What you know about that, I'm balling like leukemia

from 2 Chainz (Ft. Meek Mill) – Stunt Lyrics on Rap Genius

Meaning

A bald/ball pun by the hair weave killer. Leukemia patients receive treatment that causes hair loss. .

Looks like Drake beat 2 Chainz to this kind of pun:

If I was at the club, you know I balled, chemo

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