To be ignorant of the world around you, in such a manner that makes your actions equivalent to that of a person who doesn't really know or care about other peoples perspectives.
Also: An object that lacks realistic value but contains much monetary or black-culture value.
"Don't fuck with me, I been to the pen twice"
As if their lack of grammar and inability to learn from previous mistakes makes them a more formidable opponent.
"Yall ain't got got no grape juice all yall got is grape drink. That's mad niggerish". That is mad niggerish.