Green’s Dictionary of Slang

(US black) a form of address for either sex.

1991		Cooper & Wright New Jack City [film script] You know something, B? This dude is a cop.
1998		Source Oct. 202: Record companies are still not giving us no love, B.
2000		P. Beatty Tuff 74: You call a moreno you don’t know Papi, B, or G, but Puerto Ricans is strictly B, whether you know them or not.
2012		‘Dutch’ ? (Pronounced Que) [ebook] Ya, if you was stackin’ yo’ shit instead of putting it around your neck and up your nose, you’d be EATIN’ EATIN’, B.
2018		Unknown T ‘Homerton B’ 🎵 It’s Unknown T, Homerton B.