It was Thursday afternoon in early May, when I lay naked and supine on my bed; a couple of pillows beneath my pelvis were arching my back and raising my bum above the mattress. My younger sister Jane was equally naked and knelt atop me, her thighs straddling my face, the moisture leaking from her pussy dripping onto my lips and chin.
Until a minute ago Jane's tongue had been teasing at my pussy too, when she'd withdrawn that delight and replaced it with a wicked double-dildo. The rearmost prong of Jane's dildo resembled an extended finger and that was buried inside my bum; a new sensation for me, it's initial intrusion had drawn a gasp and sent my temperature soaring.
While that dildo was a novel experience for me, my being in this and similar situations with my sister was far from unusual. Marriage and more especially our children had significantly curtailed our teenaged shenanigans; but twenty five years on, with all of our the kids having flown their respective nests, we were again able to more regularly indulge in our sapphic pleasures.
After a slow start, Jane was now applying that dildo with increasing speed and aggression. Jane also began to twist her wrist on each withdrawal, making those twin shafts apply pressure to and stretch the opposing walls of my pussy and bowel during each penetration. That sensation had the desired effect, my climax was approaching... And rapidly.
How much I was enjoying Jane's ministrations would've been apparent from the frantic bucking of my pelvis and the wail of disappointment that arrived in the moment after Jane's violation abruptly ceased. I was on the precipice, how could Jane be so cruel? My voicing that thought was curtailed by Jane sitting more upright, pressing her sodden pussy down onto my lips.
"Now that's a surprise; probably for me as much as you..." What??? My frustration now mingled with confusion at Jane's words.
"... Though judging from that tent in the front of your pants, a not unpleasant one."
Oh Jesus! I wasn't the one Jane was speaking too! What the hell was Dan doing here? It could only be my husband, I knew I'd locked the doors and nobody else had a key. When we'd spoken on the phone earlier, Dan had been in Guildford, how could he have got back home so quickly?
Pinned between Jane's thighs I couldn't hear the reply, but there had to have been one, given the delay before Jane spoke again. Yes, I know I could have thrown Jane off me, but that would've left me face to face with my husband; my fear of that encounter far outweighed the frustration of my not hearing. Neither Dan, or Jane's husband Barry had any knowledge of our frolics.
Jane rocked slightly forward again in the moment that she plucked the dildo from my body. Terrible timing, insofar as it allowed my cry of loss and disappointment at its departure to reach Dan's ears too. "I'm sure that Mary would rather have a real cock to conclude proceedings; but you'd better be quick... don't let her go off the boil."
David's reply was again beyond me, though I perceived that I heard the rattle of his belt buckle and the swish of his zip; though that couldn't have been true, I had to have imagined it. What I didn't imagine though, was the sensation of the mattress moving beneath me as a third person clambered onto the bed, nor the brush a male thighs sliding between my own.
I now heard the other voice, not sufficiently to discern the words, but its timbre at least; it was definitely male. Jane's voice came through clear enough, were they being transmitted via the vibrations between our entwined bodies? "That's up to you... Back or front, they're both well lubed and wedged between the two of us, Mary's not moving anywhere."
I began to tremble, given the situation I knew which orifice Dan would choose. My husband had been asking, at times pleading, for me to surrender my bum to him for years and today, I was in no position, either physically or morally, to refuse him; I tried my best to relax; recalling that Jane had once told me that was the best way to accommodate a man in there.
The penetration arrived a few seconds later; the full length of Dan's cock sliding into me easily and in a single smooth stroke. It went into my pussy rather than my bum and somewhat perversely, despite my reservations, I recall feeling a moment's disappointment at Dan not having taken his opportunity to claim my bum.
There were more male mumbles concluded by Jane's "I told you she was slick; absolutely ripe for your cock. Now don't get too carried away, I still want Mary to be able to give my pussy some more attention while you're fucking her."
In hindsight it was crazy: My husband's cock was scything in and out of my pussy while my sister sat astride my face and I made no complaint... Hell, I began tonguing Jane's pussy just as she'd demanded. Not for very long mind, I was as horny as heck and hadn't gone far 'off the boil' at all; half a dozen deep strokes and Jane was forgotten, half a dozen more and I orgasmed hard.
Dan gave me a few seconds to recover my equilibrium and by way of Jane's writhing and feline purrs, coupled with the sound of deeper growls from Dan, I perceived he was entertaining himself with Jane's boobs while he waited. A sharp squeal and a jerk from my sister added weight to that opinion, while her words confirmed it.
"No, don't stop; that's just how I like it... You can bite them too if you want." A slight change in David's position and angle of penetration as he recommenced spearing into me suggested he was doing exactly that. While Jane's voice not only provided confirmation once again, but seemingly fuelled the rapidly increasing strength of the fucking that Dan was giving me:
"Oooh you like those don't you.... And you've spent enough time giving them the eye over the years... I'll bet you've often thought about Auntie Jane's tits while you were whacking-off... They've always been big... Even as youngsters they were much bigger than your mum's."
With the distraction of a rapidly building orgasm, I'd missed the reference to 'Auntie Jane', but even in the throes of that climax arriving, 'bigger than your mum's' came through loud and clear. It wasn't Dan's cock ploughing into me, but that of Chris; my younger son! I'm only 'mum' to three people; my eldest child Terry is in Australia and it certainly wasn't my daughter Carol between my legs.
I went ape-shit in the instant that realisation dawned, pitching and bucking beneath Chris and Jane and whilst I didn't dislodge either, I gained enough freedom to howl like a banshee, though to a degree, even that dissipated into the void of my sister's gaping pussy. Chris and Jane were both howling too, but with laughter; did they think it was me simply climaxing again?
A moment later Chris' cock was abruptly plucked from my pussy and their laughter ceased in the same instant. I assumed that my discomfiture had finally become evident to them, though my groan of obvious disappointment at Chris's withdrawal -- I didn't mean to, but in the moment I couldn't stop it escaping -- didn't reinforce my protest.
