Bill O'Reilly's trying to charm audiences, especially since his war with tangentially opposed blowhard Keith Olbermann escalated. There was the Obama birthday wish, and the equal (photo) opportunity accompanying it. But this has been underway for a while, now.
Not to be a tightass, but easy target O'Reilly - whose fire and brimstone scare tactics often involve throwing around his target audience's hot-button words...like "patriotism" - engages in a possibly ignorant act of self-parody here.
Then again, Keyboard Cat kind of is an American Patriot. So there's that.