Top Definition
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
To be serious and for reals at the same time
Betsy was fa-serious about joining the cheerleading squad.
by Idk2535773222565 June 21, 2016
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