not quite a Judas Cradle exactly, but definitely an Uncomfortable Seat - I call it " The Devil's Perch"
(drawn by me, ink on paper, lol - expand to view, otherwise it's grainy)
Story:
The lecherous jailer had always threatened to make things worse for her if she didn't co-operate; but instead of allowing him to kiss her, she had turned her head away; when he persisted, she spat on him.
Furiously, the jailer dragged her down to a squalid, damp dungeon, riddled with vermin, and locked her neck and wrists into a steel yoke; then he pushed her over to where the device he called the "Devil's Perch" waited, fixed to the wall. As he chained the prisoner's neck to the wall above it, she caught her first glimpse of the thing.
It consisted of a steel bracket attached to the wall, adorned with sharp spikes along the upper side, and fitted with two obscenely phallic protrusions, obviously designed to penetrate her vagina and anus if she should sink on to it. It was indeed a sort of perch or seat - but the most uncomfortable and devilish seat ever invented!
Briskly the Jailer kicked her ankles apart on either side of the perch, and chained them to the wall. But even then, he was not finished. He attached a thin chain to one of her nipple-rings (he had pierced her nipples himself, a couple of weeks earlier), passed the chain through a ring at the top of the perch and pulled it up again to attach the free end to her other nipple. The chain was too short, and pulled her tits downwards; to relieve the pull on her nipples, the prisoner bent her knees slightly... until the tip of the dildo suddenly touched her pussy lips, and she stopped, her legs slightly bent. Oh shit, she thought, looking down, this is not good.
The jailer seized her hair in one fist and yanked her head back , forcing her to look up at him. "Now you see what you're in for, don't you, you little bitch," he said, grabbing her chin with his other hand and kissing her violently; this time she was unable to turn away, or move or do anything, while his tongue forced its way past her lips and into her mouth, probing for the back of her throat. She felt sick.
Suddenly, the assault ended, and she was able to breathe again as the jailer stood back, took aim and slapped her once, quite hard across the cheek, so that she bashed the back of her head against the wall behind her. "That's what I call a kiss. Why didn't you let me do that earlier, and you could have avoided the Perch!"
Her legs were already trembling with the strain of standing with knees slightly bent; she pushed herself up and whimpered as her nipples were cruelly stretched again; nevertheless she forced herself up until her legs were straight, though the pain in her breasts was considerable. The jailer grinned at her. "Hurts, does it? Well, wait till you can't stand up any more, and you sink down on to the perch... you will, eventually... then you'll know what pain feels like! Have a good night on your perch, little bird! There are plenty of bugs and spiders in here; if you get hungry, just open your mouth, I'm sure a few will crawl in!"
He swaggered out, laughing, and slammed the heavy cell door behind him, plunging the prisoner into almost total darkness.