I used to believe that when my mom said "Let's go to the Mattress Ball" (which meant for me to go to sleep) that I was really going to go to a Ball- and I insisted in putting on my finest attire... soon she said- "Tonight is pajama night at the Mattress Ball" !!!
A childhood belief about sleeping

others believed things like this
- I used to think volleyball was actually called "ball-y ball"Anon
- I was told as a kid that when it thundered, God was playing basket ball. LOL! — Tony
- I used to believe that your brain was a red rubber ball inside your head.— Greg
- I used to belive that the New Years ball exploded, and people who were near it died.— Angela
- I used to believe that eye-lash curlers were eye-ball eating aliens in disguise— Eliza
- I thought the ball-headed person in the Bic logo was an alien and communicated using alien-like noises.Anon