Burnish Boy Share definition Flag whack group of adolescents who attempt at rapping and dancing. and simultaneously egg on gangs to beat the crap out of them. Look at that moron trying to rap, must be a burnish boy. Burnish Boy by JayRiddik March 30, 2010 0 0 Get merch Get the Burnish Boy mug. Buy Now — $32.95 See more merch