best of luck

Wishing someone the "best of luck" or "all the best" is a practice often employed by the middle class as a polite alternative to the colloquial "fuck off". In all recorded instances of its usage, no one who has ever uttered this expression has actually "wished" anything positive on its recipient. In almost all cases, the utterer secretly "wishes" that the recipient would not only disappear, but stop existing as a whole.