Here are a few examples:
1. "You already know" => This can mean "Yeah, that's right" or "I agree"
2. "Bet" => This is most often used in the same way as "Okay". It usually ends a conversation.
Here's an example:
Adam: "Hey John I will see you tomorrow, okay?"
John: "Okay, bet!"
3. "Aiight" => "Alright"
4. "Brand new" => This is a way of describing someone who is acting snobby, stuck up or someone who thinks they are better than everyone.
Here's an example:
"Wow man, you just got all brand new on us since you got that new job, you don't even talk to us anymore!"
5. "Flexin/Stuntin" => These two words mean the same thing. It means to show off something you have.
Example:
"Wow, he sure is flexin' that new watch".