Viagra jokes?
Sure.
Did you know that he US military recently killed Osama Bin Laden?
It's true!
Special Forces had located the valley he was hiding in, and waited for him to switch location.
As Osama crawled through the rocks, the Good Guys called in some crop-dusters loaded with Viagra, who dusted the valley with it.
When the pr&ck stood up, our Sniper shot him.
The old guy looks at him and says, "What, and give up Viagra?"