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
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."

The man says "You have a deal, Doc."

Monday morning the man returns with his arm in a sling.

The doctor asks "What happened"?

The man answered "Nobody showed up!"