When I was in kindergarten, I thought "blast-off!" was the same as "zero," because I saw a sketch of a rocket launching on Sesame Street. So, when we practiced counting backwards out loud in school, I'd say "blast-off!!!" instead of zero. Neither the teacher nor my mother bothered to correct me, because they thought it was cute. :)
A childhood belief about counting

others believed things like this
- I thought that Count Dracula was the count from Sesame StreetAnon
- I used to believe that “Emo” was related to Elmo from Sesame Street.Anon
- I seriously used to believe that Bert from Sesame Street lived in my closet and that he was going to kill me.— Liz
- When I was in kindergarten, I used to believe that they locked the teacher's in the teacher's lounge at night.Anon
- i believed there were little men in my etch a sketch that did the drawing— now a mom
- When I was little I thought you could get arrested if you accidentally skipped a number while counting.— Hailey