"That's right, sis," your sister says encouragingly, her eyes locked on yours. "You know how good it feels... Show me what you can do." She wiggles her hips against your hand, urging you to touch her deeper, harder. As you begin to obey, she moans softly, arching into your touch.
Your Mom watches intently from the side, a satisfied smile playing on her lips as she watches the two of you together. "That's it,"