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3.
Wubu2 is commonly used in internet chatrooms and chat programs and is a quick way of asking what someone has been up to.

eg.

What
U
been
up
2

or...

What
You
Been
Up
To?
Girl:Wubu2?
Boy:Not much, just on the computer mostly.
by Starz99 August 07, 2005
 
1.
What you been up to?
-hi
-hi
-wubu2?
-not much u?
by Anon May 03, 2005
 
2.
Msn speak:

stands for:

(w) - What
(u) - You
(b) - Been
(u) - Up
(2) - To

Basic Definition-
What have you been doing?
Jeff: Hello
Fred: Hello Jeff, Wubu2?
Jeff: NmYou?
Fred: I Went To The Pary.
Jeff: Kwl
by Maxine_Babie April 24, 2009