I used to believe that dead fish would dance around the toilet bowl after my older sister said they did, i never went to the toilet for days so she says.
A childhood belief about fear of

others believed things like this
- I used to believe that toilet seats were for kids only and that adults sat directly on the bowl. — Evan Klyne
- When I was a boy I flushed my fish down the toilet thinking that it would go to its mommy and daddy.— Jeremy Clark
- 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