My dad had an old-timer's saying, "If you wish to live and thrive, let a spider go alive." I took that to mean that if you squash a spider, you are in for a run of really bad luck!
A childhood belief about creepy crawlies

others believed things like this
- When I was liitle, I used to believe that if a spider would bite me than I would become Spider-Man!!!— IronManxD
- I saw a spider on the floor and thought it was a baby tarantula. We don't even get tarantulas where I live.Anon
- If you pull off the leg of a spider it will rainAnon
- I used to believe a spider monster was in my basement— Kelly bulanek
- Someone told my that rice was really spider eggs. I still don't look at it the same. Anon
- When I was 8 I thought a spider lived in the toilet and would bite me if I sat on it.— Mike