I remember when I was 10-11, for fun during the winter, we would toboggan down a run near our house, but it was no ordinary run, about a 30 degree angle, maybe 10 feet wide with trees on both sides and at the very end of the slope was a brick wall so we had to do a very quick stop to avoid it. We never thought twice about it. It still amazes me no one was ever hurt.
I also remember having BB gun fights with live pellets. Eye injury? what's that.
good old days.