When I was little I used to believe that T-Rex's and Tyranosaurus Rex's were two different kinds of dinosaurs. I embarrassed myself in front of the class once when I asked about this!
A childhood belief about general

others believed things like this
- I believed you had to color all the dinosaurs in coloring books green because all the dinosaurs WERE green.— Betty
- I used to believe that there were two kinds of "P": the regular one, and the elemeno P.
L-M-N-O-P.— Megan - I used to believe that the Chinese boy in my kindergarten class flew from China every day to get to class.— Debi
- i used to believe A.D. stood for "after dinosaurs".— Jennifer
- I used to think that mountains were actually buried dinosaurs.— Jena
- i used to believe i could go back in time so i could see dinosaurs.Anon