Kogi beef is the term for Korean BBQ, but here Gambeezy is talking about the slang term “beef” as in an argument. Since the guy is Asian though (we all know how much Childish loves the Asian girls) it’s gotta be an Asian beef.
Extra layers! Kogi beef means “beaten meat” because the beef is tendered by pounding it, i.e. CG took this guy’s girl, so now the guy has to masturbate (beat his meat).
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