In the quiet of their shared bedroom, a sister sneaks in to surprise her sleeping brother. She's been craving his cock all day, and tonight, she's decided to take what she wants. She straddles him, her hands gently guiding his hardness to her lips. She takes him deep, her tongue swirling around his shaft, her throat constricting as she takes him in completely. He stirs, his eyes fluttering open to the sight of her sucking him off. She grins, her eyes watering as she takes him deeper still. He grabs her head, fucking her mouth until he cums, his hot seed spilling out around her lips and down her chin. She licks it up, smiling, before climbing onto his cock for a night of sisterly loving.