I have 8 brothers and sisters--all older. They told me a LOT of things when I was younger--I was something of a "surprise" and I'm a full 5 years younger than any of them.
All of us went to a private school where we had uniforms. When I was getting ready for my first day, my older brother (13 at the time, I was 4) came into my room and told me that the reason they made us all wear uniforms to school was to make us look the same. I said that our Mother had told me it was an "equalizer" so no one would fight over clothes. He said she was lying to me and once I got to school they would give me a number instead of calling me by my name and no one would be able to to tell who I was and no one would care.
This belief lasted for about 12 minutes before my Mother assured me that my brother is an idiot and grounded my brother "for life" (aka, 3 days) but it was a very scary 12 minutes. I was a 4 year old without an identity, something that I was already constantly worried about being from such a large family!
A childhood belief about teachers

others believed things like this
- My older brother once told me that Aussie shampoo was made from kangaroo pee. I avoided using it for years!— Annie
- My brother told me that I would turn into a boy when I got older. It made me cry.— Sarah
- My brother that is 6 years younger than me used to believe that in seven years he would be older than me.Anon
- I used to believe that one day, my younger brother would be older than me and then he'd pick on me!— Andrew
- My brother used to believe that when we went to school dogs went to dog school to learn to speak and read— Matt
- I used to eat doggy chocs until my older brother told me that if I did I would have puppies.— EG