When I was a kid I was afraid to flush the toilet for fear that a flushing it would let a shark come up. My brother suggested putting the lid down before I flushed it, or I could slam it down after I flushed. That way the shark would hit its head and go away.
A childhood belief about fear of

others believed things like this
- I used to think that a "pool shark" was an actual shark that lived in a swimming poolAnon
- My brother (who was 6 at the time) would never flush the toilet in fear of our new house being blown up! 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 think if I left the toilet seat open my cat would get flushed down the toilet.— G
- When i was younger,I used to believe i could see a shark in a pool .Anon