A man went to the doctor's office to get a double dose of Viagra.

The doctor told him that he couldn't allow him a double dose.

"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 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 arm in a sling.

The doctor asked, "What happened to you?"

The man said, "No one showed up"