Omg I had a water bed and that is a very narrow space. That had to be awful.When I was that age I would wake in different rooms of the house, sometimes in awkward and uncomfortable positions. Once I woke up on the front porch and that was pretty scary. The worst was waking up under my bed, it was a waterbed so there is no real "under" to it. What it did have was a tight little crawl space where the heating element wires were and I could only fit if I tucked my arms up tight into my chest and slithered in like a snake. The crawl space went from one side to the other so in theory I could have just crawled forward and gotten out, however my bed was in the corner of the room so the only way out was to slowly and calmly back up. Waking up in a closed tight space like that with not a whole lot of light to clearly see where I was; one of the most terrifying experiences I have ever had. It's what I imagine it would be like to wake up in a coffin after being buried alive.