In the dim light of the closet, Michelle's eyes meet her brother's, and they both know they're about to cross a line. She reaches out, tentatively touching his hardness through his jeans. He shudders, his breath hitching as she unzips him, freeing his cock. She licks her lips, her heart pounding as she takes him into her mouth, savoring his salty taste. He grips her hair, guiding her as he fucks her mouth. Meanwhile, he's exploring her, his fingers finding her wetness, her clit, making her squirm and moan around his cock. They're lost in their taboo dance, their bodies moving in sync, their moans filling the tiny space.