BBC
A “BBC” a term which stands for a big black cock. And no bbc doesn’t mean bitches be crazy I never heard anyone say that.
Girl1: Omg Marcus is soooo hot and buffed.
Girl2: I knowwww he definitely has a BBC.

Another example

Boy1: These girls don’t what’s coming to them!
Boy2: Dude shut up, you only have a 4 inched white dick. I am the one with the BBC.