很好笑，边走上去逗他。“你钓了几条鱼啊？”护士问。这病人嘲弄说：“你有病吧，没看见这池塘里没水吗？”