If you gon' rap please stop, run away
Go home, flush ya crack then, give ya gun away
Cause the rules is written down, in invisible ink
Just consider what the critical think

from Styles P – Alone in the Street Lyrics on Rap Genius

Meaning

It’s “If you gon' rat”, whoever posted this made a mild error. Essentially, this means if you’re going to cooperate with law enforcement and rat out your companions if you’re arrested for drug dealing or committing some other crime, don’t ever start to begin with, because the rules are written down in “invisible ink”. Rule no. 1 of the streets: No snitching, ever.

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