The chuck hole being the hole in the door that you are served food through in jail or prison so you can be served while the door is still locked. A chuck hole gangster is an inmate that yells through
the chuck hole about how bad ass he is but then can't
back it up once the door is open.
Man I thought that
black kid was probably very good at fighting the way he talked.....but when the
doors opened we saw he was just a chuck hole gangster.