A guy goes to the dentist and asks him to take out a tooth that is aching badly. He sits in the chair and the dentist is just about to give him an injection to remove the tooth when he says to the dentist "Please no needles I cant stand them"  Thats okay I will give you gas instead says the dentist. "No I cant stand gas either"
So the dentist gives him two small tablets to swallow. "Will that take away the pain" he asks. No says the dentist they are viagra tablets , At least you will have something to hang to when I pull the tooth out          Keith