Terms:

 1) Belieber: (adj) To describe a person who is not just a fan of Justin Bieber.
   People who use it: Justin Bieber, news reporters, Beliebers, and magazines.
   Example: I'm a huge belieber and always will be until the day I die.
  First Used In: 2009

2) Breh: (noun) Brothers.
    Example: My breh stayed with me through thick and thin as I was growing up.

3) Cut: (noun) To put someone down.
  Example: I, as a fighter will cut someone if I have to.

4) Deuces: It means goodbye or peace.
 Example: I'm leaving this place "deuces" everyone.
People who use it: Chris Brown
How it got started: http://www.youtube.com/watch?v=BvbjEovRIgA


5) Directioner: (adj) A major fan of the British boy band One Direction.
 Example; Directioners are showing up all around the world even in America.
 First used in: 2009

6) Fade:(verb) To fight or square up.
    Example: I think that the time has come for me to fade here now.

7) Gnarly: (adj) It means extreme or cool.
    Originated from: The world gnarled.
    First Used In: In the 80's.
   Example: That teacher's dress is pretty gnarly dude.

8) Groovy:(adj) Highly simulating or attractive; excellent.
    Example; That girl looks real groovy today.
    First Used In: The 80's.
    People who use it: Hippies used it.

9) Hip: (adj)Someone who is with the fashion up keep of their generation.
 Example: That guy is so hip, do you agree?

10) Homie: (noun) Means homeboy or groupie.
  Example: Hey, what's up homie?

11) Legit: (adj) To be honest; legal.
    Exapmle: If she's not legit, I won't work with her.
    People who use it: Teenagers under the age of 20.

12) Mahomie: (adj) A fan of Austin Mahone.
  Example: I, personally am a mahomie and will be for a long time.
 People who use it: Fans of Austin Mahone.
 First use: It was first said in 2008.
Who is Austin Mahone? http://www.youtube.com/watch?v=8iaZnM56Pac

13) Posted: (noun) Hang out or to stay at one place for a period of time.
  Example: I was posted at my friend's house for a Summer.

14) Sprung: (noun) It means to be obsessed with someone or to be in love with a person.
  Example: Rachel was sprung with one of her friends that she never thought about before.

15) Vas Happenin: (noun) It's also for "what's happening?"
  Example: Zayn will say "vas happenin" to one of the band mates.
 Who uses it: Zayn Malik from One Direction
 First used in: 2012
 How people heard of the saying:  http://www.youtube.com/watch?v=iGjRI8DYeA0

16)Wagon: Another term for shopping cart, commonly used in the South
Example: My Mother made me go grab a wagon at the grocery store.

17)Y'all: (adj) A shorter way to say "you all" commonly used in the South
Example: Would y'all like to go for some frozen yogurt?
 
18) Yoyo: (noun) "Your On Your Own" or "Your Only Young Once"
  Example: I guess since we are no longer boyfriend and girlfriend yoyo; so goodbye.