I used to believe that people only grew upto age 10 as I hadn't been taught how to count beyond 10 at that age.
My mother has a neurological condition where she has trouble concentrating on multiple things at once (not ADHD).
When I was a kid, I thought that this was an "adult" thing and that as I got older, I'd eventually lose my ability to concentrate on multiple things at once.
As I grew to be a teenager, I thought that I was the weird one and had some sort of mutation or other that allowed me to focus on more than one thing at a time.
It was only when I was about 16 that I learnt that having trouble focusing on multiple things at once was the exception, not the rule.
When I was eight or so, I was at the mall with my mother and got bored, so I looked through the greeting cards for something to do.
One of them had a message "you're not old until the fat lady sings" and when I opened it, it had an illustration of a large woman singing. I was worried that I'd then turn into an old woman.
Not me, but my cousin thought you had to be 30 to have body hair.
My birthday was on a different day every year, assigned by my parents
I know this one is very common, but I'm gonna submit it anyway. I, like many of us, used to believe that stupid little kids were the only kind of little kids that existed. We all used to believe that at some point. I mean when you see an anonymous 5-year-old throwing a tantrum, or an anonymous 5-year-old doing bawling, or an anonymous 5-year-old whining, of course you're gonna believe that stupid little kids are the only kind that exist.
I saw one of my baby videos from long ago. I was two years old at the time. My mom asked me how old I was, which I replied "two years old". Then she asked how old daddy was. I said "four years old"! At the time, I must have thought that my dad was not much older than me, because I didn't know how old people could possibly be. Also for a 2-year-old, four seems awfully old!
I used to think when you got older you had to become a mom or dad
I used to think that adults never cry.I think this might be common because when you were a kid and the adults would say "oh don't cry big girls/boys don't cry".
I used to believe that adults were born adults, while children would have remained children forever
I can remember blowing a dandelion and wishing out loud to grow older than my older sister. I guess my concept of time was whacked, but I thought that maybe I would lap him in age...or something.
when I was little, I used to think that everyone was a child but someone invented adults to take care of us.
I used to hear about parents letting their kids go at 18, and I thought that, on your 18th birthday exactly, you'd have to leave. I played this doll game where my doll was 18, and I was standing on a stool saying, "Goodbye, Mary, I have to let you go."
My brother is six years older than me. For a reasonable amount of time I was pretty sure that eventually I would grow to be older than him someday...
I used to think that once you become 13 years they stick you with hundred of needles and after that you don't need any more shot at doctor's
I used to think one of the neighbors was an elderly angel. She was always so nice, after all, and her house was all white inside and she wore mostly white. She liked Gatorade too, which I thought was unusual for a little old lady.
As a pre-teen, I had hormonal depression but didn't know it, so when I stopped finding toys and games fun, and everything felt bleak and boring, I thought it was a natural part of growing up for everybody. You didn't just outgrow playing certain childish games, you outgrew liking games *at all.* I figured that adults were all just miserable, or else that soon I'd "grow into" liking cleaning house, cooking, and doing taxes. I hoped it would happen soon, so I could be happy again.
(Don't worry, I'm on medications now! I got my "fun" back!)
When I was about four, my grandmother joked that she was twenty-one. I believed her, despite the fact I knew my mother was in her thirties and you needed to be a certain age to have kids. I just thought it didn't make sense because I was bad at math.
I used to believe that as I got older, games and cartoons would stop being fun for me, I would start wanting to wear more plain clothing, candy and desserts wouldn't taste as good anymore and I would no longer need to sleep with my stuffed rabbit. Now I'm twenty-two. So far, none of these things have happened. Here's hoping they never will.
I used to believe that if your parents kiss you on the forehead and say "You won't get older" Well, you know. You wont get older!