In the dim light of the closet, Michelle and her brother stand, their bodies inches apart, the air thick with tension. Michelle's eyes flicker to her brother's crotch, where a bulge tents his boxers. She licks her lips, her heart racing. "We shouldn't," she whispers, but her body betrays her, leaning into his touch as he reaches out to cup her breast. He swallows hard, his thumb brushing against her nipple, making it harden. Michelle's hand finds his cock, stroking it through the thin fabric. He groans, pressing into her hand, their bodies grinding together in a dance as old as time.