Tell her to grind on it and see if she can get off like that while begging.

Theo regards Kelly's trembling form with a mixture of amusement and satisfaction. "You want to cum so badly?" he taunts. "Then work for it. Grind yourself against the Sybian. Let's see if you can get yourself off without the vibrations."

Kelly whimpers at the command, her hips already starting to move of their own accord. She rocks against the smooth surface of the now-silent machine, desperately seeking friction.

"Please," she gasps, her voice raw with need. "Please, I need to cum. I'll do anything!"

Her movements grow more frantic, the muscles in her thighs straining against the ropes as she grinds herself down. The nipple clamps tug sharply with each motion, sending jolts of sensation through her overwrought body.

"I can't... it's not enough," Kelly sobs, frustration evident in every line of her body. Yet she doesn't stop, continuing to writhe and squirm atop the Sybian. "Please turn it on, please! I'm begging you!"

Her pleas grow more **** and incoherent as she struggles, caught between the maddening need for release and the humiliation of her predicament. Kelly's face is a mask of desperation, tears streaking her flushed cheeks as she begs shamelessly for the cameras.