From WikiPedia
Uncle Tom is a pejorative term for a black person who is perceived by others as behaving in a subservient manner to white authority figures, or as seeking ingratiation with them by way of unnecessary accommodation.
We need an opposite. We're not talking about a wigger here or describing a feeling like White guilt or something but rather a term or phrase for a honkey White boy that just really loves niggers dawg.
I give you: Bro Tom.
I loves me some black people yo!

