A nigga that becomes the bigg thang that white folks can't get enough of, then they get tired of him and he fades away. Tyson was a bigg thang and faded, Woods was a bigg thang and is fading, Obama is the bigg thang and he will fade too . White folks is very fickle and rush from the latest wonder nigga to the next bigg thang. It's hard for a wonder nigga to stay on top.
A wonder nigga is a nigger you look at, and wonder what all the fuss is about.