A friend of mine got a prescription of Viagra but he got scared at the last minute and threw them down the well. (They live on a farm).

A week later he ran into the Doctor on the street and the Dr. asked him if the viagra was helping him.

My friend told him what he had done and the doctor asked him, "Has anyone been drinking the water from the well?"

My friend replied, "Hell no!! We can't get the pump handle down!"