"You mustn't move!" their father's voice echoes, but the siblings' bodies disobey, writhing in the dim light. Michelle's hand trembles as she guides her brother's massive cock to her entrance, his thickness stretching her untouched folds. Their breath hitches in unison as they begin to move, the taboo pleasure consuming them. The closet fills with their stifled moans and the wet sounds of their bodies joining, their guilt-ridden hearts pounding in sync as they chase their forbidden release.