I used to believe that Screech from "Saved by the Bell" and Marv from "Home Alone" were related to each other.
A childhood belief about films

others believed things like this
- I used to believe that all my aunts were related to my mother and all my uncles were related to my father.— Mandy
- I used to believe that Alexander Graham Bell was not just one person. I thought that they were three people!— J.D.
- I used to believe that people with the same first name were related.— Rebecca
- I used to think that all people with the same FIRST name were related.— Lisa
- I used to believe that monkeys were related to fish as they both have mouths!— Quako
- I used to think that the praying mantis was related to the katydid!Anon