Kourtney's big booty bounces across my lap as she takes me deep, her sister's husband watching in ecstasy from behind, his eyes fixed on our entwined bodies. Her tits jiggle with every thrust, her ass cheeks swelling like ripe fruit as she rides me mercilessly. As the three of us become one, Kourtney's sultry voice whispers sweet nothings in my ear, sending shivers down my spine.