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Extremely serious or with the utmost seriousness. Can also be used as faseriously.
You can't be faserious about that?
by antonia February 04, 2005
are you fuckin serious
Bill: Dude i fucked amanda last night!
Bob: Are you fa serious thats fuckin Boss!!
by Jim bob bill August 25, 2005
For real, seriously
Just tellin it like itis..Faserious
by K Soul July 13, 2009