If you the shit, then I am sewer-rich
“The shit” is a term of endearment. Wayne allows his opponents to think they’re all-that, just so long as they know he’s better than them.
This line also be interpreted as “If you the shit, then I am sewerage” — both mean the same thing, but the likeliness of it actually being sewer-rich pertains back to Weezy’s first album Tha Carter on the song “Bring It Back” in which Tunechi says:
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