In a dimly lit room, a sister's curiosity leads her to sneak into her brother's bedroom, finding him naked and stroking his hard cock. She watches, entranced, as he jerks off, his thick dick glistening with pre-cum. Unable to resist, she kneels before him, taking his length into her mouth, gagging as he forces himself to the back of her throat. She gags and chokes, tears streaming down her face, but she's determined to make him cum. He grabs her hair, fucking her face roughly until he finally explodes, his hot cum filling her mouth. She swallows greedily, loving the taste of him.