Beg her to play with herself while you watch
From Create Your Own Story
She doesn't need much coaxing. One hands lifts one of her giant breasts to her mouth, and she suckles at her nipple, moaning. Her other hand settles between her legs, and she use her index finger and her ring finger to spread herself open slightly. She's so wet, she's glistening, and the pink inner folds of her box look tight and inviting. She playfully toys at her hole, dipping the pad of her middle finger inside just to sample her wetness, before leading it up to touch her clit. "You like that?" she asks. You nod.
She lowers her other hand, letting her breast fall and bounce playfully. While one hand works her clit, the other is used to slide a middle finger deep into her box, and you can see exactly how tight she is. The finger is swallowed deep, but pursed completely by her pink spongy hole. She groans as she works the finger in and out. "I want your cock inside me," she whispers. "I want you to take me, however you want, but I need your dick in my body."
You can barely take much more, and you decide to comply.