gon
part.part. a short way of saying 'going to' when you are talking about the future. You use it in very casual speech or when writing like you speak.
part. a phonetic contraction of 'going to' used before a bare infinitive to indicate future intent or certainty. Common in African American Vernacular English and informal spoken registers globally.
I'm gon' tell him the truth tomorrow.
If you keep acting like that, things aren't gon' end well for you.
The artist's lyrics reflect a specific dialect where 'gon' replaces the standard future marker, creating a rhythmic flow that feels more authentic to his upbringing than formal grammar would allow.
Clipping of gonna. Compare Middle English gon, dialectal gan, Dutch gaan.
From Ancient Greek γωνία (gōnía, “angle”). More in Wikipedia at gradian § History and name.
Clipping.
Used as an auxiliary-like marker before a verb; almost always preceded by a form of 'be', though the 'be' is sometimes omitted in casual speech.
I gon to the storeI'm gon' go to the store'Gon' replaces 'going to', not the verb 'go' itself; it must be followed by a base verb.