When I was smaller, I forced my mother to come up to the bathroom with me whenever I needed to go. This was because I was convinced there was a witch living down the toilet.
Also, when I flushed, I felt I had to run from the room very fast or else the water-men would rise out of the toilet and get me.
A childhood belief about fear of

others believed things like this
- 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 beleive that if you flushed the toilet that it would explode and all the water would shoot out.— Michelle
- 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 think if I left the toilet seat open my cat would get flushed down the toilet.— G
- I used to be afraid that "boney Legs", a witch from a story Lived in the toilet. Anon
- I used to believe that the toilet would suck me down if I flushed it.— :-)