I borrowed the rag to wipe down and threw on my robe. Beth had her robe on as she led me to the kitchen.

"I have a charcuterie already made. Be a dear and open up that Italian wine we have been saving for a special occasion."

"Anything for you, my love, but I'm wondering, when are we going to talk about what just happened in there?"

We took to our duties as we debriefed.

"You said you would share the rules at some point, so what are they?"

"Let's wait until we are all together so Milly can hear them again."

Sensing something about my lack of response, as she has always been very intuitive.

"Is there something you want to discuss while our niece is in the shower?"

"Yeah, you made it seem like Aunt Cathy played a minor role other than watching," I said while making air quotes around the watching part.

Chuckling, Beth responded, "Yeah, my FOMO gets the best of me. I could never stay as far removed as she did. I think she was embarrassed and secretly wanted to be more involved, and if I'm being honest, I think I secretly wished she could have been more loving in those moments."

"Loving, as in, making out with you?"

"Oh, you liked that, did you?" she asked, sliding me a sly smile. I smiled back, waiting for the response she was forming.

"When I let Milly know we were a go, I think she assumed I was part of the deal. Also, I think she had yet to have a great encounter with a strong male like yourself, so she is connecting better with females."

"I could see that, I guess. Now you know I'm not pushing this agenda at all, and at the same time, you know that your involvement is super hot."

"I know, right? And I have to let you know that watching you fuck that little girl and that mouth she has on her is so kissable. I think I came a little there at the end."

She seemed to pause to reflect, so I asked, "Where did you go?"

"Just reliving something, I guess. Some from today and some from my past. I am so happy we are at this place right now I don't want to screw it up."

"She has a good head on her shoulders and I think between your experience and my magic cock it will all work out."

That brought a laugh that we both needed.

"Speaking of that magic cock, I may have to call dibs on it soon. I was going to ask you to join me in the shower, but your next load needs to go in her pretty little mouth, and I don't think I can stand the temptation, so you will have to wait."

"Well, it sounds like the water has shut off, so Milly should be in here soon."

I poured the wine and nibbled on some food until Milly arrived, freshly cleaned and still in her robe. Beth kissed her on the cheek and headed into the shower while saying over her shoulder, "No fucking without me you two."

"Oh, come on, Aunt Beth, I think I'm ready again."

"We've got all night, cool your jets."

Milly laughed and started eating while looking at me with those big brown eyes.

"Penny for your thoughts", I asked.

"I wasn't kidding in there when I said nobody has fucked me like you did."

"I'm glad you liked it. You know it was pretty special for me, too."

"I could see that. Ok, while Aunt Beth is in the shower, we need to talk."

"What's on your mind?"

"Aunt Beth filled me in completely on her arraignment with Uncle Bill, and I love how this is going. She even said there will be times that you can come visit and rent a place next to campus where it's just us. And I hope you know, I want to do everything with you."

After pausing for effect, "I think I have always had the hots for Aunt Beth, and I think I can bag her before the night is over."

"Bag her, " I said, sounding a little angry, "She is not some trophy for you to conquer. She's my wife."

"Sorry, bad choice of words. Let me try this a different way. When she said this is not a threesome, did I detect some disappointment?"

"Not exactly, I knew the rules of engagement going into this based on what she said about Aunt Cathy."

"Me too. But still, don't guys find the idea of their wife with a unicorn kinda hot?"

"Wow, young lady, using swinger lingo tells me you may have more experience than we thought."

"Not really, it's internet research. Either way, if you want me to lay off, this can stay between us. But if you want to help move her in that direction, I think she's close."

"What makes you say that?"

"That make out sesh while you were fucking me was real. I could feel the heat between us."

"Maybe, but also she is super horny right now watching all of this so it could be that."

"Ok, all I'm saying is if you're down, just play along."

'I would be dumb to say no to that. By the way, this red wine always helps loosen her up more than the champagne, so help me push her in that direction."

It was time for my shower, and the girls were super chatty when I returned.

The bottle was half gone, and Milly gave me a wink.

"Welcome back, Robert. I promised the details or ground rules as it were, so let's get that out of the way."

I could tell Beth was feeling the effects of the wine and the sexual vibe in the room.

"First off, Milly, this man belongs to me. I have first rights to him. I will loan him out for instruction and your pleasure as I see fit. There will be times that I want to be in proximity, and there are times I will send you two off alone. This secret must not be shared with anyone in the family. If you two get reckless and suspicions are raised, this arraignment ends."

"Yes, ma'am," we both said in unison and then laughed.

"Good, now about consent, we covered physical consent earlier, but we need to discuss consent around rules of communication."

"What kind of communication?" asked Milly.

"Dirty talk specifically. Your Uncle and I love it, and I enjoyed it with Uncle Bill. It can add to the experience for sure. However, I don't want to get too degrading, so just like the four words, faster, slower, harder, and softer. If you hear something offensive, ask to hear that in a softer way. If you want us to amp it up, simply say,' Tell me more and we will."

"Got it, Aunt Beth. Can we practice a little now so you can know what is turning me on just thinking about it?"

"Sure, what's on your mind?"

"Well, when you and Uncle Robert were talking about how I tasted like you, that was hot."

"So you like being compared to me?"

"I want to be owned by you two. I want to be your slut."

Beth locked eyes with me, measuring my reaction.

"Ok little miss, You want to be our slut, do you? So you want to be dominated but not degraded?" I asked.

"I'm not sure what you call it, but I want to be used by you. I want Uncle Robert to use me as his fuck toy however and whenever you will let him". I want to make you both so hot that you want to fuck me all the time. Just tell me what you need, and I will do it for you both."

I could see that Beth was becoming very flushed.

"I can tell you one thing for sure. I am the only person in this group who hasn't had a decent orgasm, and that needs to change. I am going to show you what it looks like to get fucked by this man. You will watch and learn. When he is giving it to you hard, don't just brace yourself and take it. You fuck him back. So, are you ready for your next lesson?"

"I am Aunt Beth."

"Robert, grab the wine and meet us in the bedroom."

I did as I was told. When I approached the bed, Beth was holding her empty wine glass in my direction, waiting for a refill. Her other hand was making slow strokes around her pussy to finish warming up. Milly was on her knees on the bed like she was instructed to do something.

"I'm going to have our little slut here suck your cock to get you nice and hard for me. After you have fucked my tits off, she's going to swallow your load when you cum. She will take every load you can produce in one of her holes tonight. She is your cum dumpster for the evening."

Milly threw a look and my wife and said, "I like what you said there, keep that up if you please."

"There is more where that came from, you will see. Right now I need less talking and more sucking from you. I expect him to be super hard and the sooner the better."

Milly smiled and looked up at me while consuming my cock. I shifted slightly to give Beth a better view while Milly and I could better see Beth reclining with her wine gently rubbing her cunt. I decided I had been quieter and compliant, so it was time to turn things up.

"Doesn't that look wonderful darling, seeing my cock disappear between the lips of our beautiful niece?"

She responded with a nod while drinking her wine.

"Does it make you hot seeing your stud fuck her pretty face"?

"Um-hum"

"Hey Milly, see that gorgeous wet pussy you're Aunt is getting ready for me to pound?".

She let my cock pop out of her mouth to speak while stoking it.

"I've seen a few pussies in my day but nothing like that. You are a lucky man."

"Don't I know it?"

I could see the naughty talk was affecting both of the ladies, so I decided to turn it up a notch.

"You know Milly, the original cum dumpster in this room right now is your sweet Aunt over there playing with her pussy. Just think of how many loads her Uncle Bill must have pumped in that cunt getting her ready for me."

That brought a moan from both of them. Beth increased the speed and focus with the hand on her pussy. This was new for me, too, as she never straight-up masturbated in front of me.

"If you keep that up, I won't last much longer," Beth uttered as more of a moan than words.

She put her wine glass down and switch hands using her pussy soaked hand to manipulate and tweak one of her nipples.

"Just imagine back when you were Milly's age sucking on Uncle Bill's cock. How hot would it have been to have Aunt Cathy in bed with you making her pussy cum while you watched?"

That pushed her right over the edge. Milly and I stopped everything and watched my lovely wife writhe in pleasure as she came. She kept repeating something that I couldn't make out, but I think it meant that I did a good job. After what seemed an eternity she regained her composure enough for me to understand she wanted fucked right now.

She scooted down the bed, legs spread, motioning with her hands for me to mount her.

"Let me put it in!" Milly begged, "After watching you do this for me, that's all I can think about."

Not waiting for a response we all assumed our positions and like Beth, Milly used her offhand to open the outer lips of her Aunt's pussy while lining up my cock. Unlike her Aunt, she took a few seconds extra and stuck her fingers in Beth's wet pussy. Beth didn't protest, and before she could, I was buried balls deep in her, and she was convulsing again to orgasm number two.

"Good God, how do you make me cum so easy? Watch this, Milly. Watch your Uncle fuck my tits off. Pound me baby, show her what you've got!"

I started thrusting her hard and fast, more for show than pleasure at this point, she was so wet there wasn't much friction. I had her tits bouncing pretty well as ordered.

"See how I'm holding his muscular arms, Milly? That's not just to feel his strength but it's so I can fuck him back."

Beth has always put effort into being on the bottom and never just lying there.

"Uncle Bill must have trained his Little Bee good," I added.

"That looks so fucking hot Aunt Beth. I can't wait until I can handle a fucking like that."

"Oh, you will soon, baby," Beth said, locking eyes with Milly.

Milly moved over next to her Aunts face and lifted the fingers of her wet hand and said, "Hey Aunt Beth, watch me lick your pussy juice off my hand."

With all of the drama she could muster, she overly exaggerated the effort and pleasure like a kid licking the frosting off a beater. Beth's eyes rolled back as she started to cum again.

"You are such a naughty slut. I told you I wasn't into pussy but damn you are tempting me!"

As Beth was coming down from yet another orgasm, I began to slow down from near fatigue, and I was also close to climaxing. Milly dropped her mouth to Beth's and began one of the deepest, most passionate make-out sessions I had ever seen. As it was building up in intensity, it looked more like they were tongue fucking each other's mouths than kissing and that put me over the edge.

"Get ready, Milly! Here it comes!"

With lightning speed, I pulled out and shifted to the same side of Beth where Milly was kneeling on the bed and buried my cock in her mouth to not miss a drop.

Beth still breathing hard said, "That's a good little slut. Drink all of that cum from your Uncle. By the end of this year, he will have pumped gallons into you, just like Uncle Bill did to me."

Hearing my wife say those words made me wonder if I had underestimated the deviance of their relationship. Milly not to be outdone by her dear Aunt said, "Mmm I do love his cum but, that's not the only cum I going to be drinking moving forward my dear Auntie. I want some of yours!"

Before any of us could react, Milly dropped her face to my wife's pussy from the side and put a lip lock on her cunt. Beth reacted with shock, saying something about not giving permission, but from the looks of things, Milly didn't seem to care.

"My God, Richard, do something!"

"On it, dear!"

I jumped off the bed and moved behind Milly as she was bent over eating her aunt's pussy. This was the first time I had a good look at Milly's gorgeous ass like this in all of its meaty glory. Her sweet asshole was buried in there and it was calling my name. I dropped to one knee and spread her cheeks before diving in.

"Fuck, Richard, you were supposed to pull her off me, not eat her ass!"

"Sorry, dear, but you know me."

Indeed, she does. Beth rarely gives me access to her backside, and it's always a treat when she does. My bride was moaning heavily, not putting up much of a fight when she finally surrendered.

"Ok you little bitch, If you're going to do this let's do it right. Help me get a pillow under my ass so you can tongue fuck me properly. But if you can't do as good as your dear old uncle, you're off the team."

"Oh, you just wait, Aunt Beth, you won't be disappointed."

Once we were repositioned, I sat next to Beth so I could watch. She mumbled something to Milly, and our niece responded with, "Remember, you can only say four words."

"She is already learning, isn't she, Robert?"

"You should be proud, you are a great teacher, honey."

"You know what I would love right now?"

"What, dear?"

"Do you think you can get your cock hard enough to fuck our sweet little niece from behind while she eats my pussy?"

"I think with a little help from your dirty little mouth, I can get there. It looks like my little blue pill is helping with that."

I positioned my cock in my wife's mouth as Milly paused to speak.

"You know Aunt Beth, the cock that you seem to love right now still has your pussy juice on it so mine will be the second pussy you taste."

Beth just looked up at me, and I added, "And you two taste just alike, so I hope you enjoy it."

Watching Milly plunge her tongue deep into my wife had my cock ready in record time. I moved around behind Milly and she was shaking her backside and moving her knees apart to receive me.

Between moans, I heard Beth say, "I feel like you two have been working together to make our little group something it wasn't supposed to be."

"We need to keep up with the times, babe," I said as I sank my cock into my niece's cunt.

This brought moans from both as I got into a rhythm. Driving Milly's face into Beth's pussy gave me a new purpose for living. I don't remember all that was said and all that happened but by the time I finally popped, we were all totally spent. We collapsed in a pile on the bed and didn't wake until dark.

***Sometime later

I felt a rustling as Milly tried to gently leave the bed. When she stood up something ran down her leg and I opened my eyes just in time to see her wipe it off with her fingers before sticking them in her mouth. Only then did she notice I saw her and whispered, "Aunt Beth said don't waste a drop," before she trotted off to the bathroom. The ruckus must have woken Beth.

"What the actual fuck happened to me?"

"I think you just got railed by your husband and niece."

"That's not how...