A man goes to his doctor and says "Doc, I have a problem. My girlfriend is sleeping over this Friday, my ex-wife is sleeping over this Saturday and my wife is coming home on Sunday. I need 3 Viagra pills to satisfy them all."
The doctor says, "You know 3 Viagra pills 3 nights in a row is pretty dangerous for a man of your age. I will give them to you on the condition you return to my office on Monday so that I can check you out."
You have a deal the man said.
Monday morning the man returns with his arm in a sling.
What happened asked the doctor?
The man said "Nobody showed up!!"