look up any word, like b4nny:
 
1.
and exclamation made as one does something, especially something awesome, not necessarily good though

it may also have the variation Yeah Sonny Son
"Dude I finally asked that girl out"
"Yeah Son!"

"Damn that stuff smells hella bad"
"YEAH SON!"
by chris watertstraat April 11, 2008
 
2.
Term coined by the notorious DJ Avery. Can be used in any situation, usually to convey approval. Emphasis on the "Son" is key.
Person 1: "So whats the deal, you headin' down to Dubbage tonight?"

Person 2: "Yeah son!!"
by Smashtactics September 05, 2010
 
3.
A term used in greetings, encouragement, agreement, or congratulations to homeboy. It is a friendly term and used for fraternal inclusion.
by CountSmackula August 10, 2010