In "The House of Hades" by Rick Riordan, a conversation about surfing prompts a moment of unexpected joy for Annabeth. Her laughter creates ripples in the water, contrasting with the dark, oppressive atmosphere of Tartarus, a realm typically devoid of happiness. This spontaneous expression of joy makes her reflect on the bleakness of her surroundings.

Annabeth finds herself contemplating the rarity of such laughter in a place like Tartarus. It signifies a brief escape from despair, highlighting the importance of joy even in dire circumstances. Her doubt about whether anyone has ever laughed there before underscores the heavy weight of their situation and the power of fleeting moments of happiness that can be found amidst darkness.