Two scouts are "on stage," First Scout showing the other a backpack. First Scout: This is our top-of-the-line parachute, guaranteed to work. Second Scout: What is this cord for? First Scout: That's the ripcord, you pull that, and the parachute opens. Second Scout: What's this other cord for? First Scout: That's the reserve chute, if the first one fails to open you pull that cord and the reserve chute opens. Second Scout: What if that one fails to open. First Scout: Bring it back and we'll give you another one, no charge.