I used to believe(and I still do) that when ever I was in my Grandfather's pool, if I swam over the drain, it would star a whirlpool and I would get sucked up. To this day I've never swam in the deep end of any pool.
A childhood belief about swimming pools

others believed things like this
- i used to believe there were invisible sharks in the deep end of the pool, thanks to my older brother.— Melissa
- 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 that i swam more than 2 hours I would become a mermaid.— M11cazares
- I thought ducks couldn't fly - thats why they swam.— G
- I used to think that a "pool shark" was an actual shark that lived in a swimming poolAnon
- If you pee in a pool, the pee disappearsAnon