One of my and my friends' favourite pasttimes as kids was taking our skateboards to the top of this hill (which, incidentally, had a fairly busy road at the bottom), lying down flat on the skateboards and, well, you can guess the rest.
Surprisingly, none of us ever got hurt cept my cousin who chickened out halfway down the hill and tried to stop; he ended up flipping off the skateboard. As for our parents, their only comment was, "Well, serves you right for doing such dangerous things". XD
When I was at primary school, I was once dared to climb a tree. I caught the skirt of my summer dress on a branch and fell out. I wasn't badly hurt; just cuts and bruises. However, my mum was livid cuz I tore my summer dress all the way up the back so badly it couldn't be mended and I had to have a new one. After that, I made sure that I tucked my skirt into my knickers whenever I climbed trees.