Shortest form of what's up? Origins of word come from the streets of Brooklyn when a HS fight in 1994 between two thugs occured, one thug speaking out of rage said quickly whatta, the other responded w'up son w'up son!
W'up son? W'up w'up.
by Ayche from RapLogs.com December 7, 2005
Get the w'upmug.