Pronounced "bee/ay/ess" or just "bas." It is an abbreviation for bitchez aint shit. Commonly associated with the B.A.S Mafia originating in Brisbane. A non-profit global movement devoted to the research and instigation that promotes inequality among the genders, propelling men above woman and encourages males to pay the absolute shit out of bitches.
snoop: cunt eyes, whats been happening?
dre: sup cunt knuckles, some bitch was giving me a humma last night aye
snoop: ahh what a slappa, did you give her a blacky and a bluey?
dre: yeh b.a.s'd the bitch had out
snoop: niceee, B.A.S til i die! getting that tattooed on me gooch!