From The Hill:

During a speech to the National Rifle Association convention in Louisville, Kentucky Friday, former Arkansas Governor Mike Huckabee joked to the audience that an offstage noise was Barack Obama avoiding gunfire. “That was Barack Obama, he just tripped off a chair, he’s getting ready to speak,” Huckabee said. “Somebody aimed a gun at him and he dove for the floor.” The line was met with laughter.