We'll rub it in, every club you're in will have you
Black balled and make sure you never rap a-fuckin-gain!

from Eminem (Ft. Dr. Dre) – Say What U Say Lyrics on Rap Genius

Having someone “black balled” means having them rejected

The term is derived from old voting systems; members of a small group or club would place a ball in a covered box, white meaning yes, or accepted, black meaning no, or rejected

To help improve the meaning of these lyrics, visit "Say What U Say" by Eminem (Ft. Dr. Dre) Lyrics and leave a comment on the lyrics box