They Don't Know

The Peoples Champ Paul Wall
working hard every day to make and save up more money
i am the best rapper
description of a vehicle that has been customized with aftermarket paint job using high quality gloss paint, neon lights underneath, and a trunk that should be popped open to display its contents (speakers and possibly video screens)
Paul is asking whether or not you participate in the drinking of promethazine (prescription cough syrup which is ingested to get a buzz), or could be doubting you're even aware of the fact that it happens in many areas across the country.
Pimp C was in jail and Paul was supporting the movement in the South to have him released
To be born in the Gulf Coast or more specifically, the state of Texas.