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.
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 !
C1: "Now say this "Haha yeah I'm not too shy tho! I'm not trying to rush anything between us, lets take our time and get to know ea other a lil more."
-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
Person B: Yeah, i hear the kids are going crazy over those things.
Person A: Dude, they've got Sb in them.
Person B: WHAT?! ANTIMONY?!?!?! First the baby toys with lead paint, then the McDonald's Shrek glasses with cadmium paint, now ANTIMONY in KIDS' TOYS?!?! Is ANYTHING safe anymore?!?!
Person A: Dude, calm down. The old lady in the apartment below us is banging on the ceiling...
Person B: Oh... Sorry Mrs. Jenkins!