85 Year Old Man goes to the Doctor'

He says Doc, I want you should give me a 1/4 pill of Viagra.

Doctor replies: Harry its great that at your age you still want to have intercourse, and with modern medicine you can do it.  Only to achieve an erection you must take the full dose.

Harry Says..Doc  I just need the 1/4 pills.  The hell with sex, I just want to stop peeing on my shoes.