Pretty common belief among stupid 7-year-olds, I think; humans couldn't see colour up to the mid-60s.

I thought those crosses or flowers on the side of the road were where they buried the person who died in an accident.

That there were little gnomes inside the doors of the cars and that they were in charge of raising and lowering the windows, especially in the automatic cars.

The semaphore homunculus lived in the stop lights at intersections.

In my Superman onesie (w/ cape), I could fly, but was never brave enough to launch from a high enough step on the stairs. I knew I was flying, but...

I used to think a car direction indicator was a GPS guiding system, and not manually operated.

Tigers are female lions.

I believed I was an adopted alien from outer space before I realised my face is like my father's but prettier.

That we would live in peace

Can I'll cheat a little and use my teen years.
When let's plays where the new hot thing, I thought a blind let's play literally meant, eyes closed

That tv programming would pause when I turned the TV off.

rice turned water into soil

Cthulhu is a Hindu god

Freddy Krueger was two people. I thought it was like Dr. Frankenstein and his monster. I thought it was Dr. Krueger and Freddy was the monster he created. When I saw the movie I was like where's his creator, the one that brought him to life?

I used to greet clothing store mannequins and thought that people who didn't were very rude.

that you're supposed to show a middle finger as if you were showing it to yourself