I used to think that when two countries were at war, a rope divided two sides of a field and both sides would line up on their side and they'd just start shooting at each other until one side was completley eliminated.
A childhood belief about wars

others believed things like this
- I used to think that the right sides of roads are empty in England, since everyone drives on the left.Anon
- I used to believe that if I chewed on one side of my mouth too much the other side would get jealous.Anon
- i used to believe that everyone had a twin on the other side of the world.— tahnee
- I used 2 think that the scar on my side said "UNUSEABLE" LOL!!!!!!— John In Pennsylvania
- Until I was 23 I used to think the ginger put with sushi was a side of ham.— maari
- I used to believe that if I scratched one side of my body I had to
scratch the other to be "even".— Greg