A man went to the doctor to get a double dose of Viagra. The doctor told him that he could not prescribe 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.
"My girfriend is coming to town on Friday, my ex-wife will be in town on Saturday, and my wife is coming in on Sunday! Can't you see, I need a double dose!"
The doctor finally relented but said, "you have to come in on Monday morning so I can check you out to see if there are any side affects."
On Monday morning the man dragged himself in, his arm in a sling. "What happened to you?" asked the doctor. The man replied, "No one showed up...."