Lean hard when I turn the whip
This can have several meanings:
While he is cooking Crack (whipping) the fumes are getting him really stoned (lean hard).
While cooking Crack he could be drinking lean.
Also he could be drinking Lean and getting drunk while he is riding his car (whip).
Or, he could be lean back in the seat of the car while driving.
The last two are less likely due to the fact that he is talking about drugs, so I’d go for the first one.
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