The quote from Patricia C. Wrede's novel "Sorcery & Cecelia: or The Enchanted Chocolate Pot" reflects a humorous and somewhat exaggerated determination to feel a certain way, in this case, having a headache. The character seems to be so intent on experiencing this discomfort that they are willing to resort to extreme measures, suggesting a playful take on the concept of self-inflicted challenges and the lengths to which one might go to fulfill a desire or curiosity.
This line captures a whimsical tone that permeates the book, illustrating the author's knack for blending humor with fantasy elements. The absurdity of hitting oneself with a rock to induce a headache serves as a metaphor for the quirky and often unpredictable nature of the story, where characters embark on eccentric adventures filled with magic, intrigue, and witty dialogue.