When I first got elected to student government in my first year of university (so, I wasn't a kid then, I was NINETEEN years old, lol), whenever we talked about moving "in and out of camera," I kept looking around to see if I could find an actual camera hidden in the ceiling or something. One day, I asked this one really nice older guy where the camera was, and, fighting back the urge to laugh at me, he explained to me that it was just a Latin term to distinguish private, closed-door discussions from matters where we didn't have to worry about confidentiality so much.
A childhood belief about foreign languages

others believed things like this
- I thought if you point the video camera at the TV then both the video camera and the TV will explode.
Anon - I used to think that the laugh track on sitcoms were the camera men, directors, other actors, ect. laughing.Anon
- I used to believe,there was a little person inside my Dad's box Brownie camera.— Sandra R
- I used to put a camera along my fireplace on Christmas Eve in hopes to tape Santa.Anon
- Before the invention of the camera, everything looked like a cartoon with the quality/effect of oil painting.— MD Caruso
- For the longest time I thought Pig Latin was an actual language that they spoke in a part of Europe.Anon