In the cramped closet, Shannon's sister and brother find themselves entwined, her luscious tits pressed against his chest. She's trying to reach her shoe, he's after a forgotten toy. They're both surprised, both flustered, but neither moves. Her breath hitches as she feels his cock twitch against her thigh. She looks up, meets his gaze. He swallows hard, his Adam's apple bobbing. The air is thick with tension, with the promise of forbidden fruit.