A man went to his pharmacist to get a double dose of Viagra. The pharmacist told him that he couldn't give him a double dose. "Why not?" asked the man.
"Because it's not safe," replied the pharmacist.
"But I need it really bad," said the man.
"Well, why do you need it so badly?" asked the pharmacist.
The man said, "My girlfriend is coming into town on Friday, my ex-wife will be here on Saturday. My wife is coming home on Sunday. Can't you see? I must have a double dose."
The pharmacist 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 arm in a sling.
The pharmacist asked "What happened to you?"
The man said, "No one showed up."