And she love to hurn the berb, I mean burn the word
This is a reference to the line:
Chance mixes the first letters of [b]urn and [h]erb, giving you hurn and berb. “Burn the word” is smoking marijuana.
He uses a swapping of the letters as a tongue in cheek self censorship, which is why he says “burn the word” taking back his last line.
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