"You're going to love this, grandpa," she purrs, buckling the harness around her waist. The dildo, massive and intimidating, bobs between her legs as she moves. She slaps it against his ass, making him yelp, then spits on it, rubbing the saliva in with her hand. She pushes it against his asshole, feeling him tense, then relax as she applies pressure. Slowly, inch by inch, she slides it in, filling him completely. He moans, a sound of pure, debauched pleasure, as she begins to fuck him, hard and fast, just like he loves it.