When I was little I use to believe that the middle part where the water comes out from on the shower head was an eye looking at my naked body. So I use to wear shorts in the shower so the eye couldnt see my private parts.
Till this day I still wear shorts in the shower. I'm 34.
A childhood belief about bathrooms

others believed things like this
- 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 take a shower meant to go steal a shower from the storeAnon
- 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 used to think that if you go into a shower nothing can hurt you because you're protected by water — Foxxip
- I used to think when I peed in the shower as a kid, the water coming back through the showerhead was my pee.— gregg
- I used to think that trolls lived in my shower drain and showered with my dirty water— Troll bather