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1.
A Gwen Stefani type person with qualities of; one part gangsta, one part Japanese wannabe and one part transparent white girl.
This term was developed in the early 2000's in order to determine a difference between catchy words of nonsense from bikini wear forty year olds from actual music.
"Wa gwaan?"
"Oh I just saw this really wigganese girl. She continued to spell BANANAS, I don't know what her problem was, but I just had to join in."
by Darryl April 20, 2005
 
2.
the combination of three races: Asian, Black, and White... in other words the offspring of lil wayne, jackie chan, and jeniffer aniston. A mash up of different ancestry.
Dude, that kid is such a wigganese ...you cant even tell who the parents are....
by blargness69 October 07, 2010