Combinate the 2 words: A well-to-do black person with underlying ghetto intetions. Usually their in denial of their up-bringing or family true background. When it sneaks out from them then their "bou-ghetto".
It can also be an adjective. It can describe a certain flare in fashion or it can be descriptive as in someone's behavior or actions.
Female 2: "Wrong?! That looks very bou-ghetto, you can't wear that in Baltimore, she needs to take that back to the ghetto!"