Screw Sophie with the dildo

Sophie eyes the dildo you're holding nervously.

“Lie on your back, slut,” you command.

Sophie obeys; because her hands are cuffed in front of her, she has to use her leg muscles to lower herself carefully onto her back. Once on her back, her legs still bent under her, she stretches her arms over her head, exposing herself to you.

It's a delicious sight. You wish you'd known about this hidden side to her personality a long time ago.

You slide the dildo into her pussy, letting it glide along her clit lengthwise until it's deep enough in that it straightens out. You slide it home, and the flared base is gripped by her vaginal muscles, holding it in place.

It's a rather big dildo, actually, and you're a bit surprised she took it all in so easily. Who knows, maybe she's been sleeping with the damned thing inside her when you're not around.

You flick the power switch and it begins to hum. Sophie lets out a startled moan, and then relaxes, her lips parted, her eyes closed, as the dildo vibrates against her vaginal walls.