competition: Dumbest thing I did as a kid

My friend and I were playing with my bow and arrow in my backyard one day. (It was real) Anyways, he was convinced he was fast enough to get out of the way of the arrow, so I drew the arrow back and let it fly! It went into his left elbow and we had to get it out with pliers, he has a huge scar and it still bugs him 17yrs later.