wild weekend

Jim 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 Jim.
"Because it's not safe," replied the doctor.
"But I need it really bad," said Jim.
"Well, why do you need it so badly?" asked the doctor.
Jim 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, Jim dragged himself in; his right arm in a sling.
The doctor asked, "What happened to you?"
Jim replied, "Nobody showed up."