Let's hope, for his sake, that former Arkansas Gov. Mike Huckabee won't be crushed if he doesn't get his party's vice-presidential nomination, because a crack he made while speaking at the National Rifle Association's convention today certainly won't help his cause.

At one point during Huckabee's speech, there was a noise from offstage. This prompted him to begin to joke, "That was Barack Obama. He just tripped off a chair." This got some good laughs, and Huckabee kept speaking, going on to say, "He's getting ready to speak and somebody aimed a gun at him and he -- he dove for the floor."

CNN has video of that section of Huckabee's speech -- the relevant portion begins at about 0:49.