In the steamy bathroom, stepsiblings catch each other off guard. She's lathering up, bubbles clinging to her curves. He's hungry, watching her ass sway as she towels off. Unable to resist, he slides in behind, cock hard against her wetness. She gasps, her body tensing then melting into his. He grinds against her, fingers finding her clit, making her squirm. She reaches back, guiding him in, and they fuck standing, water cascading around them. His cock throbs, and he pulls out, painting her back with his load.