Friday evening came and over dinner, my father, the 60-year-old High Court judge outlined the rules for his "court" hearing and his decision over whether my sister, Janet, or I had won the punishment competition involving his wife, our stepmother Amanda, 35.
"First, dress rules," said my father, a tall, distinguished grey-haired man. "Since it's an informal court I think everyone should be clad in erotic clothing of some kind - I leave it to you Janet and Jason to decide how you are dressed, I will choose an outfit for my dear Amanda."
And he beamed at his wife, as he sipped on the last glass of a vintage Chateau Margaux. "Thank-you, darling," said Mandy, in a quiet voice, as if she already knew what he had chosen.
"As for procedure," father continued, "you may go first Jason with a brief statement as to why you consider you performance worthy of my verdict, you, Janet will follow."
We both nodded. I had a trick up my sleeve, but I wasn't going to alert Janet to it, just yet.
"Then we will call on your stepmother to give her testimony as an expert witness, and I will then deliver my verdict after considering all the evidence. Any questions?"
We had none. Father drained the glass of fine French red and smiled: "Good, convene in the court in my study in 20 minutes."
In my bedroom I chose a pair of black PVC briefs - well, the back fully covered my buttocks, but the front had a sort of mesh panel which was see-through, and my eight-inch cock was at semi-erection. Then there was a tap on my bedroom door, and in walked my sister.
Janet was wearing a superb black PVC bikini, which held her lush 36-inchers into full uplift. The gleaming black effect of the material was heightened by a red lipsticked mouth motif which was on the centre of the bra cups and on the mound region of the panties.
"You look good enough to eat, Jan," I told her.
She laughed and said "Later, darling brother, later" before giving me an open-mouthed kiss and whispering: "Good luck, Jase - you'll need it. I'm the odds-on favourite!"
"I know, but favourites get beaten," I replied. "Shall we go?"
We then entered father's study to find three chairs had been placed in the centre of the room, facing his desk. Seated in the middle chair was our stepmother. As she turned to smile at us, I saw that she was wearing the cruel leather bondage bra and punishment panties that Janet had made her wear during her first punishment session with stepmother.
"Hi," said Mandy, brightly, as I took the chair on her left, Janet the remaining one. "His honour will be coming soon," said Mandy. "Oh, I mean entering - oh, that sounds risque, too. You know what I mean."
Then behind us we heard a cough before my father announced: "All stand for his honour, Judge John."
In swept my father, wearing a long black judge's robes and a black PVC thong, which did nothing to hide the fact that his eight-inch cock was in an obvious state of arousal.
He sat behind his desk, put a pen on his legal notepad and smiled: "Nice outfits, Jason and Janet, and especially nice for you, my dear."
Mandy smiled at him and replied: "Thank you, your honour."
"Right," said father, making himself comfortable for the "hearing", "we'll start with you, lad. Make your opening submission."
I stood, cleared my throat and spoke in what I hoped was legalese: "Thank you, your honour, but before we begin I wish to make an application to disqualify my learned friend, Janet, from the competition."
"What are your grounds," snapped the judge.
"Over-spending the 100 pounds limit which you placed on our expenditure at Miss Hardcastle's sex shop," I answered.
"Er, um, yes, I will consider your application, but not immediately," said the judge. "First make your opening statement, then I'll hear from your learned friend, then I'll hear your application."
Fuck! This would give Janet time to prepare a defence. I shrugged and went on: "May it please the court, I respectfully submit that my punishment session with the witness, Mandy, was far more erotic and stimulating than my learned friend's.
"The way the cords strained on the witness Mandy's nipples and pussy lips was extremely erotic, the use of the flogger to make her adopt various positions was domination at its finest, and the forced fellatio was humiliation of the top order.
"In fact, it was a pity there is not a video record of the punishment I inflicted on the witness. Next time I play that game with her, I suggest that it be recorded on videotape."
As I sat down, my father nodded: "Excellent idea, young lad, excellent idea. I've made a note and I will issue a directive to that effect.
"Now, Janet, state your case, girl."
Janet stood and beamed one of her "Let me suck your cock" smiles. "Thank you, your honour. My submission is brief and to the point, since I have no wish to detain the court any longer than absolutely necessary."
And with that the ingratiating little bitch gave me a sidelong glance as if to say "Object about over-spending as much as you like!"
"The court is indebted to you," said my father pompously, bowing his head in that judicial deference those on the bench award to barristers and QCs who have just outrageously sucked up to them.
"May it please the court," Janet began, "I think my punishment for the witness Mandy began on a high note and continued that way. To ride her in was a perfect demonstration of my dominance over her.
"The fact that she had to carry a bag containing her garments of punishment and the garment which I would wear to add to her punishment was, to my mind a master - or should I say mistress? - stroke.
"The punishment bra and briefs, plus the fact that she was ordered to fondle herself while wearing them was a piquant touch.
"But the piss panties and the enforced ingestion of my urine was, in my humble submission, female domination supreme! That, your honour, is my submission."
Father smiled: "And an excellent submission, in the opinion of the court."
He sounded charming when speaking to my sister, but when he addressed me, the old sod was all business again: "And now, sir, make your application to have your sister disqualified. And your arguments had better be good!"
I stood and again cleared my throat: "May it please the court, the spending limit imposed on us by the court was 100 pounds."
"We all know that, get on with it," snapped my father.
"I checked with Miss Hardcastle's sex shop after I witnessed Janet's performance on Thursday night. The punishment bra and panties looked extremely expensive to me. They were, in fact, 85 pounds. The piss panties were 25 pounds. The price of the riding crop which Janet used on the witness, Mandy, therefore becomes irrelevant - at 110 pounds, my learned friend has clearly exceeded the financial limit and, as such, should be disqualified. I rest my case."