As Steve says, Colby had his initiation into boyhood a couple days ago. He tried to see if he could ride his car down the basement stairs, and well...the stairs won. Thankfully a small break was the only result and Colby has been super brave the whole time and immediately adapted to the cast like he's had it his whole life. (He did make sure the nurse knew he did not need any shots though!)
It does make me a little nervous that when people ask "now you know not to do that again, right?" his response is "why??".