Back To The Future - That's Some Fast Writing Jennifer!
Here's a slipup in the scene when jenifers dad picks her up from school.
If you pay attention she writes down her number on a Piece of paper. Here's why it's a slipup she handed marty the paper pretty fast when you see Marty looking at it
it says I love you and theres a phone number below it.
How could she have written so much so fast?
The paper was clearly already written.