The ropes drawn tight between her legs trapped her clit between them. Her body strained, but even the smallest twitch of her hips nudged the vibrator away from her. She could only hold herself there, control the lewd thrusting her body wanted to engage in, and receive. No grinding herself against it, that would push it away from her, no chasing after it at all. Just bound there, muscles cramping up from how tightly she held herself together, receiving the vibrations.
(Source: hisbabygirllucy, via mentaldom4u)