Well, what if you were actually on your deathbed right now and this is simply your life flashing before your eyes?
This exact moment could just be a tiny little fraction of the seconds in which you see your life, but your brain has slowed everything down because of the state you're in.
Deja vu could simply be remembering the last time you saw that specific point of your life.
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So I'd be reliving my life on my deathbed.. Gee it's kind of bad when I would be remembering me posting on Bnet all day as for what flashes before my eyes.