"Easy enough." Peter bent the disk into a U and squeezed it hard, trying to snap it. This required a surprising amount of effort. Finally it made an explosive crack and fell apart into two halves, but several shards went flying onto the table and the floor. "Fuck!" Peter said. He dropped the two jagged semicircles onto the table and held up his right hand to display a cut on the base of the thumb, about half an inch long, with blood welling out of it.