Fuck a punchline, salute my muh'fuckin' grind
Crooked is saying that he is all about the quantity of quality, rather than just glimpsing up with a punchline from time to time. In this way asking from you that you salute his whole hard work (grind) not just a couple of bars that you deemed good, saying that his whole work is.
“Fuck punchlines, I’m good all over the fuckin' place”
Notice that “grind” is also slang for drug hustling, which relates to the previous bar about selling sour fast.
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