“And what do you think your up to?” I asked quietly.

“Shit!” Arron screamed jumping naked off the settee, sending his equally naked sister sprawling on the floor.

“I …I …I …” Arron stammered trying to cover his decreasing erection.

“Quiet” I snapped. “Before you try lying to me, I have been here for nearly ten minutes, watching your vain attempt to teach your sixteen year old sister to suck your cock correctly. Ellen. What do you have to say?”

Her head appeared over the back of the settee. “I was just curious daddy, I …I …” And then it all just flooded out.

She had asked Arron if he had ever been sucked off and what was it like as all the girls at school kept talking about it and she didn’t know anything, and how Arron had told her you needed to be naked and he would teach her what to do and…and…and…”

“I see so, your eighteen year old brother has committed incest with you. A crime for which he can go to prison.”

“Eh, no no we …I, no we didn’t fuck.” Arron gasped

“Any sexual contact is incest. So did he fuck you Ellen?”

“No daddy nobody has. I don’t mess around with boys they only want one thing.”

“Like your brother you mean.” Silence was the reply

“Ok well we need to sort this out then.” I said walking towards them. They both grabbed for their clothes, “Don’t bother. You mother is away for a week and you will stay naked all the time she is away unless we have callers or go out when you will dress as I say.”

“I thought you were going with her.” Arron said.

“I was but the car broke down so I put her on a train. I was only going overnight anyway.” As I was saying this I was removing my clothes.

As I approached them I saw their naked bodies for the first time since they were about 6 or 7. Arron had a large cock for his age, pretty much like me at that age. His body was covered in fine hairs and he was pretty muscular. As a bi man I found it quite a turn on even if he was my son. Ellen was a totally different kettle of fish though. For her age she was stunning. Still had a bit of puppy fat but that was so outweighed by her perfect tits, firm 36b at a guess perfectly rounded arse and those innocent eyes of hers. There was no way I was going to miss this opportunity.

“Daddy what are you doing?” Ellen asked, eyes wide.

“I am going to teach you both how to suck cock. And then we will move on to other forms of sex education.”

As I dropped my trousers they saw my semi erect shaved cock. “Shit dad,” Arron gasped, “I thought I was big.”

“Well that didn’t stop you trying to choke your sister with it. So now you can have a taste of the same.”

“What?” he gasped “You mean you want me too….Dad I’m not gay I’m not into guys.”

“You will be after a couple of days in prison. That’s your choice. And your lesson for taking advantage of your sister.”

“You wouldn’t.” He said, then after a moment looking at my eyes, “Yes I think you would.”

“You don’t have to be gay to enjoy sexual contact with a man.” I said, “I am not gay but I have had relationships with several men over the years. And yes your mother does know. We have had a varied sex life in our 20 years together.”

“Wow I thought mum was a bit, well, you know. Quiet.” Ellen said.

I smiled as I sat on the settee, “You sit here baby girl and let me play with those nipples of yours.” I couldn’t actually believe how relaxed I was. The fact that neither of them were putting up much objection just made it even easier.

“Right, now Arron is going to do exactly what I tell him and if he follows instructions he will suck cock like a pro. You baby girl listen and watch and then you can try it out on Arron”

“Oh daddy I wanted to do it to you.”

“Don’t you worry baby girl, once you get it right with Arron, then you can do it to me and show me what you have learnt. If you both learn everything I can show you this week, maybe we will get mum to join us as well.”

“Oh wow dad I have had the hots for mum for ever.” Arron said taking my cock gingerly into his hand.

“Before we start there is one golden rule that goes throughout your life.” I said looking at them in turn. “If either of you, or any partner you engage with ever say’s no. Then they mean NO. Ok?”

Ok dad.“ Arron said, as he tentatively lowered his head onto my erection, my hands roamed over Ellen’s body exploring the soft flesh. Her breasts were firm and her hips, though a little soft, spoke of strength.

I guided Arron in the art of sucking cock. Slowly pushing him as far down as he could go before choking, then releasing him before guiding him back down till eventually he had my whole 9” in his mouth. He was a quick learner.

The whole scenario had turned me on so it wasn’t long before I felt my balls churning. “Ok baby girl.” Do you think you can that to your brother?”

“Oh I think so daddy.” She said eagerly.

“Ok well you sit here.” I said tapping the settee next to me. “Arron get on the settee and stand astride her so she can suck your nice huge cock. Don’t come till I say so. Just let me know when.“ I added, as I stood up.

They both did as instructed. I watched as Ellen gingerly took her brothers huge cock into her mouth. I gave her a little guidance, but she seemed like a born cocksucker. I encouraged her to breath through her nose and around the blockage in her throat. Telling Arron to take it slowly but to push it all the way down her throat.

Then I got between her legs pushing them wide so I could see into that wet virgin hole. My intention had been to take this slowly. But the sight of my young daughters cunt being open to me, while she avidly sucked her brothers cock was just too much. I pushed my face into that sacred place and raped her with my tongue. The sudden contact made her raise her hips to me as she let out a huge, but muffled, moan of pleasure Her clit was quite large and easy to wrap my lips round as I sucked on it hard. She was trying to scream suck and thrust all at the same time. I pulled her legs up and told Arron to hold on to them. Now I had access to her cunt and her puckered rose bud. Her pussy juice had lubricate that hole enough for to slip a single finger in while I pushed two into her now throbbing cunt.

“I’m going to come.” Arron said.

“Me to, oh yes daddy your making me come to.” Ellen gasped.

“Ok Arron move back.” I said, “Ellen face Arron and put that hot pussy over daddy’s hot cock. You going to get deflowered.”

Ellen mounted me reverse cowgirl and hovered over my cock. I slowly lowered her down till I felt her hymen. “Do it daddy.” Ellen sighed, “I know what happens I want to do it.” She had her hands on my legs and as I pushed her down she dug her nails in, gasping. Then as her hands relaxed I she lowered herself till she had taken all of my cock in to that heavenly hole.

“God you feel so good baby girl.” I said, “Arron put it back in her mouth. Ellen, when he comes you swallow it all ok?”

“Oh yes daddy.” She sounded like she was in heaven. I know I was and as Arron smiled at me I knew he was as well. So we fucked. I lifted her arse slightly and rammed into her soaking cunt like a rampant dog while my son, her brother fucked her face like they had been doing it for years.

“Her it come sis.” Arron said. She had one hand on his cock and used that along with her lips to finish him off. “Oh fuck sis you the, ooohhhh jeezz the best ever.” His legs shook and the smile on his face was ear to ear. Arron filling her face started Ellen off on her orgasm and she started pounding up and down on me harder and harder.

I literally just lay back and let my daughter fuck herself on my cock. I held my orgasm off until she screamed out her orgasm and then I could hold off any longer. She was pounding me so fast she nearly fell off but her brother held her up and then as she slowed down he kissed her. My orgasm was so powerful I thought I had blown the end of my cock off. Jet after jet of come spurted into my daughters virgin hole. Finally Ellen came to a stop. To my surprise I was still semi hard. Arron of course being that much younger was rampant hard, and looking at me for instruction.

“Arron lay on the floor.” I said. He instantly did as he was told. “Ellen get your brothers hot cock into that wet pussy of yours.

“Ooo I got you now you now Arron.” She said smiling.

“You can have me anytime you want sis.” He replied holding his arms out to her, smiling.

“Now, take your time.” I said, “Sex should be fun and is to be enjoyed by all parties. If you please your woman Arron she will always try to please you. Same for you Ellen. Learn what it is your man or woman likes as we all like different things.

I had been playing with my cock as I spoke but now I had another virgin hole to take. I moved behind Ellen and slid a finger into her dripping pussy, brushing Arron’s cock as I did. Then I slid that wet finger into her butt hole. Followed by my tongue then another finger. Once I had three fingers moving freely in that place I moved in close behind her. “This will hurt for a moment. Let me know when it has passed.”

“Yes daddy.” Ellen said, her voice plainly a little apprehensive.

I put my cock at her entrance and gently pushed. I needed to hold my cock in place to stop it sliding away but then it popped in that dirty hole.” “Oh daddy that hurts.” Ellen moaned, “Wait, wait.”

“Ok baby girl.” I whispered. I stayed still till she pushed back on me slightly. Then I slowly started to push in and out. She gasped a few times but finally I was balls deep in her arse. “How does that feel.”

“Oh daddy that feels awesome.” Ellen said, “I feel, totally up like I had a huge dinner.”

“I can feel you rubbing against my cock.” Arron said, “The feeling is so hot.”

“Well son now that we have spit roast your sister lets make it worth her while shall we?”

“You bet dad.” He said eagerly, “Are you ready for the ride of a lifetime sis?”

“Oh yes it feels so wonderful.” Ellen gasped.

As I started pumping into my baby girl I reached round and groped her tits. Arron was already playing with her nipples and Ellen was just lost in a sea of moans and groans as Arran pumped up and I pumped back. She floated between the two of us, supporting herself by leaning on Arron’s shoulders.

It didn’t take long for her to reach her orgasm but the fact that she was coming from her arse as well surprised her. “Oh daddy daddy,” She cried, “What’s happening? My bum is….my pussy…..Ooohhhhh daddyyyyyyyyyyy.” She screamed, loud, long, and ecstatically in her double orgasm. Her whole body froze and then as Arron and I both shot our loads into her she shuddered and started shaking. Then she was pounding up and down searching for more, her breathing ragged, not wanting this glorious moment to come to an end. Finally, finally she slowed down and collapsed on top of her brother. Arron’s face showed serious concern.

“Don’t worry,” I panted, “She has just….had the….experience of a lifetime.” As my soft cock dropped out of her arse I flopped down on the floor beside them.

Ellen reached an arm across and brushed my face. “Thank you daddy.” She said softly.

“Blown away dad.” Arron said, “Really. Blown away.” He rolled off his sister and we all lay there recovering.

We lay there in silence for about five minutes then Ellen laughed, “If I’m going to have a whole week of this. I’m glad mum put me on the bloody pill.”

“Yes that could have been a problem.” I said., “Arron make me a coffee. Lots of sugar I need some energy. We have all night and all week to fuck ourselves silly. If of course you two want to.” I smiled.

A cacophony of oh yes and you bets ensued. “Can I have a quick shower?” Ellen asked as Arron went to the kitchen.

“Of course baby girl. But keep that spunk in your cunt because Arron is going to learn how to eat pussy.” I said, smiling at her.

Ellen came down just as I finished my coffee. Arron and I had silently while I drank it, just occasionally smiling and smirking at each other, As she walked into the lounge naked I said, “Ok. Up to my bed. It’s time Arron had his lessons in the art of pleasure.”

“Oh goody goody.” Ellen said running up the stairs.

Arron looked a little apprehensive. “Did you think I had forgotten about that cute arse of your s son? “ I asked, as I ran my hand over his buttocks.

“I knew you hadn’t.” he said, “I’m just a bit, well, it’s all new to me and I don’t now if I will like it.”

“The no rule applies to everyone son.” Including me. I hoped he wouldn’t say no. But we would see.

Once in the bedroom I instructed Ellen to lay on the bed with her head at the bottom. Then I instructed them in the art of the sixty nine position. Having already deep throated her brother Ellen had no problems. On the other hand it was obvious that Arron had never eaten pussy. I guided him as best I could. “Listen to her breathing and watch for any jerks she may give. She will let you know when you have it right.” I said.

Once they had it working properly I went to my bedside cabinet and took out a vibrator and some lube. To begin with I licked Arron’s bum crack, then I licked it and pushed my tongue inside followed by a lubed up finger. He was a bit tight as expected, but he soon loosened up and I could hear soft moans coming from his pussy filled mouth. Once he was comfortable with two fingers I used the vibrator. It wasn’t a large one but it would open him up enough for a first penetration with my cock which was now fully hard.

I slid that vibe in and out till it moved with ease and Arron’s moans got louder and louder, the mechanical cock doing its job. Then I put my cock at the entrance and pushed slightly, giving Arron the chance to say no. To my joy he pushed back at me and my cock head deflowered another virgin arse. I waited till he pushed back and then, like his sister before I pushed in as far as I could go.

I could see Arron’s head bobbing up and down on his sisters pussy and feel Ellen sucking on her brother. Ellen then took my balls and played with them as I fucked her brother. I have no idea who came first. My head was just totally lost in what I was doing and the orgasm that ripped through my cock and into my sons arsehole. I didn’t even need to fuck him for that final part as he was fucking Ellen’s face so hard he fucked his own arse with my cock.

My knees just gave way and I collapsed on the floor. As Arron fell off of his sister I managed to crawl onto the bed and that was all I remember. As I drifted off to sleep I knew I had a glorious week ahead of me. Full of fantasies realised and pleasure given and received.