Definitions by JayXSta

What's really up? 

What's new; What's going on? wussup

:What's really up?
:Nothing

What's really up? by JayXSta December 15, 2004

Def up 

Means "that's what's up" which means that's what's good. If someone says "That's def up then it means that it's what's cool or phat or tight or sometimes in style.

:You see that new video? That's def up
:Yea no doubt

Def up by JayXSta December 15, 2004