When I was younger, I used to believe that the sound the toilet made while flushing was the roaring of a monster. The monster, actually, WAS the toilet! I was afraid that it would gobble up my bum if I remained for too long, so I'd quickly flush the toilet and run through the door, zipping my pants on the way out. In fact, this isn't such a funny story because I still do it to this day.
The REALLY funny part, though? I'm almost NINETEEN.
A childhood belief about fear of

others believed things like this
- I used to believe the sound of a flushing toilet was nearly identical to the 90210 theme. — Laurenne
- I used to beleve when i was 4 that the flush on the toilet was to wake up toilet monsters.— Millie
- I used to believe that their was a toilet monster named johny.— sexyallie_69
- I used to be afraid that "boney Legs", a witch from a story Lived in the toilet. Anon
- I used to think if you didnt get up before flushing the toilet would eat you...Anon
- i used to think when it started raining it was god flushing the toilet— edel