Self mind-reading

Well I can't blame you, I've met a decent amount of people who don't seem to be able to think

I thought crossing my eyes was my superpower

This thought is universal, but typically ends at the age of 4.. If you want to know more, search for Theory of mind

Hey, at least hopefully it was a self-confidence booster!

I thought my knuckles were going to grow into wolverine claws.

I once told my teacher about that and she told me that I was just "thinking"

That is hilarious.

I once tried to have a secret from the voice in my head when I was small, that didn't end up as I thought

In fifth grade this girl at my school started this game at recess where you were some magic being (like fairy, unicorn, dragon, etc) and somehow she got, I kid you not, the entire fifth grade into the game. Like, it would come up in day to day conversation (questions like "what are you" and stuff like that)...if I remember right, I chose to make myself a mermaid who, when dry, turned into a unicorn fairy.
Best game ever.

Yep