They brains in they ass, what they talkin' with
You can smell it on they breath, they just talkin' shit
Get a tic-tac and get back
Or get jacked.... Rack-a-lack

from Yasiin Bey – Bey Lyrics on Rap Genius

Meaning

“Brains in there ass” is a hard intelegent way of saying that they butheads and that haters talk out of there asses. He say the talk out there ass, That they talk so much shit its starting to affect the way there breath smells. “Get a tic-tac” stop the shit talking. And get back, or die.

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