English Original
A noted sex therapist, aware that people often misreport their sexual frequency, devised a test to determine the truth. To validate his theory, he gathered a large audience in an auditorium. He proceeded down the line, asking each person to smile. Based on the breadth of their smiles, he accurately guessed each individual's frequency of sexual activity.
The last man in line was grinning from ear to ear.
"Twice a day," the therapist guessed. The man said no.
"Once a day, then?" Again, no.
"Twice a week?"
"No."
"Twice a month?"
"No."
Finally, the therapist asked, "Once a year?" The man said yes.
Frustrated that his theory had failed, the therapist demanded, "What the heck are you so happy about?"
The man replied, "Tonight's the night!"
中文翻译
一位著名的性治疗师意识到人们常常谎报自己的性行为频率，于是他设计了一个测试来探明真相。为了验证他的理论，他在一个礼堂里聚集了一大群人。他沿着队列依次让每个人微笑。根据他们微笑的幅度，他准确地猜出了每个人的性行为频率。
队列中的最后一个人笑得合不拢嘴。
治疗师猜道：“一天两次？” 男人说不是。
“那么，一天一次？” 答案依然是否定的。
“一周两次？”
“不是。”
“一个月两次？”
“不是。”
最后，治疗师问道：“一年一次？” 男人终于说是。
自己的理论在此人身上失效，治疗师很是懊恼，他质问道：“那你到底在高兴什么？”
男人回答：“就在今晚！”