An acronym for "So Funny, Can't Breath". Its a reference to those odd-ball people who usually laugh so HARD that they begin gasping for air after laughing out loud for a period of time.
EveryoneLaughsAtMe: I just ate a 70 pack of bubble gum.
GiggleMaster: LOL!!! LAWLERSKATEZ!
LaughKing: SFCB!
by mRX December 30, 2005
5 Words related to sfcb

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