In the throes of adolescent lust, Sandra and Bianca find themselves entwined, their bodies slick with sweat as they grind against each other, their moans filling the room. Sandra's fingers find Bianca's wet slit, and she rubs furiously, her own pussy aching for release. Bianca's small hand wraps around Sandra's thick, hard cock, and she strokes it, her thumb rubbing the pre-cum over the head. They move in sync, their bodies locked together, until Sandra can't hold back any longer. She cums hard, her cock pulsing as it shoots load after load onto Bianca's stomach, leaving her gasping for breath and covered in her sister's cum.