I used to be so afraid of the toilet because when I was little I believed that frogs were waiting in the toliet to lick you clean when you've finished your business. When I became an adult and an ACTUAL frog was in my toilet, I had a panic attack (clinging to my husband in fear "it's true? I thought I made that up...")
A childhood belief about fear of

others believed things like this
- My brother (who was 6 at the time) would never flush the toilet in fear of our new house being blown up! Anon
- 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 be afraid that "boney Legs", a witch from a story Lived in the toilet. Anon
- 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