A detailed study is reported of the linguistic adaptation of a white girl in a predominantly black school in Camden, New Jersey. The girl is a cultural heroine in the area, having earned the admiration of both blacks, and Puerto Ricans by her ability in fighting, dancing, talking, and dealing with the opposite sex. Subjective reaction tests show that most people hear her as black; whites hear some white influence, but black listeners hear nothing but black patterns. A detailed linguistic analysis shows that she has overshot the rules of the Black English Vernacular in five cases, and developed a special grammar of her own, but that this has not disturbed the effectiveness of her social adaptation. It is concluded that, in order to survive, the subject has nearly assumed the identity of the blacks in her environment. (Author/AMH)