I once believed that there was an owl living in the fireplace. I became so frightened of it that I refused to go into the room until my dad burned the bricks in the back of the fireplace so the "owl" (that he couldn't even see) was no longer there.
A childhood belief about monsters

others believed things like this
- I used to put a camera along my fireplace on Christmas Eve in hopes to tape Santa.Anon
- I believed that the inside of a tomato was a small, living creature and I flatly refused to eat that bit.Anon
- My mum used to tell me that someone was delivering bricks at the top of our road when it thundered!— Deb
- When I was little I thought that thunder was the bricks of our house banging together for some reason.— Ncik
- I used to believe the living room furniture would party after we all went to sleep.— Ellen
- I used to believe hat the news readers could see into my living room so i sed to undress behind the couch.— henri