When I was little I overheard my parents talking about a toilet that was stopped up and Dad had a plunger. For years I thought that meant that if you pooped too much that everything the toilet ever flushed would come flowing back out of it! For a very long time I would flush and then sit in the sink so that if something came out I wouldn't have to stand in 20 years of waste. EEEEEEEW!
A childhood belief about fear of

others believed things like this
- I used to believe that when you flushed an aeroplane toilet the waste would just drop out of the plane.Anon
- 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 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 think if I left the toilet seat open my cat would get flushed down the toilet.— G
- My brother (who was 6 at the time) would never flush the toilet in fear of our new house being blown up! Anon