Wonderbread nigga

Best definition
Wonderbread nigga
White people who tend to happen to have the strange delusion that they are a huge mandingo-like nubian motherfucker nigga

from the streets. In reality, under this hard mean muggin facade, these people are merely whitebread in nigga disguises.

A: Man, look at that one white guy in that group of black guys on the corner. He must be the hardest guy in the whole gang just to stay living.

B: Nah, man, he just a wonderbread nigga.