Got o' money so long, I ain't movin' cash in them checks
Can be interpreted in two ways:
(he isn’t moving his cash around in checks)
He has so much money and checks aren’t entirely safe (check fraud) so he doesn’t move his money through using checks.
(cash in them checks can sound like “cashin in them checks”) He is getting alot of money from checks, and he doesn’t have to move, he just cashes them in.
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