A few years ago, there were quite a number of hippies walking on the streets in America. One day, a man met up with two of them, one older and the other younger.

He said to the elder of the two,"Pardon me. May I ask you a question? Is this your son or daughter?"

"This is my daughter. "replied the senior hippie.

"I have another question. "continued the curious stranger."Are you her father or her mother?"

雌雄難辨

幾十年前，在美國的大街上可以看到很多嬉皮士。一天，一個人就遇到了兩個嬉皮士，一老一少。

他問年長的那個：“您好，能問個問題嗎？這是您兒子還是女兒啊？”

“這是我女兒。”年長的嬉皮士回答說。

“我還有一個問題，”這個人好奇地追問道，“那么你是她爸爸，還是她媽媽？”