Peter, the stepbrother, takes charge as Lilly, his curvy stepsister, squirms in anticipation. He teases her, making her beg for his thick cock. Starting in doggy, he pounds her tight pussy, her moans echoing through the room. She climbs on top, riding him cowgirl-style, her juices dripping down his shaft. He flips her over, missionary-style, driving deep and hard, her body convulsing in multiple orgasms.