So me and my buddy tryed to go fishing on our launch brake today and i drove my Jeep down a powerline cut tryin to get down to this creek i stopped to take a leak, i looked down and seen a shinny rock (FLINT!) i reached over and grabbed the pee soaked rock and another stone and smacked it, a large glassy black flake flew off, and i let out a battle cry "WOOOWEE"