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!!! @#&#$!!!
MAN2: Huh??? SB!!!
MAN1: @#&%$!#$ !!!!!!!!!!!!!!!!!
MAN1: Hey! Hey!!! @#&#$!!!
MAN2: Huh??? SB!!!
MAN1: @#&%$!#$ !!!!!!!!!!!!!!!!!
by China-dude October 30, 2012

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