A mud shark is any white girl who, due to peculiarities in her psyche, dates only black men. There are two distinct types of mud sharks:
Type I Mud Sharks (the most common) are fat girls with little or no education who, rather than dating a white guy from the bottom of the heap, go for a mid range or low-end black man.
Type II Mud Sharks (less common) are good-looking girls (usually blonde) who are trying to make a statement by dating a black man. Usually type II's are trying to make daddy mad.
Man, yo' mamma's so ugly she could be a type I mud shark. How's your brother Tyrone doing?
Pay more attention Cheesy.
You are giving the definition for mudshark, the word in contention here is mudscuttle.
mudscuttle
A White American who seems intent upon single-handedly making reparations for every wrong Black Americans have suffered at the hands of the White Man. The keynote characteristic of the mudscuttle is that he will reflexively ascribe nobility of character to Black folk. The mudscuttle imagines his behavior indicative of enlightened sophistication, when the behavior is instead a sinister form of prejudice in which bigotry has been replaced with intransigent advocacy. A mudscuttle boss will brazenly assign choice assignments to Blacks and turn a deaf ear to the most rational requests from Whites for parity in the workplace. It is typical of the mudscuttle to express nauseating levels of adoration for famous Black people, wildly disproportionate to actual accomplishment.
I'll never get promoted! My mudscuttle boss gave the last three promotions to Shaniqua, DeMontross and M'Kell!
You could probably characterize UB as a Mudscuttle, but he only does it for the kicks, in reality he hates blacks and anyone that isn't white. All Stormfront Veterans are like that.