When I was a young lad, around the time of the dinosaurs, we camped in a tent trailer. My younger sister fell out of the trailer, as the bed end roofs were just held in place with elasticized fabric. She hit the ground, woke up, wandered to the door, and because she did not know how to open the door, started crying. She was let in, and promptly fell asleep. Just happened before the nanny state took so much interest in those things that were fun, like merry-go-rounds, and monkey bars. I know....too old.