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!!! @#&#$!!!
MAN2: Huh??? SB!!!
MAN1: @#&%$!#$ !!!!!!!!!!!!!!!!!