Some examples of common inner-city slang, and it's definitions:
As quoted by lscalder- The word bama is word which describe someone in a negative way.
Example: If someone did you wrong. You would say that person is a Bama because he/she did this to me.
Or If someone have no sense of fashion, that person is a Bama.
JOINT or JONT- Any noun used to describe a personal possession, a place, thing, or more commonly a marijuana cigarette. (ex. "I got that JONT!" or "Let me see that JOINT right there.")
JOE - A common used nickname to replace your given name. (ex. What's up Joe?")
Other common used forms of nicknames include, but not limited to:
MAINMAN, SLIM, YUN, CUZ or CUZ-O. (all though I have heard the term JOE used in Chicago.)
LUNCHIN'- An often used term depicting strange behavior. (ex. "Yun, what's up with your man? That bamma was LUNCHIN' the other night." or "Boy, you better stop LUNCHIN'!")
CRANKIN'- Used to describe nice sounding music with a hard steady driving beat, such as Go-go. (ex. "Joe? Man, Backyard was CRANKIN' last night down the CFE.)
JACK- Often referred to as a cigarette. (ex. "Can I bum a JACK?")
ROLLER- A person known to be sexually active with more than one person at any given time. (ex. "I heard that girl Theresa was a ROLLER. I'm trying to get at that JOINT.")
BO-DEENS, DA FLAG, FEDS, or DEM BOYS- Simply put, THE POLICE. (ex. "Watch your back, 'cause DEM BOYS posted up 'round the corner.")
AMIGO- Commonly known as the Spanish term for "friend", most DC area people use this to describe any person of Latino descent. (ex. "Mt. Pleasant is where all the AMIGOS live.")
U-U- Derived from the law enforcement term Unauthorized Used of a Vehicle, most inner-city youngsters use this term in reference to a recently stolen automobile. (ex. "Those youngins got a U-U the other night!")
There are alot more slang terms used by mostly inner-city youth, but it's hard for someone in their late 30's to keep up with most of it.

As I hear more, I'd love to share it with you all.