Remember when we used to play karate in the hood (remember)
Now my rims look like ninja stars
A juxtaposition of how growing up in the hood they would play fight and act like martial artists, and now, having grown up and entered this world of drugs and music. He can afford rims that look like ninja stars. This also leads into the next line.
Also, this line is reminiscent of how Jay-Z compared being a child with building blocks then growing up to hustle and fight over the blocks with the buildings that made the most.
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