OMG I literally have a list of things that I used to believe as a kid but not anymore!!
I have a lot, so I'll only mention a few. Some are:
-If you eat a seed (like from a grape or something), a plant grows in your stomach.
-There was a frog in my stomach that croaked when I got hungry because it wanted food (actually just my stomach rumbling)
-I believed that babies had batteries and if they didn’t stay quiet you could just take the batteries out
-I thought police were bad because they put people in jail (I thought it was for no reason)
-In movies, where there was a young character and then later on in the movie they had grown up, I thought they waited for years for the same person to grow up so they could continue filming the movie, and I though “wow, that would have taken an awfully long time to film!"
-I thought the moon followed me because it didn’t seem to be getting further away when we were driving
