Had an accident whilst working at a paintball site. An explosion destroyed the top of a building. A 6 inch nail hit the peak of my Grillz. The nail lodged an inch into my skull and when I pulled it out the spurting blood made a fellow marshall vomit in to their mask. Which would have been awesome had I not been a bit freaked out at the time.
If my Grillz had not have deflected the nail - I'd not be here today.