All characters in this story are over 18 years old.
*
Mum sat between us on the outdoor couch as we caressed and talked sex. She told us that she gets so turned on pissing on dad, he likes to watch it happen, and we knew it to be true by how urgently they fucked straight after that. She and Sandy told me about a naughty tryst they'd shared straight after Sandy's 18
th
birthday party, and for a few days after. We talked as if incest was no more remarkable than the weather.
I asked mum the obvious question. Why was she OK with it? She told us about her early days with dad, how their relationship was wild and open, even some foursomes, and she thought that maybe once she'd committed the taboo with her daughter, with me it was almost natural.
Sandy told mum that I shared dad's 'interest' in pee play. She smiled wickedly. Sandy said: "Mum I swear his cock grew an inch when he saw you peeing. That's what set me off and I came."
"Really son? You shot when you saw me peeing?"
"Yeah, mum. It was so hot. I wanna see it again."
"You will, son, but I don't need to go right now."
"Pity. I gotta go though." I stood. Mum grabbed my hand. "No you don't young man. Don't waste it. Do it on me. Let your sister 'play fireman' again so I can watch.
It was as simple as if we were practising a dance step or something. Sandy pulled my shorts down and off. I took of my t-shirt and stood there on the pavement, in front of my mother, all three of us looking at my cock. Mum pulled her tits out in invitation, but the idea was too hot and my cock grew. Sandy laughed, stroked, and looked at mum. She was smiling. We ended up a few seconds later with mum on her back on the airbed beside the pool, me on top and in her, Sandy's pussy over her face.
I contrasted mum's pussy with my sister's. Sandy's was cling-tight, so that without her copious lubrication I'd have had trouble getting my dick inside her. Mum's was more open, softer, but still gripped and milked at me like the expert lover she had become.
We changed positions -- Sandy where mum had been and mum on her face. There were no words, just muffled groans from Sandy, gasping breaths from mum, and my grunting. A thought crossed my mind, and I realised how much I wanted to lick my mother's pussy. I urged their bodies with my hands, they understood, and I took my place on my back, my sister grasped my shaft as she sat down on it facing mum, and I looked up into the wet, open tunnel that I had been born through. I pried it apart with my fingers, looked inside, put a finger in. My cock was aching with lust, even as Sandy rode me gently, but even in my erotically-charged state I was in awe of what I was looking at, a hand's breadth away from my face.
My mother's pussy. Once an abstract fact, now a sexual reality. I heard her whisper jokingly to Sandy: "Is he just looking or is he pussy-shy?"
"I think he's in awe, mum."
Their jest focused me again. With my hands over the tops of her thighs, I edged my mother down until my lips made contact. I wanted to convey something that I couldn't even articulate. I kissed her pussy lips, kissed again. She understood: "It's alright darling. I know."
So I dipped the tip of my tongue in the tunnel, tasting her saltiness and that peculiar liquid honey that she makes. Mum reached under herself with one hand and used her fingers to open herself for me. I saw her clit for the first time, like a little pink-white nub nestled in its hood, and I put my lips over it. She shuddered. Gently, because I wanted her to understand, to feel everything, I darted my tongue at it. Mum gasped, I did it again.
Twenty seconds later I had explored her with my tongue and I knew two things that made her squirm -- the tongue-flick at her clit and having the juice licked from her tunnel. So within a minute, mum was jerking with rippling thighs.
"Fuck, son! You're a natural! Oooh. Oh shit. Oooohh. Mmmmnghhh!"
I have to say at the time I was barely aware of Sandy's pussy on my cock. I mean, I felt her, of course, but I was so focused on licking mum's pussy. So it was a pleasant surprise when I realised my mum and sister were gasping pre-orgasms into each other's mouths, and I proudly pressed up with my hips into my sister while I continued my tongue-worship at the fount of mum's pussy.
I think I was actually smiling in triumph as Sandy sat down hard, burying me right up to her cervix, and ground her clit against my pubic bone. She was jerking like having a seizure, her hands on my stomach, her hips almost a blur as she came. Mum's climax started a few seconds later. I was suffocating with her ass and pussy pressed against my face, my tongue licking madly inside her as she ground her clit on my chin. My nose was against her asshole, I could smell nothing but sweat and woman.
Some seconds later, Mum's weight lifted off my face. I was wet from nose to neck from her, I saw past her pussy to my cock still inside Sandy. They were giggle-kissing now, I could feel Sandy's laughter transmitted along her tummy onto my cock.
I had not cum despite the sexual electricity, perhaps because I was giving my sex to my mother and sister, not taking from them. I was to find out over the years that our incest was like that -- sometimes one or another of us devotes the experience to the others. But it always, always gets repaid in full, with interest.
Mum said: "Did he cum in you, sweetheart?"
"No."
"Oh. You didn't cum yet baby?"
"No mum."
"Hmmm. What shall we do about that?"
She climbed off my face and sat beside me. My eyes were drawn between her legs again.
"Oh, you wanna see more? Huh?" She spread her legs wide and showed me her wet, shining pussy. Impossibly pink inside, pearly-pink outside, and as bald as if she'd never had pubes. One arm supported her as she lay back, with the other hand she opened her pussy, put two fingers inside.
"Now you can see close-up, son. You don't have to sneak in the bushes to watch any more."
Sandy began to milk me gently with her wet glove, leaning forwards with her hands on my chest. I looked at her -- she was as transfixed by our mother's erotic masturbation show as me.
"Yes, my darlings. This is where your daddy came and we made you both. And this is where you both came into the world."
