"Grandpa, you're so naughty," the teen giggles, her voice laced with excitement as he pulls her onto his lap, his erection obvious through his pants. "Shh, little one," he hushes, his hands roaming her body, "we shouldn't, but we will." He unbuttons her shirt, revealing her young, firm breasts, his mouth descending on one rosy nipple. She moans, her head falling back, her hips moving instinctively against him. He slips a hand into her shorts, finding her wet and ready. "You're such a bad girl," he murmurs, his fingers sliding in and out of her tight pussy, "but you feel so good."