Old guy goes to the doctor and asks for some 1/2 doses of Viagra. Doc says he'll have to give him a physical because of his age.
After the physical doc says "Mr. Brown, for 85 years old you are in great shape there is no reason why you couldn't use the full doses.
Mr. Brown replys "Hey Doc, I haven't wanted sex for the last 25 years I just want to get it out far enough so I can quit pissin' on my shoes. not fp