I came back, and they were talking about me again, because they both looked at me with quiet grins on their faces when I returned. This could not be good. Either Miss Gonzales was telling Dhyanna some sordid bedtime secret, such as the time that I washed then licked her feet while humming the fanfare at the end of Star Wars, or Dhyanna was telling Miss G a childhood fact, like I used to wet myself on purpose when she was a baby, while humming the fanfare from Star Wars, just to get some attention. It really was a toss-up as to which would be worse.

"So, Shirl-sorry, Ted," began Dhyanna. "You and Marie, eh? I couldn't believe it! You, looking the way you do, no offence, and she looking like the way she does. Yummy gumdrops to her. How does that work? She's about three leagues ahead of you, mate."

She always had a way of making me feel good about myself, but this time I had to agree with her, and I told her flatly that I felt like the luckiest caretaker in the county. I smiled at Miss Gonzales, and with a small smile and a nod of my head to say 'come here', she skipped to my side and wrapped her arms around my chest. She let her head drift so her ear found my heart, then clasped her hands together in a way that made me feel both secure and in control.

"I'm going to need more proof than that," said Dhyanna, after awww-ing for a brief moment at the tender scene. She went on to suggest that I had hired Miss G as a high-paid escort, just to look good, and mused at length at the hourly rates that Miss G would have to charge to be seen with a perverted chap like me. Miss G blushed, and buried her head deeper into my chest, nibbling at me a little. I looked down at her, felt a particularly sharp mini-bite, then knew what my reply had to be.

"You want proof? What can I do to prove that? You want me to screw her right here on the desk? YOW, please don't bite me that hard, my dear!"

"Yes, yes I do," said Dhyanna Banana. "I dare you."

Ooo my. Those were the three words that convinced me to go through with it. I now wanted to give my sister the most blatant and explosive sex show that I could manage. There were just two problems with becoming erect in front of a mischievous sister of mine, but fortunately both were solvable. "I will, but on two conditions. Firstly, I don't want to risk seeing or hearing you while I'm doing this, so I will put on a blindfold and you will wear a gag. Secondly, I know you, Dhyanna, and I know that you would run up to me and tweak my ear at a crucial moment. Swine. So I want you to be handcuffed to the radiator. When those two conditions are met, Miss Gonzales and I will perform for you."

You will note that Miss Gonzales had no say in the matter - this was because she trusted me, she trusted Dhyanna, and she was nibbling at my nipple so tenderly - planting a wet kiss on my chest when I suggested the blindfold - that if I had said "no" to the dare, she would probably have bitten me in half. She was still clinging to me, which I took as a sign that she wanted me to do this, and she loved me being in control and making this decision for her. She had been embarrassed in front of the schoolgirls before, which was occasionally pleasant enough, but this was different for her, I felt. It was almost as though she wanted to prove to Dhyanna how much she loved me, and that I was not three leagues below her after all.

As for me, I knew that when I was wearing the blindfold, and when passion overtook me, I suspected that I would be able to block out the mental image of Dhyanna in the corner. Despite the fact that I would be naked, I knew that Dhyanna would be the one who would be more uncomfortable and embarrassed.

So that is why, after confirming my demands, and noticing that she hesitated for a second, I told her: "I double-dare you."

Dhyanna did something that, had anyone other than my sister done it, I would have drooled and purred. She brought herself to her feet, strode confidently to the radiator, and knelt next to it, delicately placing her hands next to a pipe.

"Very well, I said. Miss Gonzales, are you ready? Good. I want you to rush off, and fetch me your yoke, some ankle straps and chains. I don't want you to be tempted to rush off and unlock Dhyanna, so I'll be chaining your ankles to the desk. We'll also need the blindfold, handcuffs and the ballgag, of course. Don't tempt me by bringing back a riding crop or a flogger - I've never hit you blind, and I don't want to start now. Take off your panties and your bra, but keep everything else on. Mmm. I do like that light blue outfit you're wearing, the way it's tight around the bottom yet still makes your waist look slim and your legs look sooo... Don't stare at me like that, hon, I'm going to be blind in a few minutes, I want to remember what you look like. Now. What are you going to fetch?"

Miss Gonzales rattled off the list by counting on her fingers. "Yoke, ankle straps, blindfold, chains, ballgag and handcuffs. No bra, panties or things you can hit me with."

"Good girl," I said. She dashed off to her office, with a broad smile on her face.

"She's a keeper," said Dhyanna, still kneeling, but hardly submissive. "She's quite devoted to you, you know?"

"Really. She's gleefully going to get a yoke, and put herself through the embarrassment of having my sweaty arse wriggling on top of her in front of you. What made you think she was quite devoted to me? And yes, I am feeling smug."

End of part 1… Part 2 will follow “soon”, in which the smutty stuff starts again. Hehe.