In the dim light of the closet, the siblings' breaths grow ragged as they press against each other, their clothes a thin barrier. Michelle's hand trembles as she reaches for her brother's zipper, pulling out his throbbing cock. She strokes it gently, feeling it pulse in her hand. Her brother mirrors her actions, his hand slipping under her skirt, finding her wetness. They gasp in unison, their bodies tensing as they approach the edge. Suddenly, the closet door creaks open, flooding the small space with light. They freeze, their hearts pounding, as their father's stern voice echoes, "What are you two doing in here?"