Felina and Louise were pressed against each other face to face but inverted. Their abundant sweat was mixing and dribbling down their tense bodies. Felina was jerking on the chain holding her hands in the middle of her back, trying to get some slack. Her body was contorting and twisting as her muscles bulged under her oily skin. She had soon to admit that the chain knot that was holding her wrists were scout-safe and there would be no chance for her to cut the steel with her special nails. She grunted in frustration.

Felina's head was pressed between her partner's thighs, a few centimetres under her crotch. On top of the strong, fishy and musky odour and heat, this offered her an impregnable view on Louise's vulva and butt. There, lodged a the cleavage of the butt crack, was the knot that was holding the whole loop of chain together. It was so tantalising to see it so close but out of reach...

Out of reach? Wait! Not quite. It could be touched by the long, steel dildo that was extending from her penis-gag. Felina pushed the tip of the shiny, studded rod against the chain knot, trying to pry it among the tightly packed links. Nothing budged. Felina knew this kind of chain knots. She had spent hours training to undo them. She knew that if they were tight enough they were virtually inescapable. Unless they could be lubricated, in which case the links slipped almost effortlessly and the knot untied "almost" by itself. Unfortunately, this knot was desperately dry.

Felina was rummaging these sombre thoughts when something dripped on her face. A long thread of dubious origin was dribbling from Louis'e vulva. With incredulity, she looked with more attention at this area, which she had attempted to ignore until then, and she noticed that the woman's labia were engorged and glistening. They embracing the chain that was parting them, pressing against the entrance to her vagina, before continue to her own neck. A sparkle of hope lightened in her sore mind. Tentatively, she rubbed the tip of her mouth-mounted dildo against the puffy pieces of flesh, coating it with the feminine juices.

Once she had gathered every drop of it, she turned it back to the chain knot, trying to spread it over the links. Alas, it did not good. There was too little of it, and most remained sticking to the steel dildo. She would need much more of it if the operation was to be successful. It did not take long to Felina to imagine where she could get more of the same stuff. The only question was whether she could push her dildo past the chain that was sealing it...

Turning again to Louise's crotch, she began to push the tip of her dildo on one side of the chain, her eyes crossed on the job, sweat dripping into her eyes and burning them. She found that the chain was not so tight and she managed to push the dildo head past the chain and against the entrance to the vagina. She felt a little sorry about what she was going to do. The dildo was long and thick, with many steel studs prickling along its shaft. It would no doubt be very painful to the poor Louise. But Felina had no much choice. It was this or wait and get more pain from the next spectators.

Encouraged by these reflections, she took a deep breath and pushed with all the strength in her neck. To her surprise, the dildo entered relatively easily until it was entirely within Louise's sex, with Felina's nose pressed against her sweat-soaked perineum, her face engulfed between the woman's warm thighs. The stench was hardly bearable. It was deeply disgusting to Felina who had never fantasised about going with another woman. To turn her head away from the disgust, she tried to evaluate how she was doing. No doubt, Louise's vagina was well lubricated. She imagined the juices enveloping the dildo, getting around the studs. Hopefully, there would be enough of the disgusting stuff to coat the chain knot generously enough to make it slip free.