The quote humorously contrasts the types of friendships one can have. It suggests that while a good friend may assist you with ordinary tasks, a true friend is willing to help you through far more serious, even illegal situations. This illustrates the depth of loyalty and camaraderie that can exist in true friendships.
Kelley Armstrong's book "Omens" uses this quote to emphasize the themes of loyalty, trust, and the complexities of relationships. In a world where challenges can sometimes be extreme, the quote highlights the unique bond that develops among friends who are willing to go to great lengths for one another.