Well, I would sleep walk a lot when I was younger. I also slept in the funniest positions. One time, I woke up under my bed.. Yep. UNDER. I woke up barely able to move and surrounded by stuffed animals. To this day, I have no clue how or why I was under there.
As for the kitten story, I have woken up to meowing under my bed, because she gave birth under there. But never in my bed. lol