One very stupid thing i once did, was when i was riding a bike, and didn't pay attention to what was happening in front of me. I was looking to my right, to see if i could find a few friends. Suddenly there was this car, i tried to go around it, but crashed into the headlights with my knee. Nearly lost my leg there. So riding a bike, and not paying attention to the road, isn't a very smart thing to do.
