Taking the Strain

The muscles in Sarah’s arms and legs were beginning to burn from the strain of holding their position. Her torso ached from holding her abdominal muscles tense against the ripples of pleasure constantly flowing through her as the vibrator continued to stimulate her pussy. She could feel a sheen of sweat covering her body, and her shoulders twitched in response to a drip of sweat tickling her spine as it slowly worked its way to settle between her buttocks.

Continuing to squirm against the plastic seat, Sarah was aware of how wet she was becoming between her legs. Breathing more heavily from both the exertion and the effects of the vibrator, her fabric face mask was drenched with her drool as she tried to draw air into her mouth around the ball gag.

All thoughts of escape, or who might be responsible for this, had already been replaced by the effort needed to hold her limbs together, and by the fear of what might happen if she failed.

A man, probably in his forties and wearing a suit walked past the window without looking in. But just as he was about to disappear to the left he seemed to be distracted by something, and stopped, turning to look directly at Sarah. His face was slightly confused and she willed him from behind her wet mask and dark glasses to help her. Just to call somebody, or to come into whatever this building was and alert somebody to what was going on in the window.

The man peered in through the window, perhaps trying to decide whether this figure on the exercise machine was a real woman or some kind of mannequin. Sarah continued to hold still, in spite of her trembling body. Another man, interested in whatever the businessman was looking at, also stopped on his way along the street and stared at Sarah. He said something to the first man who pursed his lips and shrugged his shoulders dismissively. More brief words were exchanged when an older man and two glamorous looking women joined the group, and all the spectators laughed. The first man shook his head and smiled, walking away to continue his day. One of the women took a photograph of Sarah on her phone as the group of onlookers began to grow.

Sarah pleaded silently with all of them to help her, but nobody could be sure what this was and from behind her sunglasses she couldn’t even communicate with her eyes. Was this some lifelike advertising display? A promotion for how sexy gym equipment could be? The crowd seemed eventually to be happy in the belief that this was a real person in the window, but why? Who knew?

Sarah’s arms were burning intensely now, and she felt her strength draining. Slowly, shakily, the weights were pulling them to the side. Her legs, thankfully stronger, were faring slightly better but there surely wasn’t much time before she could no longer hold this position. At the same time as Sarah saw her forearms parting in front of her face she felt intense ripples of pleasure building inside her core. She felt goosebumps form on her thighs and back and the skin of her nipples drew into hard, tight points. She couldn’t move her hips much at all, but in spite of herself Sarah started to rock against the vibrator. Although she dreaded the idea of having an orgasm in front of this little audience she felt the need to chase the relief and release which felt so close now.

Sarah’s arms continued to open, and she snorted hard through her nose as her legs began to shake. The wires on her white top pulled taught, lifting the fabric as her arms moved to the side. She saw her audience laugh, or gasp, covering their mouths and taking photos on their phones as the little top lifted to expose her round, firm breasts. She strained, trying to close her arms to cover her hard nipples, and with enormous effort and growling around her ball gag she started to make some progress. But then her mind clouded, her buttocks clenching and her thighs trembling as she realised that she was about to cum on the relentless vibrator. Her entire body felt the waves of ecstasy, made even more powerful by her inability to move and the complete lack of control she had over this situation and Sarah screamed into her gag with the intensity of her orgasm.