This is a reference to the end of Raekwon’s intro verse on Wu-Tang Clan’s song C.R.E.A.M. — it also appears in ODB’s Brooklyn Zoo, when he says “gimme my shit…ch-ch-bow!”
This is just a onomatopoeia of a gunshot. “Cha-blow!” or “cha-pow!” He’s saying for people will kill you for your chain.
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