Dr. Dre

Nuthin' But A G Thang The Chronic
Dre is about to sing his verse; he is being called to the mic. Creeping is also driving and a phantom is a type of rolls-royce, so his flow or style of rap is smooth like a ride in an quality vehicle. "approach in a smooth, ghostlike manner"
Nuthin' But A G Thang The Chronic
Gotta break 'em off somethin' means to share the wealth or to give something meaningful to someone else. In the context of this particular part of the song, it means a very good song with a strong beat.
Nuthin' But A G Thang The Chronic
The Notorious D.I.P.
Nuthin' But A G Thang The Chronic
You're acceptable enough to me to get a good chunk or piece of the weed.
Fuck Wit Dre Day The Chronic
Actually, "mark" is a derrogatory term. Dre is saying just by affiliation, he was a loser.
Nuthin' But A G Thang The Chronic
With all due respect, 'clockin a grip' doesn't have anything to do with guns. 'A grip' is slang for 'a lot.' So, what he's saying here is that he's making (clockin') a lot of money as a pimp. The Dolemite bit is pretty spot on though.
Nuthin' But A G Thang The Chronic
Fading means falling down in the top music charts until you're no longer signed for more records.
Still D.R.E. Chronic 2001
Dr. Dre is saying in the year 2001 he still wears pleated khaki pants with cuffs on the bottom of the legs and a crease down the front of each leg like he did and which was stylish in the '90s. he isn't going to change just to fit in with current trends.
Let Me Ride The Chronic
because of all the criminal activity Dr. Dre witnessed in Compton California, it was not unusual for the people of his neighborhood to find corpses of people who were murdered on Greenleaf Boulevard just north of Interstate 91
Nuthin' But A G Thang The Chronic
boxer Evander Holyfield's nickname was "Real Deal Holyfield"...he is saying that he is even realer (more honest and tells it how it is) than that