However, a common misinterpretation of deja vu is a repeat of a certain event. For example, in an episode of Garfield and Friends (US Acres) Orson perpetually removes the same book (Deja vu: the feeling that you are doing something that you've done before) from a box of books over and over again. This is NOT deja vu; rather, it's an event that doesn't have a forseeable end: an infinite loop, if you will.
If you walk into a room and immediately get the feeling that you've been there before, then that is a case of deja vu.
Jack: I could have sworn I've been here before. But I know I haven't.
Bob: Heh. Deja vu?
Jack. Yeah. What a strange feeling!
It is an illusion of having already experienced something which in actual fact it is being experienced for the first time.
French : déjà, already + vu, seen