A Touch of Snark
This is inappropriate for a Memorial Day weekend but the thought did strike me: Doesn't it seem blindness would be more likely to lead to the overuse of Viagra than overuse of Viagra would lead to blindness?

And in the same jocular vein, my favorite Viagra joke (as told by Harvey Korman): When asked if he used Viagra, he says, "Not much point to it. It'd be like putting up a new flagpole in front of a condemned buiilding."