I'll split your head to the white meat - poultry

from Tony Touch (Ft. Crooked I, Joell Ortiz & Royce Da 5'9") – Slaughter Session Lyrics on Rap Genius

Meaning

A rather macabre threat to crack your skull open to reveal your brain, that is often a shade of white.

White meat can also refer to pale meat such as poultry, veal, and rabbit

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