D3k520's big cock is rock hard as his half-sister, the gorgeous blonde Sexdoll 520, sucks him off. She takes him deep, her lips stretching wide around his girth, her tongue licking his shaft. He grows even harder, his cock throbbing in her mouth. She looks up at him, her eyes filled with desire, and he can't hold back any longer. He grabs her head and fucks her mouth hard, his cock hitting the back of her throat. She gags but takes it like a champ, her hands cupping his balls, encouraging him. Finally, he pulls out and cum bursts from his cock, coating her hands, which she quickly brings to her mouth, licking and swallowing every drop.