One Wednesday afternoon a man turns up at his doctor's office asking for a large supply of Viagra.... like a month's supplyin one hit.

The doctor asks why he needs so much but isn't quite prepared for the response....

"Well my ex-girlfiend is coming over tomorrow night because she can't make it over Easter."

"I don't see why you need a month's supply for that."

"Well on Friday night my first ex-wife is coming over to relive a bit of our former love life."

"I still don't see why you need a month's supply."

"Well on Saurday night my current girlfriend is coming over for some loving moments."

"But that's just three nights and I still can't see the need for a months supply."

"Thing is, doc, my next door neighbour's husband is going away on Sunday morning and she's coming over to spend the day and night with me."

"I see," says the doctor: "but are you sure a month's supply is necessary??

"Yes, because on Monday an old school girl friend of mine wants to come over and catch up on old times."

"Oh very well." the doc says and he writes out the script.

On the Tuesday the man is back with his arm in a sling and his hand all deformed with cramp.  The doctor points to his arm and asks: "Well what happened, there?"

The man replies: "Nobody turned up."