Well probably not my worst, but still pretty bad. I managed to accidentally stick a sheetrock saw through my hand yesterday. It was laying on the slab, and I went to pick it up, well my foot caught the edge of it right as I grabbed for it, and it snapped up and right through my hand. It went in right next to the thumb (in the palm area) next to the muscle and come out between one of my veins and bone. Luckily the doctor said I didn't sever the nerve branch right there, but he said I might have damaged it, since I can't feel a whole lot in my thumb and forefinger. I had to get a tetanus shot and some antibiotics. It's a real bummer, cus it made wiring my shift light today extremely difficult, lol. It also makes typing a real PITA, lol. Here's some pics of the saw for you non-costruction guys.
EDIT: fixed the pics
EDIT: fixed the pics