Brother and sister share a bed, but tonight, their usual teasing goes too far. She catches him mid-stroke, his cock hard and ready. Intrigued, she decides to give him a proper release. Kneeling beside him, she takes him deep, her full lips stretching around his girth. He tries to hold back, but her relentless suction and tight grip push him over the edge. He erupts, filling her mouth, and she eagerly swallows, licking her lips clean.