A 65 year old 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 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 one
condition that you return to my office on Monday so that I can check
you out."

The man says, "You have a deal Doc."
Monday morning the man returns WITH HIS ARM IN A SLING
The doctor says, "What happened?" To which the man replied, "Nobody
showed up!"