In Garth Nix's book Lirael, the quote explores a moment of self-reflection and identity. It questions the nature of the person or entity being addressed, highlighting feelings of frustration or confusion about their true nature. The line implies a deeper inquiry into what defines a person beyond surface-level traits or behaviors.

The quote also suggests a sense of disappointment or irritation, perhaps stemming from someone being perceived as insufferably rude. It underscores the complexity of understanding who someone really is, especially when their outward actions seem at odds with other aspects of their character or identity.