Yo 

GANGSTA SLANG
In that case "yo" is a short form of the possessive pronoun "your".

Fuck yo ass, bitch!
I want all yo money or I gonna kill yo momma.

Yo by blackhole February 17, 2004

yo 

form of saying hello, or what's up?

yo!

yo by Jessica June 7, 2003

yo 

reduction of "Years Old"

12YO girl stabs sex-hungry boyfriend to death

yo by Mikemike April 9, 2006

yo 

Everyone knows about the concepts of when "yo" is used, in this concept, it is the simple greeting, except with much more swag (something "we" asians got). Although "yo" has been used a lot more frequently by your average gweilo, persons don't know where it has originated from.

The term "yo" actually came from the word: "anneyeonghaseyo". "Anneyeonghaseyo" is korean for hello, in a formal matter. Note the last 2 letters, yo. Neti's got sick of such a long-ass greeting, and moved on to a more shorter greeting: "yo". Because koreans are either so cool (male) or so cute (female), their slang was passed on to the people of today.

Dec. 5, 2011
Yuri: Anneyeonghaseyo!
Me: Yo!

yo by unhappy panda December 5, 2011

yo 

1. a greeting
2. a general word that can be put at the end of any sentence for emphasis

1. yo dude, whats up?
2. i NEED to get this paper done, yo!

yo by risewiththesmoke February 11, 2009

Yo 

the guy who's so "g'd up" he can't say hi, hello or how ya' doin'?

what's going on zach?
yo!

Yo by ninguy December 14, 2003

yo 

The word 'yo' can be added to almost any sentence to add style. It can also mean 'hello'.

What's the delio, yo?

Yo! What-up?

yo by person yo-yo December 19, 2003