Just when you thought the Swift Boat Veterans for Truth couldn't come up with anything nastier in their bid to smear Democratic presidential candidate John Kerry, along comes their latest commercial. No longer content to suggest Kerry didn't earn his Purple Hearts while serving in Vietnam, the Swifties are now saying that not only wasn't Kerry in Vietnam during periods when he claims he was, he was actually hanging out with George W. Bush during the future president's stint with the National Guard in Alabama. "And we know what that means," said John O'Neill, spokesperson for the Swift Boat Veterans....