I used to be afraid to swim in the deep end of our pool if no one else was in the pool. For some reason, I believed piranhas would come out of the filter and eat me.
A childhood belief about swimming pools

others believed things like this
- I believed that the Kreepy Crawlie used to clean our pool, would follow me around the pool and eat me. — Mother-of-2
- i used to believe there were invisible sharks in the deep end of the pool, thanks to my older brother.— Melissa
- I used to think that a "pool shark" was an actual shark that lived in a swimming poolAnon
- I believed that the ladder on the back of a trailer/rv led up to a swimming pool.— marilese
- Up until I was in 3rd grade I believed my bathing cap is what kept me afloat in the swimming pool! Anon
- I believed travel trailers had a pool on top because the curved ladder was the same.Anon