http://phrequency.squarespace.com Actually, they're not. Seeing that this is what passes for "conservative humor" nowadays, is anyone surprised that "The Half Hour News Hour" was an abject failure? You don't have to answer that. During a speech before the National Rifle Association convention Friday afternoon in Louisville, Kentucky, former Republican presidential candidate Mike Huckabee — who has endorsed presumptive GOP nominee John McCain — joked that an unexpected offstage noise was Democrat Barack Obama looking to avoid a gunman. "That was Barack Obama, he just tripped off a chair, he's getting ready to speak," said the former Arkansas governor, to audience laughter. "Somebody aimed a gun at him and he dove for the floor." How is this even remotely funny? I know the Huckster is quick on his feet, but how did he think of this "joke" so quickly? That's some serious improv skills right there.