"Black sheep is a derogatory colloquialism in the English language meaning an outsider or one who is different in a way which others disapprove of. This can be someone who has been shunned by others, or one who has chosen to be an outsider, due to actions and aims that separate them from the rest of the people or 'flock.'"
[COMPLETE] They say that there are no white horses - those that we think of as white are really just a faded and deceiving grey. Names can be misleading, and definitions can be false, and yet through the maze of artifice and deceit, we might just find something true. When Harry returns for his last two years at Hogwarts School, he will find that boundaries are shifting and not everyone is who he thought - including himself. He will have to learn that change is like those elusive white horses: swift, beautiful and irretrievable.