I was watching a movie with a friend.. Parent Trap (The newer one) and there were twins in the movie played by the same actress. One twin had nail polish, and the other didn't. When the twins were interacting, the scene kept switching back and forth between the two.
My friend informed me that "You wouldn't believe how many times they removed that girls nail polish and repainted it when they switch back and forth."
I'm not sure if she was trying to trick me or if she really believed this, but she did have a hard time understanding when i tried to explain that they taped all the shots of one twin, and all of the other then edited them together.
A childhood belief about films

others believed things like this
- Polish war memorial ,I thought it was an instruction.as in to polish— oddsox
- I used to believe that every person in the world had a twin, and that I had a long-lost twin in France.— Ashley
- I didn't know whether nail files were supposed to make your nails sharper or duller.Anon
- As a youngster, my older brother told me that polish sausage was really the bull's genitals. — Ross
- I used to think that the moon was God's toe nail, when it was in the shape of a crecent— Ms.imagination
- when i was young i believed Micheal Jackson and 'the artist formerly known as prince' were twin brothers.— tim