This YouTube clip of a pet parrot saying "Obama! Yes we can!" over and over looks sort of like any other viral video from a supporter of the Democratic presidential candidate. "The closer we come to the final nomination the more excited he's become," the bird's owner writes in a caption. But to Republicans, it must look like the perfect illustration of what will inevitably become one of their key lines against the almost certain eventual nominee: that his supporters tend to be superficial lemmings, short on real policy knowledge but full of strong, vague feelings about where the country needs to go, and thus not rational enough to pick the country's next leader. This attack vector did not do much for Hillary Clinton, but you can bet operatives for elderly Republican John McCain are working overtime to write it into Obama's media narrative. Clip after the jump.