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2. sfb
Shit for Brains
Hey sfb, what ya doing ??
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1. sFB
Stupid Facebook. Used to express frustration with Facebook for numerous reasons.

As it is described by its Facebook fan page:
It's not just Facebook. It's stupid Facebook. It's often broken, usually annoying, and occasionally appreciated. But stupid. sFB.
"Facebook is messed up again. sFB."

More often "sFB." appears to express user frustration with no other explanation needed.
3. sfb
skinny fat bitch.

a girl who eats a lot but is skinny
WOW that girl is eating a triple cheeseburger, shes an sfb!
4. SFB
So F***** Bored
As a status:
SFB.....
5. sfb
Spoiled fucking brat
My stepson is a sfb
6. sfb
A group of kids from los angeles who just don't give a fuck... known as OG's to everyone in LA... (dera, spur, mower, adub, lexr, beam, omets)
One guy: "aye I heard those guys are from sfb"
Other guy: "aw fuck, let's get out of here."
7. sfb
Serious Fucking Business
Crystal: omg my grandma died just now!

Anonia: haha wow that's some sfb