When I was about 13, a buddy and I decided to make a treehouse. We gathered a bunch of old boards and found the best tree. It had two strong parallel limbs we could use. The only problem is the limbs were over a road, but this is a country road in the late 1950s.- no traffic. So we lugged up all those boards. up the tree. Later, we were sitting in our treehouse, when the boards shifted, and we fell out of the tree. There was a car coming down the road, who slammed on his brakes. He stopped just short of us. I often thought about that guy. Here he was driving along, and this pile of boards and kids just fell out of the sky right in front of him.
Then there was when I was about 9. I was coming home from school. The snow was melting, and I noticed a small snow "dam" in the gutter. So I decided to make the dam bigger. Well, the more snow I piled up to make my dam meant more snow melt behind the dam. I kept making it bigger, and bigger, and bigger. Until I went home. My dad was really late getting home. It seems the highway dept had blocked the road, and was breaking up this huge dangerous sheet of ice right across the road.