The feeling of having already seen this vagina before.
I was banging this chick the other night and it was like Déjá vag, all over again! Maybe she has a twin.
by knathaniel May 27, 2010
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The overwhelming sensation of déjá vu that occurs shortly after posting a message or status update in a social media; the feeling that you've tweeted this before.
"I'm getting serious déjá tweet about that Twitter message I just posted..."
"Yeah, dude, you posted the exact same thing two weeks ago."

"Hey, are you feeling déjá tweet about your Tuesday status updates?"
"Yeah, but every Tuesday's the same for me."
by zims October 7, 2012
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