A novice sky diver jumps out of the airplane, pulls the rip cord on his parachute, and nothing happens. He pulls the rip cord on his emergency 'chute and, again, nothing happens. As he plummets earthward he looks down and to his amazement he sees another guy falling up! As they near one another, the sky diver yells "Hey, buddy, do you know anything about parachutes?" And the second guy yells back, "No. Do you know anything about gas stoves?!!"