If you comin' for my head, then motherfucker get to bustin'

from A$AP Rocky (Ft. 2 Chainz, Drake & Kendrick Lamar) – Fuckin' Problems Lyrics 2 on Rap Genius

Meaning

Double Entendre:

If someone is coming at Drake, then they really need to do it instead of saying they will. Ironically, Drake sure didn’t seem to appreciate it much when Common did this and instead resorted to having his father intervene to avoid the battle
If a girl is on his dick, particularly the head, then he’s gonna get to bustin'

Peep the bust/ head wordplay

And we all know the rumors about Drake “busting” at Chris Brown’s head

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