Oh there's plenty of paper and non-paper out there to do the same damage. Ever cut yourself on cardboard? How about those plastic straps they put around heavy boxes and packages? Or my personal favorite, splinters and burrs. Glass, rock, metal, sheets of plastic - anything thin will do if you hit it at just the right angle. It's a tossup as to which bonus location is worse, under the fingernail or across the finger webbing. Or if you're REALLY unlucky, the eye. a scratched cornea is no joke. Wear your safety glasses kids.