Here's the story.
Stevie was playing in a little league lacrosse game. He was playing attack when his team got the ball. The ball was passed to him and he caught it mid-air. He turned quickly and ran down the field, dodging players from the other team right and left. He was within shot distance when he found a break in the defense. With defenders slashing at his stick, he took the nearly impossible shot with incredible force. It hit the goal post and rebounded violently back and hit him right in the forearm, shattering it instantly.
Or, he fell off the swing at school during recess.
Believe what you want to.