Nicki is dissing Keys and Lil' Kim here.
She’s saying that she has the money to pay the IRS for Keys' healthcare because she’s destroying her with these lyrics and is going to need to be healed after this blow.
Nicki is also making a lot of money, which the government taxes to pay for the new national healthcare system.
And Kim has a member of her crew named IRS, so she’s playing into his name.
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