Did you ever have a water bed or sleep on one? Back when I was married, my in-laws bought their younger son a water bed. My wife thought it would be fun if we slept on it one night and since we lived across the street from them we did. Now, this was in the days before wave control and it was quite an experience just getting on it. I have to admit it felt nice, but in the middle of the night I got a big surprise. I woke up in mid air about two feet away from the bed! And since I can''t fly, I crashed to the floor. It seems my wife, not a small woman, set up a wave somehow that put me in the air. Never trusted a water bed after that.