Both of them look down to where my dick is standing out, and I see (and feel) their nipples start to erect before Helen tells me "I can see that you're almost ready. Let's go ahead and get comfortable so we can keep going!"
Before we get onto the bed, though, Helen and Sarah take a moment to kiss each other; Sarah turns loose of my dick so she can return the favor when her mother puts her hand on the breast that I'm not busy with. When they're done, Helen guides me to the middle of the bed before she and Sarah move to lie on each side of me. They're on their sides, resting on their elbows looking down at me when Helen tells me "This is the first time that Sarah and I are both with the same man – but we already know that we aren't jealous of each other, and neither of us gets hurt or upset if one of us gets a little more attention than the other; so you don't have to worry about doing something with one of us and not doing it with the other."
Sarah speaks up to let me know "We've learned that both of us like pretty much the same things, though each of us has some things we like more than others. But both of us like pretty much all of it, so you don't have to worry about making either of us happy. We'll trust that you won't 'push' things if you start to do something that one or the other of us doesn't want – but I don't think that will be a problem."
I looked from one to the other before answering "No, I won't 'push'; it's not my way to try and force somebody to do anything they don't want, or like. And I'll trust that you'll understand that I won't know what your 'limits' are until I come to them, if it gets to that point."
Both nodded their understanding and acceptance, visibly pleased to have my verbal confirmation that I wasn't going to try and do anything that would upset them – at least, not deliberately.
That out of the way, the two of them shared another look before each sat up long enough to pivot on her butt so that they were head-to-head (so to speak) with my erect penis. Helen was the first to lower her head and take me in her mouth; Sarah was content to watch after extending a hand and starting to play with my scrotum and testicles.
Helen may not have gotten as much action from her husband as she wanted, but she certainly seemed to have made the most of the time she DID have with him: she did an exemplary job of using her lips and tongue to stimulate the head of my cock before taking nearly the entire thing into her mouth and gently sucking on it for a little bit. Then she got serious about getting me fully erect, and started doing everything she knew to stimulate me to full hardness.
It didn't take her long (!!) to accomplish that goal; when she had, she let me slip from between her lips – apparently so that Sarah could have a turn with me, too. Sarah didn't quite have the skills her mother did, but she certainly made up for it with enthusiasm. While Sarah was doing her thing, Helen added to my pleasure by lowering her head and using her lips and tongue on my balls.
I almost as much pleasure from watching them as I did from what they were doing, and I wanted to enjoy it for as long as I could. To 'distract' myself from the sensations they were generating, I decided to take advantage of our relative positions: while they were industriously applying themselves to stimulating ME, I had two very nicely shaped asses within reach. I was easily able to reach out and put a hand on one cheek of each of their asses, and both of them wriggled a little closer to me so that I could reach more of them, and more easily.
As I'd thought, Sarah's ass was small, tight, and firm under my hand; Helens wasn't quite a match for her daughters, but she didn't miss it by a whole lot, either. In both cases, their skin was soft and smooth and warm to my touch; it was a treat for me to have both of them to enjoy. And when my questing hands finally started to move between their thighs, each of them readily opened herself to my tactile investigation.
My fingertips told me that both sets of labia were long and thick, but still soft; the area between was already slick with eachs arousal. Sarah's pubic thatch was slightly larger than her mothers, and noticeably softer, while Helens was a bit more luxurious in thickness and 'texture'; both were pleasing as hell to my fingertips. Their similarity ended when I reached their clitorises, however. Helens was distinctly larger, while Sarah's seemed to be more sensitive; I was looking forward to finding out just how different they were.
While I was learning all of this, Helen and Sarah had established a pattern of arousing and pleasing me: each would have me in her mouth for a little while, while the other would apply herself to my balls; periodically, they would switch. I could feel a difference in the way each of them went about simulating me – neither was better or worse than the other, just different. And it was a difference I would have delighted in having the opportunity to get used to.
Still, I did have two females doing a singularly excellent job of giving me a tag-team blowjob. As much fun as I was having playing with their asses and exploring the area between their thighs, the stimulation they were providing was moving me closer and closer to a climax. I cautioned them "If you two keep going like that, I'm going to cum!", only to have Sarah answer "Good! When you're ready again, you'll be able to fuck both of us for a nice, long time!"
Figuring that if they were going to take that kind of attitude, I might as well give in, I simply quit trying to hold off. It wasn't but a very few minutes before I felt myself getting close to blowing my load; when I told them that, it was Helen who replied "That's fine – both of us like the taste of cum, whenever you're ready!"
Another minute, and I did let go – into Helen's mouth, I think. But it didn't matter, really, because after the second spurt of my semen rocketed from the end of my dick, I felt them swap again, so that the other one got the rest of my cum. It mattered even less when I opened my eyes after it was over, and saw the two of them involved in what was clearly a deep, passionate kiss – and obviously sharing my jism with each other.
When they finally separated, they both turned to look at me with cat-that-ate-the-canary smiles on their faces before Helen told me "We both know it'll take a little time before you're ready again. Maybe it would help if you watched while we keep ourselves… occupied? Of course, you're certainly welcome to join in if you'd like."
"Yes, it will take a little time; but maybe not as much as you think. And it certainly would help if I could watch and join you", I answered with a smile of my own before moving to sit cross-legged so as to give them more room for whatever they wanted to do.
What they wanted to do was kiss each other again, with the addition of caressing each others breasts. From my vantage point, it was almost like watching ONE woman pleasuring and arousing a copy of herself, the two of them were so similar in appearance. But the knowledge that it wasn't just one woman, or even two sisters, but a woman and her daughter that both fascinated and stimulated me more than I thought possible. I could see two sets of very similar breasts develop erect nearly identical sets of nipples as each caressed and teased the other. Their kisses were long and gentle, but no less passionate because of their leisurely pace. It wasn't but a few minutes before I saw Sarah's hand begin to move down her mothers body, and end its journey between Helens thighs; soon afterwards, one of Helens hands followed much the same path, and stopping at the same spot on her daughter. After only the briefest glance toward me, Helen lifted one leg to put the sole of her foot on the bed – giving me a clear view of how Sarah was softly stroking her labia and clitoris. A moment later, Sarah mirrored her mothers position, and giving me the opportunity to watch when each of them eventually slid a slender finger between the folds of the others labia and slowly bury it deep inside her partners vagina.
The way they were sitting, I could easily see that my fingers hadn't lied to me: both sets of vaginal lips were somewhat long and a little thick; at the apex of their clefts, their respective clits were readily visible. It wasn't but a few seconds before eachs finger was shiny with the others juices; it wasn't long before I could detect the heady aroma of aroused female.