"Don't worry, you two. You will be very well punished before I finish with you. But I think maybe I'll let one of you watch while I work on the other. Let's see. I think I'll start with Kristie." I removed the dildo and unfastened Katie's cuffs from the rope, leaving Kristie with her hands still raised. Then I moved Katie over to one of the barn support posts. I clipped her cuffs together behind her back, separated by a couple of inches of chain. Then I moved her against the support with her back to the post so she would be able to watch her sister's torment. I took a three foot long round rod and inserted it behind the back of the post and inside her elbows. This strained her arms backwards and pushed her chest out, as the wood rod held her arms bent and left her almost no freedom to move around the post at all. It also let the post press against the plug still embedded in her ass. I added a pair of chained nipple clamps, but left her feet free so she could squirm around a little.
Next I brought over one of the saw horses and placed it next to Kristie. After placing a folded blanket across the horse, I released Kristie from the pulley rope and moved her so she was facing the saw horse from the side. She could tell what was coming and didn't object when I spread her feet and anchored her ankles to the ends of the horse. I added the second pair of nipple clamps to her hard nubs, bringing only a sharp intake of breath. Now that her lovely breasts once again matched her sister's, I bent her forward across the padded rail of the horse and tied her wrist cuffs to the ends on the opposite side, leaving her bent nearly double, her ass raised high and stretched invitingly.
For a couple of minutes I ran my hands over her body, tugging gently at the chained clamps and teasing her soaking pussy. Then I picked up the cat once more and began to drag it across her bare skin. Suddenly I raised it and quickly slashed it downwards across her already sore rear. She squealed, but instead of continuing the flogging, I put the cat down and picked up one of the frat paddles with the pattern of drilled holes. Standing behind her and slightly to the side I brought this down hard across her red ass. One of the things I had learned from my previous BDSM experience is how to use a paddle. Anyone can use it like a club and beat another person, but this doesn't necessarily produce the most pain and can result in some real damage. The secret is to swing the paddle and rotate the wrist just before contact. This method produces a higher contact velocity and results in a sharper sting without having to strike hard enough to bruise. The holes in the paddle remove the cushion of air trapped by a solid paddle and also mean a greater area of edge contact, which produces a greater pain. Another thing which makes a paddle more effective is to have the victim with her toes turned inwards. This keeps the ass taut and makes it impossible to clench the buttocks. I had tied Kristie's ankles in this position so she couldn't turn her toes straight.
Evidently my technique worked, for I was rewarded with a loud scream from my bound victim. I waited a couple of seconds to make sure I hadn't gone too far with her, but she quickly controlled herself and even wiggled her ass in open invitation of more. I didn't disappoint her. Altogether I delivered fifteen strokes with the "Swiss Cheese" paddle and another ten with the leather one. Kristie was crying and her bottom was now a bright red, but she continued to wiggle it at me.
When I finally stopped the spanking I moved up to her and began to tease her bound body, tugging at the chain on the nipple clips, running my fingers over her tits and up her sopping slit, penetrating her hot tunnel. After several minutes of this I moved behind her and suddenly pushed my rigid cock into her clenching pussy. I shoved all the way in to the hilt in one single movement and then held myself tightly against her while she struggled against her bonds and her internal muscles squeezed me in a constricting grip. I ran my hands across her bottom, feeling the heat from her red skin and then tapped sharply against the embedded plug. Kristie jerked against her restraints, straining for release. I grasped the flared end of the plastic intruder and began to twist and pull, slowly removing it from her clenching ring of muscle. As the invader pulled free, an anguished moan escaped her lips and another a second later as I pulled my member from her other opening. But then I pressed the head of my shaft against her already distended rear opening and pushed against her. Kristie seemed to relax her muscles almost at once and I began to sink into her nether tunnel. As I slid in full length, a sound somewhere between a whimper and a sigh passed her lips and then she was straining back against me, trying to sink my shaft even deeper.
For the next ten minutes I fucked her rear hole, sometimes slamming hard against her red and sore bottom and sometimes sliding ever so slowly in and out. Each time I sensed she was starting to near orgasm, I slowed or froze, lengthening the experience. I also stopped several times as I found myself rapidly approaching the point of no return. I wanted this to last as well as to torment my beautiful victim.
While I was doing this I became aware of Katie, tied tightly to the support post and watching us. She was struggling in an attempt to bring herself off and soon her voice, filled with frustration, began to taunt her sister. "Come on, Dave. Really pound her ass. Make her feel it. Spank her some more and pinch her tits."
However, instead of resenting this, Kristie seemed to become even more turned on at her twin's words. It also had a similar effect on me, and a couple of times I took her advice, squeezing Kristie's breasts and tugging on the clamps, as well as occasionally slapping her red bottom. Soon I couldn't wait any longer and began to pound into Kristie's firm behind hard and fast until I felt the pressure building to the point where I could do nothing but press myself in as deeply as possible and hold tightly to Kristie's hips as I jerked through a half dozen convulsions, pumping what seemed quarts of my juices into my lovely victim's bowels. Kristie answered my thrusts with her own muscles, holding me in a grip I would not have believed possible as her contractions began to rhythmically squeeze my surging shaft.
When the explosions came at last, we both collapsed, Kristie onto the padded horse and me onto her hot rear. For half a minute I lay with my weight on her hips and then I gradually stood, slowly pulling my softening member from the velvet grip of her rear passage. I moved away and used a wet cloth to clean myself before returning to release the exhausted girl from her restraints.
Katie was still squirming in frustration and now said, "What about me? Do I get the same punishment, too?"
I moved Kristie over by her sister and reached out a hand to tug at Katie's nipple clamps. "Would you really like a spanking like that?" I asked.
"Of course, Dave. Kristie liked it, didn't she? That means I will, too."
I couldn't begin to argue with logic like that and her words were already making my shaft begin to harden again. After the intense climax I had just experienced, I would have thought it would have taken quite a bit longer for me to recover, but Katie's words - and Kristie rubbing her clamped tits across my back as I turned towards her sister - had speeded the process considerably. Kristie's added words - "Go for it, Stud" - might have helped a little, also.
I removed the rod from Katie's elbows, releasing her from the post and started to turn her sister so her back was against it instead, when Katie said, "Her ass is empty, Dave. Shouldn't you do something about that?"
Her twin immediately added, "I do feel rather empty back there."
I grinned at her. "Grab you ankles, Wench, and turn you feet in." She quickly complied and I retrieved the plug, added some more lube to it, and firmly pushed it back to its previous resting place. Kristie sighed, stood up, and held her wrists together behind her so I could clip them to each other. I then moved her against the post and used the three foot rod inside her elbows to lock her to the support. I removed the nipple clamps from both girls to allow the blood flow to return. I knew this would make the clamps hurt even more when, a minute later, I replaced them, letting them close over the women's flattened nipples at right angles to their previous grip. This was confirmed when I got two cries from each twin as I did so.
Next I moved Katie over and bound her to the padded saw horse just as her sister had been a few minutes earlier. I then repeated the entire performance, teasing and then paddling Katie at least as much as I had Kristie. She cried and screamed, but seemed to get just as turned on as her twin had, struggling in frustration and actually asking for more. I ended up giving her an extra five swats with the leather paddle before stopping to tease her hot and bound form. By that time my cock was again rigid and when I plunged into Katie's hot pussy, I had nearly as much difficulty holding back from an immediate climax as I had had with her sister. And when I removed the plug and entered her rear passage, both of us seemed to be even more turned on. At last, when finally I had expended myself again, pumping several spurts "where the sun doesn't shine", we both nearly collapsed into unconsciousness.