I used to believe that the No Clothes Monster lived under my bed (he looked sort of like Gollum from Lord of the Rings). If I ever stood completely naked in my room, he would get me. So when I changed my underwear I was very careful to keep one leg in the old pair until I got a new pair on. I probably did this until I was twelve or so.
A childhood belief about under my bed

others believed things like this
- ... i used to believe the more stripes my pair of sneakers had, the faster i would run ...— wilbur
- After my dad read The Hobbit to us, when we were little, I thought that Gollum lived in the toilet. — PixelFish
- I believe that there is a monster in the air vent and watches me when I put on my clothes— Blablabla
- I used to believe jaywalking meant walking around naked in public (from naked as a JAY bird...)— Izzi
- i used to believe that a ghost lived under my bed and that a giant lived under our dining room table.— nameless
- i used to believe that a monster lived in the garbage disposal. i would never go near the sink— Whitney