And who are you to be talkin 'bout, what I be doin man?
I'm the upper echelon, who is you to evaluate my performance?
How would you like it if I came to your job
And evaluated your performance? {*laughter*}

from Talib Kweli (Ft. Kendra Ross) – Wait For You Lyrics on Rap Genius

Meaning

Kweli is well regarded as the best, so he has no boss to do an evaluation of him like many of us do.

For someone to give Kweli rapping advice would be like for him to come to your job as an accountant and give you advice on how to do that.

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