Someone who is hard, a "G", a thug, are someone who has a thuggish mentality like a pimp they get money no matter what, someone who may are may not be a drug dealer, but they are very well respect were they live and they do not put up with anything are anyone’s shit.
Tee: Damn do you see Tray over their getten loud with Tim?
Ray: Hell yea he's crazy.
Tee: Did you hear Tray is in the hospital Tim beat the shit out of him it's crazy he's still alive!
Ray: That's his fault he knew Tim was a "Gunn"!