When I was little, watching the movie Look Who's Talking, I decided that Kirstie Alley and John Travolta were married, and the parts where they filmed them "having sex" (rolling around in underwear) was really them in their home. I assumd the camera men just went there and filmed them doing the deed and then used it in the movie.
A childhood belief about films

others believed things like this
- I used to believe that EVERYTHING we did was being filmed for someone somewhere to watch as a movie— KatBird_27
- I used to belive that John Travolta's name is Johntra Volta— Maria
- people on soaps didn't know they were being filmed— katherine
- As a child I used to think that Olivia Newton-John and Elton John were married.
Boy, I was way off.— Lisa - I used to believe that the credits at the end of a movie was a list of people in that were watching it.— jon_
- when i was little i believed that when we watched a movie people had to act the movie all over a gen.
— Emmer