a group of brown girls that go out on any given night; an acronym for Brown Girls Night; the girls on the stripper poles that you wish you were dancing with!; noun.
Twink 1: You up for a BGNO this weekend?
Twink 2: Oh I don't know, I'm a bit skint
Twink 1: jug of cheeky vimto, bottle of poppers and a G-A-Y wristband - what more could you want?
Twink 2: BGNO it is!