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15.
Deja vu is life lag - when you see something, but because of high ping you see it twice
Guy 1: Whoa...I have strange feeling this happened before...can't remember when
Guy 2: You just had deja vu. It's an repeated experience of something you did before
Guy 1: So,you can consider going to bathroom as deja vu?
by Anchica December 19, 2008
 
16.
Déjà vu is the really odd feeling you get when you see something happen the exact same way twice, or when you have done the exact same action before, and are doing it again. Usually the basis is completely improbable, like the other side of your mind is insisting that you could not have possibly seen the thing before.

Déjà vu is also a very kickass J-Pop song by Dave Rodgers.
When I held the sniper rifle in my hand for the first time, it felt like I'd been practicing with it forever. Such déjà vu.
by Kenthar March 11, 2004
 
17.
Deja Vu is what happens when your life resets to the last checkpoint in the video game that is your life.
Sammi: Dammit! I must have died!
Trick: Huh?
Sammi: I had a moment of deja vu, you know, when life resets at the last save spot.
Trick: -mind blown-
by Apocalypstic January 09, 2014
 
18.
the feeling when something has happened before when infact is is a brand new experiance to the person.

scientists think its when one side of your brain is working a few seconds or even milli seconds faster than the other side.
guy: wow i think this has happened before.

girl: no it hasnt its one side of your brain working faster than the other.

guy: thanks for ruining my theories of Déjà vu.
by AlExSwOrD April 16, 2010
 
19.
a momentary infinitesimal lag in the operation of two co-active sensory nerve centers that commonly function simultaneously
IRREVELANT EXAMPLES
Girl: omg, ive just had deja vu
Boy: when, when we just kissed?
Girl: yeah !
Boy: but that's never happened before
Girl: it must've ! you were wearing a Nirvana shirt and your hair was greased!
Boy: that's my brother......
by xx~drowning.in.my.tears~xx March 16, 2005
 
20.
the experience of thinking that a new situation had occurred before
As soon as I entered the apartment, I was sure I'd been there before. The feeling of deja vu was overwhelming.
by eminemfan101 September 05, 2013
 
21.
a glitch in the matrix when the AI change something.
oh, dejavu!
...
FUCK, a wall where the exit was.
by clownyfish July 17, 2010