I roll in dough with a good grind
Kendrick is to money as a roll is to literal dough (i.e. he’s made of it!) To “grind” is to go to work. Kendrick is bragging about the money he’s making.
Also a play on “roll indo”, in keeping with all the weed K-Dot and his buddies claim to be smoking. And to roll your weed, you use a grinder, to put it into small pieces.
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