An elderly man goes in to see his doctor, and asks if he can get a perscription for some Viagra.  Although he was a little surprised, the doc consented, and wrote the script.

The old man asks, "Is it OK to cut these pills up and just take a little piece at a time?"  The doc replies, "There's no need to do that - the pills are just the right dose for typical sexual activity."

"Hell," the old man says. "I'm not concerned about sexual activity - I just wanted a little something to help me quit peeing in my shoes!"