I was in a dark room,
He was literally in a dark room or a party when he had fallen into pressure and drank. He’s describing the surroundings for us to picture or reminisce a similar vibe or alcohol abuse we had in a club or house party, zombiing around in a dark environnement with music pounding through our head.
Similarly, the “dark room” reference is found on Poetic Justice (explained by Kendrick here), as a metaphor for the mAAd City he grew up in.
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