Not exactly UNDER my bed, but..
After watching an episode of Oprah about fire hazards, I was unbelievably afraid that my house would catch fire while I slept. I was never scared of fire during the day but it always felt so hot when I fell asleep, like the flames were coming...
I realized 2 years later that my bed was right next to the radiator.
Thanks Oprah. >:/
A childhood belief about under my bed

others believed things like this
- I thought "opera" was pronounced "oprah", as in Oprah Winfrey.— Molly
- i used 2 think if u lied your pants would catch on fire cus of the sayin "lier lier pants on fire!"— nell
- i always thought it was Grape Balls of Fire instead of Great Balls of Fire— Courtney
- I used to think that Oprah was an opera singer.— Mello
- When I was little I used to believe that if I played with fire, then I would wet the bed. — Danielle
- when you sit by a fire it can dry up you bone marrow— debbie