In the UK there was a show called The Adventure Game where the contestants (who were children) had to walk the "Vortex". This was a grid you had to get across one move at a time without the enemy getting to you (a bit like Chess but more sophisticated!). In between the grid lines was nothingness and if the child got caught he fell down into it. I genuinely believed that the children fell into the Vortex and never came back, and I couldn't understand why people kept applying to go on the show.
I am still afraid of grids...
A childhood belief about tv shows

others believed things like this
- When I was a child I believed that if I fell off the earth I would end up on the Plante of The Apes.— IslandGirlie
- I used to think that every time a show came on tv, that the actors were inside my tv acting out the show.Anon
- I used to think that 'Child Locking' only worked on children and that older people could still open the door.— Anonymous Whistleblower
- I used to believe the show Law and Order was a gardening show called Lawn and Order.— Adriana
- I was convinced that children weren't humans, only adults were, children were a total different race!— Leda
- When I was little, I couldn't understand why people called me a tomBOY, instead of a tomGIRL.— Amanda