In this exchange, Julian expresses his confusion and frustration about the language and phrases used by others around him. He feels that he is unable to understand the casual references being made, likening it to a foreign language. His questioning of a specific phrase reveals his struggle to grasp the cultural context that informs their conversations.
Grace responds by clarifying that the Hard Rock Café is simply a restaurant known for its themed environment. Julian's subsequent sarcasm underscores his disbelief that people would choose to dine somewhere associated with such a hard and unappetizing description of food. This interaction highlights the challenges of communication across different social contexts.