SB
The acroynm for the term, smug bastard. Often used to describe a person who is highly sure of themselves. Can be used in a conversation when someone is being a snob-like douche hole.
Joanna is such an sb just because she got a raise.
by Refused August 31, 2010

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S!B
noun

a) Secret!Because
-Used on the anonymous LiveJournal community Fandom!Secrets

b) the reason behind someone's lame/embarrassing/saved-me-from-suicide secret pertaining to their fandom/favorite characters or pairings
I hate Hetalia. S!B: all my friends love it and I'm afraid to tell them
by SirEdwin November 13, 2010

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SB
noun. (pl. same) also,S13
Comes from a Chinese words

Pronounces Sha bi,means "Stupid Bitch".
In fact, Sha = 傻(stupid),Bi = 屄(pussy).
If you play online games in China or chat with some Chinese lowlives you'll see it many times.
A is singing in the midnight
B: You are the person between SA and SC.
A: SB,watch your mouth!
B: STFU SB!
A: Screw your sister SB!

...
C: Look! Two SB are talkin bout SB!
D: WTF? Scientiae Baccalaureus ??
E: ...the World is full of SB !
by nobia May 29, 2010

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SB
meaning stoner bitch, or stupid bitch.
"i heard there might be a few SBs at the party tonight."
by cROtCHinfESTER July 20, 2011

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SB
abreviated form of SEXY BEAST
johnny: woah man your'e such an SB
craig: OOO BONK MEH
by sexybeast69 March 11, 2008

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sb
sexual blanket
boy lies on girl
GIRL - 'you're a sexual blanket'
boy - 'eer thanks'
girl - 'I will call you sb'
boy - 'this will never stick'

...3 years later

SBSS
by sbss February 09, 2015

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SB
SB is a very common chinese slang for "dumbass, moron", pronounced "shar-bee", used by every generation in China, from teens to grandpas.
Two chinese guys were riding bicycles. All of a sudden, one guy spit up in the air, the guy behind him caught some of his saliva in his face, then went furious.

MAN1: Hey! Hey!!! @#&#$!!!

MAN2: Huh??? SB!!!

MAN1: @#&%$!#$ !!!!!!!!!!!!!!!!!
by China-dude October 30, 2012

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