My parents covered our above ground pool with black plastic every Winter. To keep us away from the pool they told us there was a monster in the pool and I believed it for years until I finally started wondering where did the monster go in the summer?
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 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
- When I was little, my dad told me that if you pee in the pool the water will turn purpleAnon