Chapter 783 Moment Of Truth, Fucking Sister In Front Of Mom[DD SPONSORED]

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When Alan came back after a suspiciously long bathroom break, Katherine took charge. "Okay, Bro. I want you to just lie back on the bed. Like you were before, except you don't need to hang your legs over the side. Get comfy."

He laid in the middle of his bed, with his head on his pillow.

Katherine looked at Susan anxiously. "Okay, Mom. This is going to start out with just Brother and me at first. So hold onto your hat, okay?"

Susan sat on the edge of the bed. She nodded.

Acting quickly, Katherine took Alan's cock in hand and then straddled herself right over his privates. Then, in just a matter of seconds, she suddenly impaled herself all the way onto Alan's cock until he was fully sheathed in her!

Susan screamed and stood up in shock and surprise. "ANGEL!" She was stunned, because she was under the impression that this was the very first time he children were fucking each other.

Alan was equally shocked, if not even more so. Nobody had informed him yet that Susan had agreed that Katherine and he were allowed to fuck. He'd heard Susan say something to that effect earlier in the day, but he'd thought that was just sexy talk, since Susan had been insanely aroused at the time. So he didn't understand why Katherine would be so disrespectful in front of their loving mother.

He cried out, "Sis! What the hell are you doing?!"

But Katherine yelled back, "It's okay! Mom and I talked in the shower! That sexy talk earlier? It wasn't just sexy talk! She totally agrees! We're allowed to fuck! We have permission! So let's do it!"

Susan had somewhat recovered by this point, although she clutched at her chest defensively like she often did when she felt threatened. She pointed out, "But Angel! I also told you that I wasn't ready to see you two do it yet! It's one thing to agree in theory; it's another to actually watch, for real!"

Katherine was still just sitting with Alan's cock buried deep inside her, waiting until this got sorted out. If Susan was truly upset, Katherine could always back out on her plan, and back up off her brother's cock, thus at least minimizing the damage. But she wasn't ready to give up just yet.

She pointed out, "That's true, but consider this as 'tough love.' If I don't push you, it might take you a week or more before you feel ready. And I can't wait that long! I want you to be here and see our very first time together!"

Of course, that last comment was a lie, since Alan and Katherine had already fucked several times. But Katherine knew that Susan didn't know that, so it was important to maintain the fiction. Besides, she figured this could be a second first time, in a way. It would be an extra special thing to have Susan watch for the first time, at least.

Luckily, that comment melted Susan's reservations. The loving mother cried out, "Oh, Angel!" She scooted close and wrapped her arms around her daughter. They would have kissed except that she hadn't gotten quite close enough for that.

Katherine hugged her mother tightly. "Mom, remember how much you loved watching Brother and Aunt Suzy fuck today? Why not enjoy that again, except with him and me instead?"

Susan laughed heartily as she realized the reason for her reluctance. She explained, "The problem isn't that I'll hate it; it's that I'll love it too much! Seeing you with his wonderfully thick cock all the way in you... Oh Angel! Do you know what that does to me? I haven't been able to get the image of him fucking Suzanne out of my mind since it happened. It's keeping me so hot all the time, and not just to suck, but to get royally fucked too!"

She went on, increasingly breathless, "If he's fucking his own sister, then it's just a matter of time before he fucks his own mother too. I know that on some level, but this makes it really hit home! It's gonna drive me crazy! Oh God! All that hot, sweaty, incestuous thrusting! I think I might just DIE of envy and fuck lust!"

Katherine giggled, then pulled her mother in still closer, and up higher, so they could kiss each other. "Don't die, please. At least not before you and Bro do what he and I are doing now!"

She grew serious, and looked Susan right in her eyes. She spoke quietly. "Mom, is this okay? I decided to just go for it and see what happens. I guess I'm kind of uppity that way. I want you to be here for this. It means a lot to me, like we're his fuck toys forever, united in our servitude to the man we love. But if you're really bothered by this, I can stop right now."

Susan looked at Katherine intently, and realized that she really meant it. As she pondered the situation, she looked down at where the crotches of her two children met. With the way Katherine was sitting on him while he was balls-deep inside her, she couldn't see much direct visual evidence of any fucking; Katherine could just as easily have been sitting on his flaccid penis.

She felt greatly relieved by that, because she was having a very difficult and emotional time with this situation. The three of them were all extremely excited, with their hearts racing, but hers was racing the fastest of all. She seriously doubted whether she could handle seeing Alan's cock inside Katherine - she might pass out altogether!

She finally spoke, in a tender voice. "This is your first time. With your brother! Your master! OUR master! Of course I don't want to stop you now. This is a beautiful moment I hope you'll treasure forever. I'm just so touched that you... that you decided to share it with me!"

Susan suddenly teared up. It came out of the blue. One moment she was smiling, and the next moment she was crying her eyes out. Somehow, saying "you decided to share it with me" made her extremely emotional.

As soon as Susan started crying, Katherine couldn't help but cry too. Within moments, the two of them were bawling like they'd just been told a close mutual friend had died. Except their tears were those of joy, love, and general emotional intensity.

Somehow, Susan managed to choke out the words, "Angel, you're all grown up now! A real big-titted fuck toy, getting fucked!"

That only made the two of them cry twice as hard.

Katherine was conflicted. She was well aware that she was lying about this being her first time, and she felt very guilty about that. But at the same time, the emotion of the moment had a life of its own and it felt to her as if it really was her first time! Somehow, those earlier times didn't seem to count the same, not if Susan didn't know about them or wasn't there to approve and hold her. She felt this so strongly that soon her guilt was nearly forgotten, and it really did seem to be her first time.

She even shifted around on her brother's stiff cock inside her as if experimentally testing her feeling of exquisite fullness. That truly felt brand new, somehow. Logically, she knew his boner was the same size as always when it was completely stiff, but it felt like it was filling her twice as much as ever before, and it felt incredible.

So it was completely sincere when she surprised even herself by crying out, "Mom! Brother's cock is all the way in me! So thick! So full! SO BIG! Ungh! We're joined together! Forever!" At the same time, her tears continued to stream down her face.

Susan was crying her heart out as she replied, "You are! You are! Oh, Angel! It's so beautiful!" After gathering herself together a bit, she managed to briefly wipe her eyes clear, exclaiming, "Thank you for sharing this magical moment with me! My two children, joined together! Brother and sister! Master and slave! I'm so... so... HAPPY!" She burst into a fresh round of sobbing.

Katherine did too. Their faces were touching as they cried and cried.

Alan felt very strange through all of this. Since Katherine was facing towards his feet, he couldn't make eye contact with either one of them at the moment. Susan might have looked over Katherine's shoulder and down at him, but tears were flooding her eyes so much that she couldn't really see him even if she tried. So he felt like he was forgotten.

But at the same time, his cock was fully sheathed in Katherine's tight cunt! And even though his sexy sister wasn't paying much attention to that, she was inadvertently bouncing lightly on it and sometimes clenching at it as her entire body shook from sobbing, as well as from clutching Susan in slightly different poses.

So, while the other two were having an intense and moving emotional experience with each other, he was enjoying a very pleasurable fuck, almost by accident! It was an odd experience indeed.

He also felt extremely emotionally moved. Although he felt guilty as well by the fact that this wasn't really his first time with Katherine and they'd kept that fact a secret from their trusting mother, he knew this was still a very pivotal moment in the lives of all three of them. This perfectly symbolized how they were now all joined together sexually, in addition to being a very loving family in other ways.

He would have bawled like a baby too, except that he'd deeply internalized the idea that men weren't supposed to cry. Even so, some tears came to his eyes. He repeatedly tried to wipe away the evidence, but it seemed to be a losing battle, due to all the fresh tears.

Susan suddenly seemed to realize that he was being left out. She let go of Katherine and moved slightly to the side of her daughter's torso. Then she dropped down, squashing her gigantic tits on her son's chest. That brought her face right up to his. She tried to hug him as best she could, considering that he was lying in bed. "Son! You're fucking your sister! How does that make you feel?"

It was a simple question, but he choked up and his tears really started to flow. "Oh, Mom! It's so good! I love her so much! I love you so much! I love this whole family." He exclaimed in a louder voice, "Sister, I love you!"

Katherine cried out while sobbing, "I love you too! Brother! You're in me! You're IN me! My God!" With Susan on one side of her, Katherine managed to turn around, spinning in a half circle with Alan's stiff cock still balls-deep in her.

Now she could make eye contact with him, in theory. In reality it didn't work out that way, at least not yet, because Susan's face was over his and Katherine was too teary to see clearly anyway. But still, she felt more of a connection with him facing this way.

With tears gushing down her face, Susan kissed up Alan's neck, jaw line, and chin, until her lips came to his mouth. But before she kissed him there, she whispered, but still loud enough for her daughter to hear, "Son, you've taken your sister's virginity! She belongs to you now! No other man will ever fuck her. EVER! You've tamed her; now you own her!"

Susan followed up by planting a scorching kiss on his lips.

Since Katherine heard all that, she cried out between heartfelt sobbing, "Forever! No other man will EVER fuck this cunt! Brother! Master! I'm yours forever!"

Remembering that she was in fact fully impaled in him, she started bouncing up and down on him in an intentional and highly mutually-pleasurable manner. "I'm your fuck toy, your slut, your bitch, your slave! Your sister! Your lover! Whatever it is you want me to be, I am! I'm yours and yours alone, because I love you so much!"

Alan was sobbing as much as the other two were now. He broke his kiss with Susan to complain, "Awww, Sis, why do you have to say all that? Now you've got me crying like a baby too! It's damn embarrassing!"

Katherine giggled through her tears. She said proudly, "That's because you love me! As much as I love you! And now I've got a brand new way to show it and share it. Like THIS!"

She'd already started bouncing rhythmically on him, and it felt fantastic for both of them. But when she said "Like THIS," she lifted herself up until she'd actually pulled all the way off his pulsing, hot pole. But she still held it with a hand, and she ably and almost violently sat back down on it, skewering herself in the process.

She screamed with all her might as a massive orgasm smacked her like a freight train. "AAAAIIIIEEEE!" She brought her hands to the sides of her head because she felt like her brain was splitting from the intensity of it all.

Susan tried to turn her head around, startled by the shrill scream. "What's that?!"

Alan held his mother's chin and had her turn back. He knew she wouldn't be able to see any of the action in her current position anyway. He explained, "She just impaled herself on me again. All the way! Oh God, Mom! You wouldn't believe it. It feels so fucking good!"

Susan's flowing tears dripped down onto his equally wet face. "Son! Fuck her good! Fuck her so good! Fuck her into the next century! Fuck her and love her with all your might!" Then she planted another scorching kiss on his lips.

So far, Alan had been lying there, nearly entirely immobile. Because Katherine was riding him cowgirl-style, it hadn't occurred that there was anything he could do to make things even more pleasurable for her. Besides, there'd had been a lot of crying but not much actual fucking. But after hearing Susan's inspirational words, he decided he needed to at least try to do all he could. He began thrusting his hips up as much as possible.

Katherine was still shaking and crying her way through her Earth-shattering and very prolonged orgasm. Part of the way through, she'd slapped her hands down onto Susan's back to remain sitting up, and it was a near thing that she didn't collapse onto her (and Alan underneath) altogether. But, feeling his thrusts, she was just as inspired and determined to make the most of the moment. Despite feeling like her bones had just turned to jelly, she resumed bouncing up and down in perfect time with his upward thrusts.

That felt so very fantastic that she discovered a new surge of energy. That in turn allowed her to bounce on him with greater passion and vigor. Once she got going with a steady rhythm, she yelled, "Mom! Look! We're fucking! We're really fucking!"

In that moment, at least, Katherine was completely convinced that this was the very first fuck of her life. It certainly had all of the emotional intensity of that. In fact, it was even more emotional than their real first time. Having Susan there and approving made a big difference. It wasn't just two of them fucking, it was the three of them bonding as a family.

Alan's energy level was rising and rising. He felt trapped between both Susan and Katherine, because he wanted to do much more than his relatively ineffectual upwards thrusts. So, after necking with his mother for another minute or two, he said, "Um, Sis? Mom? Could we switch positions again? I'm ready for some serious thrusting!"

Susan sat up on him, but only just enough so her great tits were dangling down and lightly resting on his bare chest in an extremely visually tempting manner. She said, "Son, don't ask, take! You're the man of the house now. You've spermed us into submission! If you want to fuck your sister, fuck her good and hard! Show me what you've got, and what you're going to do to me. Angel, you were so right in making me witness this! I'll never forget this! I'll treasure this memory for the rest of my life!"

Her tears had finally stopped because she was so delightfully distracted by kissing her son. But she still spoke with great emotion as she said, "Son, I only hope that when you fuck me - and SOON! - it'll be half as special as this. I love BOTH of you more than life itself!"

She sat up and then moved to the side. "Now, Son, give it to her! Hard and fast and deep! Just like you're going to fuck your mommy!"

He certainly didn't need any more inspiration. He was about as aroused as any man could possibly be. But Susan's "fuck your mommy" comments raised his energy level even higher. He felt like some kind of rabid and insane animal, totally given over to carnal desire.