Y.S.G.D.F.S. 

You're So God Damn Freakin' Stupid.
doesn't have a pronounciation, as usually doesn't need to be sped. Most commonly refers to sped people.

danoz the sped girl: If i had two cheeses and i turned 18....highlighters?
lara: go home.... *YSGDFS*

Y.S.G.D.F.S. by inbred. September 22, 2004

Y.A.B. 

Young Ass Bopper, a YOUNG female between the ages of 16 & 22 that is ready for sex at the drop of a dime.

"Look at that Y.A.B. yo! She ready!

Y.A.B. by The Legacy Boyz August 30, 2007

Y'oh Yeah 

Very good; having joy, pleasure.

Y'oh yeah! The Simpsons is on

Y'oh Yeah by Wangy Poodle April 8, 2003

y cheat cheater 

Gaming Related. A simple question posed by someone to ask how to do something that is known in the community as a cheat. Or a sarcastic reply to a innocent question.

ex1.
<newnewb> Anyone know if you can bind a Rocket Jump Key ?
<progod1> y cheat cheater???
<progod2> y cheat cheater
<progod1> lowest of the low
<progod2> scum
<newnewb> Shame.

ex2.
<newnewb> how do you bind fire?!!
<progod1> OMFG!!?"2!!111ONEONE1one! y cheat cheater!!!"!"!"!£
<progod2> die!!!?"!!!

y cheat cheater by ksp July 28, 2008

y'all 

a word most commonly used by Southerners, lower to middle class blacks, and some people in the lower midwest (Ohio River Valley, Kansas, Missouri, etc.) Is a contraction of you all, which is the proper term.

Southerner: Hey, y'all!!! How arrrre yuh doin!?

y'all by A Hoosier May 24, 2005

Y. Laa 

What you say after doing, or watching someone do, something stupid/lame.

"Y. Laa" = "You Lame Ass"

You and a group of friends witness someone doing something stupid and you all shout, "Y. Laaa!!!" at him but he doesn't know what it means or know if you are shouting at him or not. (Lots of fun.)

Y. Laa by Crystal Eve August 29, 2007

y'all come 

An invitation to visit. Can be used as an imperative but also as a noun.

Mama sent out a y'all come to the relatives.

Y'all come to supper at our house some time.

y'all come by Southern Heritage September 18, 2013