Viagra 

A man went to the doctor's office to get a doubledose of Viagra. The doctor told him that he couldn't allow him a doubledose. "Why not?" asked the man.

 Because it's not safe," replied the doctor.
 "But I need it really bad," said the man.
 "Well, why do you need it so badly?" asked the doctor.
 

The man said, "My girlfriend is coming into town on Friday; my ex-wife will be here on Saturday; and my wife is coming home on Sunday.
 Can't you u see? I must have a double dose."

 The doctor finally relented saying, "Okay, I'll give  it to you,
 but you have to come in on Monday morning so that
I can check you to see if there are any side effects."

 On Monday, the man dragged himself in; his right am in a sling.
 The doctor asked, "What happened to you?"
 The man said, "No one showed up".

伟哥

一男的跑到医院 要求大夫给他开双倍剂量的伟哥。
不行，大夫说。
为什么呢？男的问。
不安全。大夫说。
可我急着用啊！
你有什么急得？
男的说：“我女朋友周五要来，我前妻周六要来，我老婆周日来……你说我不用双倍的，行吗？”
大夫执拗不过，只好说：“好吧，我开给你，但是，周一你一定要来我这里复诊，我担心会出现什么副作用。”

周一，此男出现在了医院，他的右胳膊打着绷带吊在肩上。
怎么了？ 大夫问。
“别提了，他妈的一个也没来！”