Undisturbed by their parents, they play sex games in the bathroom. A precocious little sister offers sexual service. She rubs her pussy lips, slippery with lotion and her juices, against his erect cock, and gives him a handjob while licking his nipples. The lewd, squelchy sounds of water echo through the bathroom. Then, while being watched by her sweet, gentle gaze, he climaxes and ejaculates. Thick cock juice splashes all over his sister's face.