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1. efc
Short for Enemy Flag Carrier (enemy who has your flag) in capture the flag matches. Usually with location to inform teammates.
*SGT. MAC HAS CAPTURED BLUE FLAG*
(team)Johnny: EFC tunnel
by Retu May 23, 2005 add a video
2. EFC
Short for Evil Fucking Cunt.
We have a EFC in the family,she is annoying,overbearing manipulative and controlling.she posts shit on the internet apparently just to piss people off then deletes it and later denies that she said it.
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