On the Monday morning, my sister Janet announced she was going out all day, which left the way clear for my stepmother and I to rehearse the punishment game I had devised as part of my competition with Janet.
But just to make sure that Janet didn't sneak back and try to spy on our pre-punishment performance, I decided to hold the try-out in my bedroom, which is quite large. The entire punishment didn't take up very much room, anyway.
After the rehearsal - I'll leave the details of the game till later in this story - I sat on the bed with Amanda and we both chatted. I was naked and so was she - that was a requisite for the game I had devised.
"How was it?" I asked the lovely 35-year-old blonde, former pornstar.
Mandy paused, then replied: "It was very good. You could get a job writing scripts for a porno, even acting in one."
I laughed. "Seriously?"
"Yes," said my stepmother, "you're really very good."
Then she changed the subject: "And what has your darling sister got planned for me?"
"I'm not sure, but I do know it involves water sports," I informed her.
"Oh, good," she said. "Well, good for your father - water sports is one of his big interests. The movies I made involving piss always turn him on the most. We have super sex after he's watched one of those." Then she changed the subject again. "Enough talk, Jason. How about a fuck?"
Well, that was fine by me, so we spent the next couple of hours rolling around on my bed, until she left, leaving me limp-pricked, exhausted - but delighted.
The next day - a Tuesday - time dragged by until, after dinner, at which father consumed an entire bottle of excellent Bordeaux, he addressed Mandy and me: "Right you two, off to Jason's bedroom to get ready for your performance. Janet and I will be in my study. Knock on the door at 8pm precisely and we'll get started. Good luck!"
In the bedroom, I attached the nipple clamps to Mandy's lovely nipples, after sucking them into ripe red cherries. They were already attached to the metal bar I'd purchased with twine cords going from the bottom of the clamps to inserts at the extremities of the bar. Mandy held the bar at shoulder height, so the twine hung slack.
Next, I attached the other set of clamps to her labia lips, then she went into a squat, just like a wicketkeeper or, for our American friends, a baseball catcher, and I tied the ends of the cords to her big toes.
After picking up the flogger I'd purchased along with the clamps and the iron bar, we made our way to the door of father's study, me walking with my eight-inch inch cock proudly erect, stepmother waddling along, not unlike a duck.
At the door, she halted. I stepped beside her and knocked. Father's peremptory voice barked: "Yes?"
"Punishment party seeking permission to enter, father," I answered, employing the phrase he'd told me to use.
"Enter," came his pompous court-room voice.
I opened the door and allowed Mandy to waddle into the centre of the floor. At his desk my father sat, naked from the look of it, a legal pad in front of him, pen poised. Beside him, sat my sister Janet, her lovely 36-inch breasts pointing at me, nipples erect. Apart from shiny black, high heel shoes she was nude.
Stepping beside my stepmother's crouched position, I caressed her bare back with the double-tipped flogger. Then, with a sharp but not heavy "Craaaack" I brought it down across her shoulder blades.
This was the signal for Mandy to rise from her crouching position until she was standing fully erect. The movement, of course, tautened the cords from her toes to the clamps on her piss flaps. Her face grimaced as the pain hit.
Next, I flicked the flogger sharply across her lush bum. At this blow, she lowered the metal bar until her arms hung straight down by her sides. This movement dragged the cords down from her nipple clamps, providing considerable strain on her lovely nipples.
Father made some rapid notes on his legal pad, and also appeared to be making some moves with his other hand beneath the desk. Janet, I saw, was already stroking her pussy.
The next move in my little punishment game with my stepmother was to whip the flogger against her buttocks, once more. This signalled her to slowly raise the bar from its lowest position to its highest, until her arms were outstretched above her head, the cords dragging her nipples and her breasts upward.
The next stroke, again on her beautiful bum, was one of the little refinements I was proudest of in her torture. As the blow thwacked against her creamy buttocks, Mandy raised herself to tiptoe, her calves and thighs straining at the effort. The movement, of course, also increased the tension in the cords attached to her labia lip clamps. She gave out a small sigh of agony as the pain coursed through her.
I then waited, letting the seconds tick by as father and my sister watched on intently. Then I cracked the flogger against Mandy's arse, which was a signal for her to sink down into the crouch once more, alleviating the pain from her pussy lips cords, but not her nipples, as she still held the bar high directly above her head.
At last I cracked the whip against her shoulder blades, the signal for her to lower the bar to shoulder level, thus reducing the awful agony on her nipples.
"Good girl, Mandy," I said, encouragingly, as I walked in front of her, placing my randy stiffy against her lips. As she took me into her mouth, I turned slightly sideways, giving our audience a profile view of the fact that she was fellating me.
The tension was broken by a sharp clap. My father was applauding us!
"Bravo, Jason, bravo," he said, clapping quietly in the stillness of his study, as his wife still sucked on my penis.
Then father turned to Janet, who was still rubbing her fingers through her pussy: "Sorry, darling daughter, but you have to admit this is a fine display of domination!"
Janet nodded and responded, begrudgingly, by the sound of it: "Yes, it's quite erotic, but is that it?"
I grinned. "Oh no, my dear sister," I gloated, "it most certainly is not. Ready for the next set of disciplines?"
Father nodded eagerly, his hand ferociously at work beneath his desk, I was certain. "Yes, boy, continue, continue," he said, ever the judge!
I then proceeded to use the flogger on Amanda's beautiful back and buttocks, first to bring her to a standing position, then to raise the bar high above her head, then to go up onto tiptoe.
My next stroke brought her down to a standing stance, but the one after that set her off in a prancing, high-stepping movement around the study. Her knees came up until her thighs were horizontal with the floor, causing considerable pain to her pussy lips, I was sure. In this way I high-stepped her around the study for several circuits before ordering her to a halt.
I then allowed my lovely stepmother to perform fellatio on me once more, before setting her off on another standing-in-place session. More fellatio, then I high stepped her around the study for several more circuits before bringing the proceedings to a halt.
