When i saw Sphen King's IT, I used to believe that IT would came out from the toilet and grabb you from your ass with his sharp claws and then he would swallow you to the depths of the toilet and there he would kill you.
A childhood belief about fear of

others believed things like this
- I used to believe that Limabeans would kill you if you didn't eat them.
I flushed them down the toilet.— Lima - 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