Like a Lexus, if driven wrong it's sure to hurt you
If a Lexus is driven wrong, it will hurt or kill you in its path. Much like Jay’s mind.
He is also referring to the circle that wraps around the “L” in the Lexus logo; the sick thoughts are the circle, wrapping around this Luxurious but dangerous Life (the L) that, if steered wrong, will lead to certain doom.
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