I always thought that stood for Big Black Cock
all depends on context, I suppose.

Damn it's shitty outdoors...
( garold you're on mute I SAID YOU'RE ON MUTE, Tue 7 Dec 2021, 14:26, archived)

that was the joke mate, I was 'comedically' implying that Queef Richard's is quite partial to a black man's penis

(morning Hairy biscuit!, Tue 7 Dec 2021, 14:31, archived)