Perhaps I'm being too sensitive, but...

...it's not that McCain didn't want to talk about Viagra. It's that he didn't want to talk about birth control. And it's not that McCain isn't familiar with either the pill or Viagra -- it's that for McCain, birth control is a politically touchy subject.

Believe it or not, many wingers think birth control should be made illegal. Case in point: Mike Huckabee. And McCain doesn't want to run afoul of them. So when an MSNBC newser passes his discomfort off as being related to Viagra, he's actually helping McCain out of a bind.