Beefing with the BM
Beefing with the boss, got fired by the GM

from Nickelus F (Ft. Drake) – Number 15 Lyrics on Rap Genius

Meaning

The “BM” and “GM” here stand for “baby momma” and “general manager” respectively. This rhyme is reminiscent of Jaz' classic line on Jay-Z’s “Nigga What Nigga Who”:

Fucking BM’s on the road
When you had to be in bed at the PM

To help improve the meaning of these lyrics, visit “Number 15” by Nickelus F (Ft. Drake) Lyrics and leave a comment on the lyrics box