I thought you could die from chewing gum while in the shower.
A childhood belief about chewing gum

others believed things like this
- I used to believe that take a shower meant to go steal a shower from the storeAnon
- I used to think that toilets led to the shower head. That's why I never took a shower :D— scared
- I used to believe that if you took a shower after a day of tanning the tan would come off in the shower— Shar
- I thought for some reason that chewing tobacco was REQUIRED for Major League Baseball players.— Jeff
- I never used to take shower after going to the beach, because i thought that tans washed off right away.Anon
- i used to think boogers were chewing gum. Gross, i know!— ediop