Vernacular play is endless, this ain't the shit for beginners

from Alex Ruffin (Ft. Deondre Jones) – Fisticuff (Prod. Nonsense Beats) Lyrics on Rap Genius

Meaning

This was probably a line that was supposed to suggest Jones is extremely lyrical. However, vernacular means:

The native language or native dialect of a specific population, as opposed to a language of wider communication that is a second language or foreign language to the population, such as a national language, standard language, or lingua franca.

Which I suppose could just be taken as ‘word play,’ but in a literal sense, would make no sense.

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