A filmie is someone who only watches the films of a particular series, and not the books.
Examples of popular series include Harry Potter, Lord of The Rings and Twilight, though Twilight isn't a good series of books. Actually it's completely crap
A) Person 1: OMG I hate Snape from Harry Potter!!!!!! He killed Dumbledore!!!11
Person 2: Either you haven't got to the seventh book yet or you're a filmie
B) Random person on twitter: LOL wow two harry potter related TTs! Harry Potter is my favourite film X
Another person, who's a complete stranger to them: God, not another filmie...-.- *sigh*