I'mma take my time, I'mma master it
You should be mindful of a mastermind

from Kendrick Lamar (Ft. ScHoolboy Q) – The Spiteful Chant Lyrics on Rap Genius

Meaning

Considering that he takes time with his music, creating a great product, you should certainly respect it.

He is patient while mastering his craft (rap) and others should take notice of the time and effort he puts into his music and respect the great work of art this person with outstanding intellect created.

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