Oh damn, that is a video I would love to see.  😀
This makes me think… I would love to see (or be) a sub, teased relentlessly to the edge for hours or days, tied up not quite in reach of a vibrator, sybian, or other toy. The fact that she isn’t on the toy yet made me think this. Truss up one frustrated sub in a way that they can get stimulation if they REALLY TRY, but make the source of stimulation so far away that it is nearly impossible for them to get to, and, once that have contorted and strained their body, impossible to maintain that posture for more than a short time. Tell them they can cum… If they do it themselves. Then watch the struggle become more and more desperate.
I know she’s in reach of this toy, the picture just made it occur to me.
girl-on-edge has an interesting idea there, and here’s what it made me think of: a theremin.
What you do is, you set up a magnetic induction switch under the Sybian, one that controls its rate of vibration. It vibrates the fastest when the girl’s body is held at a very precise distance from it–say, when the tip of the dildo is juuust inside her. As she lowers herself onto it, and toward the more intense vibrating ridge, the sensor makes it slow down… slower… slower… until trying to press herself down against the toy makes it almost stop completely.
Here’s the catch: the device has an override switch too, built into her collar. If someone else touches that ring on the front, completing a circuit, it goes into overdrive regardless of where she is. So her controller can walk in, unzip, grab her throat and pull her mouth forward to be used, and she’ll be stimulated quite thoroughly as long as she’s of service.
She’ll get so close. So close. But if she seems to be getting distracted at all, the hand moves from the metal to the leather of the collar, leaving her to edge and work frantically with her mouth to try to earn the vibration back again. It doesn’t take long to get off when you’re standing above, watching her, using her.
Her controller cleans up, wipes the hair from her sweaty forehead, and leaves. And then, as soon as she’s alone, the struggle to find a workable position–pussy clenching, legs cramping, arms helpless to hold her up long enough–begins again.
She’s allowed to come. It’s explicitly permitted. If only she could just get a little closer…