Curtis Jackson aka 50 Cent began drug dealing at the age of twelve during the 1980s crack epidemic.
“When I wasn’t killing time in school, I was sparring in the gym or selling crack on the strip.
Refers to both weed and cocaine. Marijuana is measured in pounds, while cocaine is measured in kilos. The first part means he has 100 pounds of weed; the second refers to his safe house, where he keeps his money and drugs.
Houses are made from bricks. Bricks are made from coke (different kind of brick obviously). Play on words.
This video is processing – it'll appear automatically when it's done.