I used to beleive when I was younger that the reason the water did'nt fall out of the oceans when the earth "turned" was because all of the oceans were covered in seran wrap, but it was a sepical kind that only you could see from space, so thats why you could still go swimming.
A childhood belief about water

others believed things like this
- I used to believe that the sky is blue because it reflects the oceans.— sky-is-blue
- At the time I thought the moon was made of cheese and with oceans of cheese— 123
- When I was younger, I thought I could run and fall off the edge of the earth. Anon
- I used to believe the earth was covered with shiny cloth at night by God.. — akz
- my Dad told me ice rinks were defrosted every evening and turned into swimming pools— neil
- I used to beleive that (like your teeth do) your lips would fall off so new ones could grow.— Queen Ohla Quads