Runnin' them ghetto streets, I ain't cookin' up nothin'
But I got that tea kettle on side of me, that metal on side me
Kendrick runs the streets but he doesn’t have to move drugs (“cooking” i.e. cooking drugs). The “tea kettle” is an allusion to “heat” or a gun (metal). There’s wordplay with cooking/kettle/heat, all allusions to heat and metal
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