In the book "Black List" by Brad Thor, the author uses humor to illustrate the difference between casual friends and true friends. The quote suggests that while many people may lend a hand in tasks like moving, a real friend is someone who would go to the extreme of assisting in something as serious and morally questionable as moving a body. This exaggeration highlights the depths of loyalty and support that can exist in close relationships.

By employing a joke about friendship, Thor captures the essence of trust and camaraderie. It implies that true friends are those who stand by you in difficult or even dire situations, showcasing a bond that goes beyond everyday interactions. The lighthearted approach to a dark topic serves to enhance the seriousness of loyalty in friendships while remaining approachable and entertaining.