Two teen boys run outdoors in their underwear to jump into the snow and their dad shuts a sliding glass door behind them. They run back to the door and both crash into it.
A young man rides an All terrain vehicle in a forest and runs into a dead tree that snaps and falls directly on the man's head/helmet.
A young boy rides a steerable sled down a snow covered hill. He makes a sharp turn and crashes the sled as his shoe comes off.
A boy drives a Power Wheels car outdoors, crashes into his older brother and runs over him.