Call me Chancellor The Rapper, please say "The Rapper"

from Chance The Rapper (Ft. BJ The Chicago Kid, J.P. Floyd & Will Miller) – Good Ass Intro Lyrics on Rap Genius

Meaning

Call him Chancelor—that’s his government name.

Chance’s line is an addition to the trope of rappers wanting you to say their proper title, for instance:

Lil Wayne
Weezy F. Baby, please say the baby

Ab-Soul
OD flow, A-B-Soul, if you forget the dash you uh wish you didn’t

Mr Muthafuckin' Exquire
What’s my name bitch? (Mr eXquire)
Don’t forget the muthafuckin, without that it’s nothin'

Edit: Call him…

https://twitter.com/chancetherapper/status/432220890390990848

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