The siblings, driven by a forbidden desire, sneak into the closet, their hearts pounding in unison. Michelle, her breath hitching, pushes her brother against the wall, her hands feverishly unbuttoning his shirt. His cock, already hard, strains against his jeans. She pops the button, the zipper echoing in the small space, and reaches inside, wrapping her hand around his shaft. He groans, his hips moving in rhythm with her strokes. She can feel his pre-cum slicking her hand, and she rubs it in, her own pussy throbbing with need. They're so lost in each other that they don't hear the door creak open, their parents standing in the doorway, shock and anger etched on their faces.