Didn't draw blood, but almost knocked myself out polishing the aluminum panels. Had a panel on the work bench, was polishing away when I got too close to the cord, it proceeded to wrap around the polisher and pull itself out of the outlet. Caught the cord end right square in the forehead, buckled my knees for a second, before I realized what happened. From then on, instead of using an outlet on the workbench, I used an extension cord to the other end of the garage.
