First month after we moved into our house, I had a neighbor kid come over on his bike. He turned around in my driveway and I noticed he was stuck. Went over and he was dragging his brake lever on the handle bars down my pretty new (about a year and a half old) Audi. I bit my lip and went inside, never bringing it up with the new neighbors. But a year or so later when he was playing on our swingset and slipped on the lader, busting his lip, I was ready in case they came knocking.