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.
"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."
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....