When I was a kid, my parents used to warn my sisters and I not to sit for too long on the toilet or you would grow a cord out of your bum that would attach to the toilet and you would be stuck there forever... the thought still scares me..
A childhood belief about fear of

others believed things like this
- I thought that toilet paper was bread and by puting it it the toilet i was feeding the ducks at the bottem.— Gringo
- I used to believe that monsters lived in my toilet and they ate my poop and urine when i flushed the toilet.Anon
- I used to believe that if I flushed the toilet before I showered, I would take a shower in dirty toilet water.— Chris D
- I used to beleve when i was 4 that the flush on the toilet was to wake up toilet monsters.— Millie
- I used to think if I left the toilet seat open my cat would get flushed down the toilet.— G
- I used to believe that if I sat on the toilet too long a snake would come up and bite me.— Cheesemonkey