Term coined by the notorious DJ Avery. Can be used in any situation, usually to convey approval. Emphasis on the "Son" is key.

A swimmer

and exclamation made as one does something, especially something awesome, not necessarily good though

it may also have the variation Yeah Sonny Son

A term used in greetings, encouragement, agreement, or congratulations to homeboy. It is a friendly term and used for fraternal inclusion.