The wierd thing about the term 'Wigger', is that it was originally applied to Black guys who 'tried' to be too white. Like a black guy wearing nothing but Eddie Bauer or something like that. Oprah did a whole show on "Wiggers" where it was blacks trying to be white.
Maybe we don't have enough black people here, so we don't apply the slang properly? It definitely works on those skinny white try-hards who's pants are always falling down... so I don't mind the use of it