Very important note: I've always loved accidental penetration stories even if they're usually not realistic. And so this is a very lighthearted story. It's not meant to be an accurate representation of something that could actually happen in real life! On the other hand, around that highly improbable incident, I'll try to make the story as interesting as I can. If that's not your cup of tea, find another one of my stories.

Edited by: Pope1944. Thanks!

*****

On the morning following his accidental penetration of his older sister's pussy, Dustin walked down to the common room where his family shared their breakfast. Back home, in the real and clothed world, such meals with everybody present, nobody in a hurry and nobody on their cell phones were virtually non-existent. At least not for ordinary days. They often met to celebrate birthdays and other holidays, but it wasn't a regular thing.

The meals back home were also different in another way: nobody was naked! By now, this was the beginning of their fourth day here, Dustin and the rest of his family were very much at ease with nudity. Strangely enough it was harder for Dustin to get used to seeing his father naked than his three sisters and his mother. He had no idea why. But even that discomfort was pretty minor by now.

As breakfast was nearly over, Dustin's mother reminded him of something that was, in fact, a huge discomfort. The dreaded ball. For some reason or another that Dustin couldn't figure out, this nudist colony held grand balls on a weekly basis. Obviously people didn't go there dressed in gowns and tuxedos, but they handed over some small items of clothing (like garters, veils or high heeled shoes) to try to add some elegance to the whole thing.

Not only did this colony held balls, but they insisted on their importance. While Dustin was comfortable enough walking around naked while surrounded by many naked girls and women, the idea of dancing while in the nude? And it was not just the random twitching that passed for dancing in clubs. Oh no. Waltzes and other fancy dances he didn't even know the names of. And always with the couples holding on to each other. Very closely. In some of the dances he had seen last year, the two partners were pretty much hugging each other.

Maybe if Dustin had had a girlfriend with him... But then again, at twenty years of age, holding your girlfriend in a naked hug pretty much meant an erection. Doing it with a strange and beautiful girl? Impossible! The shame of feeling your erection growing without being able to stop it because it kept rubbing against a deliciously naked thigh? Oh the shame!

The last time he thought about it, he wondered if any of his sisters would agree to dance with him. But now that he had fucked Emily and Erica, those two were even more dangerous to his erection than beautiful strangers. And given that Lily was Emily's twin, Dustin didn't think that it would make much difference. And his mother would dance with their father, of course. Fuck!

So when his mom asked him if was ready for the ball, that would happen tonight, he shook his head and buried his face in his hands. His dad slapped his shoulder and told him to man up. Erica, on the other side of the table, laughed and said "That's exactly what he's afraid of!" As the other members of their family got the joke, they all laughed.

Dustin covered his face again and said "Is this ball a conspiracy to humiliate young men?"

They spent another fifteen minutes trying to tell him that it wouldn't be too bad, but Dustin wasn't so sure. With the others all gone to various activities, Dustin was left alone with his mother. And her breasts. "Damn they're so fucking huge!" he thought. "If Hayden had 34D bras and Erica's breasts were bigger than hers and in turn his mother's breasts were bigger... Shit!"

On one hand he had seen lots of obese women with ridiculously large breasts that defied his ability to imagine bras that could contain them. Not only that, but those fat breasts looked like large flat pancakes resting on their huge bellies. Nothing erotic there. "Maybe," Dustin thought. "Maybe I could get one of those women to dance with me?" But he dismissed the thought.

His mother had very large breasts, but she wasn't obese! Well, she probably landed in the overweight category but only because of the extra pounds she carried in those breasts. If Erica reminded Dustin of the pin-ups of the fifties, he was pretty sure his mother could have been one when she was younger. Even at her age, in her mid-forties, her breasts were still proud and hadn't lost the fight against age and gravity.

He closed his eyes and tried to think about something else. "Tell you what..." his mom said as she stood up. "Why don't we practice dancing?"

"It's not the dancing that worries me. I should be able to pick that up easily enough." he replied.

"I know. You're an excellent dancer!" she said with a smile, a typical motherly comment. "But why don't you try dancing with me in the nude?"

"What?" Dustin said after swallowing.

"Why not? That would allow you to get used to the idea. Remember how uncomfortable you are during the first day of being here? Maybe it could work the same way."

"Mom! That's a terrible idea. Thanks, but that will never work!"

Frowning, his mother sat next to him and placed her hand on his shoulder. "Why not?"

"Mom! Please!" he felt himself flushing and didn't know where to look with his mom so close.

"What is it? Are you ashamed to dance with your mom?" she asked, a sweet smile on her face.

"No. Not at all..."

"So, what is it?"

Dustin sighed. "Mom... When I imagine myself dancing with a pretty girl and then I get..." he paused and coughed, really uncomfortable suddenly. "And I get an erection!" he added in a whisper. "I just can't imagine dealing with the shame!"

"The shame?" she asked. "It's just natural!" she sighed. "You're just over inflating the problem!"

"Mom!"

His mother realized the unintended pun in her last sentence and laughed. Dustin relaxed and added "And if we go practice, what do I do if... if... if it happens with you?"

His mother's eyes opened wide and looked shocked at the thought. Not in a angry way, just a profoundly surprised way. "Oh, forget it mom... Thanks for the offer, but I guess I'll just have to die of shame tonight..."

"Stop it right there young man." she said in her authoritative voice.

Dustin had realized very early, even when he was just a little kid, that his mother was the real authority in his family. When he heard that tone, he knew he had better turn around, otherwise there would be hell to pay. "Yes, mom?"

"Let's make a deal. Let's say you practice with me and do have an erection. First thing I promise is that it's going to be our secret. Second, if you can't learn to get it under control, I'll let you skip the ball."

Dustin stood there, looking right into her eyes. "You promise?"

"Yes. Do we have a deal?" she asked.

"We do. When do we start practising so that I can forget about that damned ball?" Dustin asked with an impish expression on his face.

"In one hour. In your room. We'll tell the others not to bother us for at least an hour. Private dance lessons for my son!"

"Great! See you then!" Dustin walked away, looking at his mother as she sat back down and sipped her iced tea. She looked perfectly relaxed and confident, as if dancing nude with her son was normal...

But Tessa wasn't relaxed or confident at all. She was, in fact, extraordinarily nervous. If she hadn't seen Dustin and Erica fucking last night, maybe she could have offered him dance lessons and maybe she would have been able to deal with any erections that might appear. But now that she had seen that and knowing that she hadn't been able to control her urge to masturbate at the sight of her son's cock ploughing into her daughter's pussy... Well, that was an entirely different matter.

Tessa wondered if she had offered those lessons out of a genuine desire to help him, or out of genuine desire for him. "Damn it..." she thought. Would she really be able to handle it if he ever got an erection, and if it brushed against her thighs? Or pussy? "Christ!" she thought. "I'm in so much fucking trouble!"

An hour later, Dustin swallowed hard when he saw his mother walking into his room. He had been thinking about the fact that he would be dancing with his mom, their naked bodies entangled, her huge breasts against his chest... And now he had to force himself to tear his eye away from those two breasts as they swung and bounced as she walked towards him.

"Don't look like you're about to be executed!" she chided him.

"No, that's only later tonight..." he replied sullenly.

"Pfff! Nonsense! After our practice, you'll be able to go to the ball with confidence. And if you don't already know this, you'll discover that girls melt for confident guys that can dance. Real dancing I mean."

And with that, she placed an old CD player on the table and pressed play. As she thumbed through a few CDs, Dustin looked at her. Besides her very delightful body, his mom had another stunning feature: her hair. While he knew that she often used shampoos that enhanced their color, their natural red was stunning on its own. Maybe a bit darker than the very bright red that some redheads had, but still remarkable enough. But besides the color itself, Dustin's mom had a very thick mane that she kept very long, all the way to the small of her back. And in front, there was a matching red patch of hair above her pussy. Wider than Erica's strip, but stil carefully trimmed as well.

After she pressed play an old tune, Dustin guessed that it was from the 40's, began to play. His mom then pushed the bed and the sofa away to clear up some space. After that, she looked at him and extended a hand. After a long sigh, Dustin got up. "Remember our deal. If I humiliate myself in front of my mother and can't control myself, I don't go to the ball. Right?"

"Right." she confirmed. "But you won't humiliate yourself, even if you do have an... an involuntary reaction." As she took his hand, she looked straight into his eyes and said "Let me make that clear: if it happens, just ignore it and I'll try to do the same. Just work your way through it. I'm not some girl you don't know and I won't panic if it happens."

Tessa saw her son nodding, but could also see that he was barely managing not to run away as it was. "Let's begin with a slow waltz. That way, if something happens, it will be trapped between our bodies." Her son mumbled his agreement. "You'll have to come much closer my dear." And with that Tessa pulled her son directly against her body, feeling his thighs against her, his cock against her lower belly and this chest against her breasts.

Judging by his two previous girlfriends, Tessa believed that her son wasn't into large breasts, so that should lessen the threat of an erection. What she didn't know was that Dustin was discovering, more and more each day, that his brain was essentially programmed to like big breasts.

In the end, the first dance went pretty well. Tessa felt that while her son's was really stiff, his cock was still soft. "Shouldn't it be the opposite?" she thought and then mentally swore at herself. "Soft and relaxed all around!" Out loud, between the songs, she said "You see, it wasn't that bad? Now, for the second dance, just relax. Forget about getting all the steps right and just flow with me."

"Ok... I'll try," he replied.

And about halfway into the song, she felt him succeeding. He felt more like a living being rather than a wooden board and he looked into her eyes from time to time. He even smiled at her. But by the end of the song, she could definitely feel his erection against her thigh. And he froze as he felt it as well. "I'm sorry mom..."

"Shhhhh," she cut him off. "Don't think about it, it'll go away."

She didn't know if it was the case, but she certainly hoped so. For his sake and hers. Even if her own physical reactions to his presence weren't as obvious, Tessa could certainly feel her body reacting to him. She could feel a growing tingle between her legs. She took a deep breath and tried to think of anything else. And failed. Her mind felt like a ping-pong ball between his growing erection and her memories of him fucking Erica.

Pulling his head closer against hers, she bit her lower lip and hoped for the best. Soon though, his erection became so hard that it was an impediment to the dance. Until then they had managed to keep it pointing downward, trapped between their thighs. Maybe if he moved away slightly, it could become less awkward? Tessa didn't know that she wasn't fully in control of her thoughts by then, didn't realize that if she released the pressure of her thigh against his, there was only one thing that was going to happen.

And so she did it anyway. As soon as her son't cock was freed from the temporary trap, it flew straight up between her legs to slap noisily against her pussy. The wet quality of that noise was unmissable. Mother and son both gasped at the same time and she felt Dustin wanting to pull away. "No..." she said breathlessly. "Wait a moment. If the girl doesn't pull away, it means that she understands."

"But mom... This is... it's..."

"Practice. Nothing more," she replied. She hoped that he wouldn't notice that she was burning with lust, forbidden lust for her son and his cock.

Dustin's mind was going in all sorts of directions at the same time. "How the fuck could she let me stay there, my rock hard cock rubbing against her pussy?" he wondered. He also realized that while this wasn't actually an accidental penetration, it came close enough to make memories of Emily and Erica pop into his head. Which wasn't, at all, a good idea. But more than that, he was fully aware that his erection had nothing to do with Erica or Emily and everything to do with his mom.

Her breasts, so impossibly big and firm for her age, dominated his thoughts ever since she had walked in. But as he held her, he discovered that the generous curve of her hips and the feeling of her large rounded thighs against his were intoxicating as well. "How the fuck can I be attracted to so many different girls and women?" he thought. There was essentially nothing in common between his old girlfriend Niemira, his twin sisters and his mother. "Yet here I am, having erection left and right. And for my own sisters and mother! What the fuck is wrong with me?"

He listened to his mother's reassuring her, his overwhelmed mind not at all able to pick up her quivering voice, the fact that her body was now much warmer than it had been at first, nor even the fact that her pussy was slightly wet. He didn't feel any of that. All he could feel was his shame and confusion.

"Listen Dustin... Let's try to forget it. Maybe it will go down?"

"Sure..." he replied, knowing full well that leaving it to rub against a pussy meant that it wouldn't go down in a hundred years.

Sure enough, by the time they were done with the next song, his cock was still rubbing against his mother's pussy. In this angle, especially since she was slightly shorter than he was, there was no chance of an accidental penetration. Still it was intoxicating and Dustin could feel his embarrassment and disgrace being eroded by his lust. Very quickly. Part of his mind even realized, finally, that her mother's pussy was wet and that his cock was now sliding very smoothly against her lips.

When the next song turned out to be more upbeat, Dustin took a deep breath and decided to let himself have fun. He switched his grip on his mother's back, letting his hand slide much further down before grabbing her hand more strongly. And he began dancing more energetically. "If she's OK with my erection rubbing her pussy, then so be it!"

When Tessa felt her son's change of attitude and energy, she felt her heart reacting. Her heart and her pussy. She was already swimming in forbidden pleasure, her wet lips being endlessly caressed by her son's very nice cock. If anyone caught them doing this, there would be hell to pay. Yet, at least for a while, she abandoned herself to the moment and enjoyed the sensations. She pulled herself even closer to her son with her own hand on his back.

Once and while their movements made it so that his cock on her pussy would make a wet noise after pulling away and coming back. They both moaned when this happened, but they didn't look at each other. In fact, the way their heads were positioned, neither could look at the other. Unconsciously, it seemed that despite their pleasure, they knew something strange was happening.

About two songs of this later, Tessa knew that they had to stop. This was just too much. She felt on the verge of a climax and was pretty sure that her son's cock was now dripping with her juices. Also, they were barely dancing by now. Instead, they were pretty much dry humping each other, trying to maximize their pleasure without going any further. "Any further than they already had gone!" she thought, biting her lower lip.

As the next tune began, a very upbeat one, Tessa moaned one last time and pulled again. When her son's cock slipped directly against her clit she moaned and feared her legs would give way. Damn she was keyed up! She knew enough about herself and her sexuality to know that this was a very dangerous mood for her. In such a mood she had let her husband do things she would never have accepted otherwise. And now she wasn't with her husband, but with her son...

"Ok..." she groaned as she steadied herself. "Let's try another type of dance."

At first, when she taught him a classic fifties' type of rock and roll dance, her desire quieted down. But then she saw his glistening cock moving this way and that. When their eyes met after they had both looked at it, they laughed together. "Well... That won't work at the ball!" Tessa said. She went to the CD player and switched the tune to a slower one. "Come here. Let's try a slow dance."

Dustin was very surprised by that suggestion. And indeed, when they essentially hugged each other, his cock pushed straight up and trapped between their bellies this time, they both moaned. Having seen his mother dancing to that old rock and roll music, shaking and twirling, Dustin had finally understood the near fanatical admiration men had for those very curvy women in the fifties. The pin-ups. Briefly he imagined his mom in an old-style bikini washing an old Corvette. "Fuck!" he thought, feeling his cock surging.

And now, almost shamelessly, the two of them were caressing each other with their hands as they danced. And Dustin couldn't resist repeatedly pushing his cock up against his mother's soft belly. A few inches higher and he would touch her breasts! Damn it! His mother cleared her throat and said "Well, maybe this wasn't a good idea after all." This time he noticed her shaky voice and even her unstable balance as she walked to the CD player.

When the music began playing, rock and roll again, she told him that he had to learn to make her twirl. "Yeah... As if seeing your body twirling around and your breasts flying will help..." Dustin thought. But in the end, he didn't get to see that very often. Only once in fact.

His mother told him how to hold her hand and then the twirled away from him. At this point they were as far apart as they could be while still holding hands. "Ok." she said. "Now, let me do the work and just hold my hand as I come back to you." On the next beat she rotated twice as she closed the distance between them. She then was in his arms, but with her back to him. Her plan had been to move out again to repeat the series of steps. But sometimes the best laid plans...

What happened instead was that Dustin felt his cock nestling itself between her buttocks. And that was just too much. Reflexively, Dustin pulled away from her, hoping to disentangle himself completely. But his mother was holding onto his hand and was pulled backwards with him. They both lost balance and Dustin fell back on the sofa. And so did his mother. Right into his lap.
And, because such was the way this week was going, his cock fully penetrated his mother's drenched pussy. Is it an accidental penetration when both of them wanted it?

They both froze, breathing hard because of all that dancing, their mouths opened in shock. Dustin was too shocked to do or say anything, but noticed that his mother didn't move away. At all. For an entire minute. A minute of silence while your mother is impaled on your cock, not moving, feels like an eternity. Until, finally she did start moving.

Shock or no, Tessa knew she should pull away immediately. If she did, they could probably laugh it off and promise not to talk about it to anyone. But she didn't move. It had been more than two decades since she'd had any cock but her husbands in her pussy. And so this accident scratched that itch. Not only that, but it was her son's cock, the one she'd been fantasizing about since yesterday. "My sweet son's cock is inside me!" she kept thinking, repeating it in her mind as if on a broken record.

She should have gotten up immediately. Should and could have. She would learn later that Dustin was too shocked to move. She wasn't. Instead, she was in perfect control of her body. And she decided to remain sitting on that fantastic cock. For a long time. Tessa couldn't turn around and look at her son. Couldn't think of anything to say either. A mother couldn't say "Wanna fuck?" to her son. Then again, she remained there, feeling his cock pulsing inside her.

Instead she did the only thing she could: she rose up. But only so far as to keep the tip of his cock inside her. And then she lowered herself back down. And then up again, then down. In silence, without even looking at her son, she began fucking him. If that initial penetration had been an accident, and if that first minute could have been attributed to shock, nothing could explain away the fact that she was now riding his cock.

They were fucking slowly in utter silence, as if not saying anything was making things right, somehow. In fact, the only thing breaking the silence were the soft, squishy sounds of his cock moving in and out of her pussy. It was utterly surreal. When she felt his hands on her ass and finally heard him moaning "Oh, mom...", Tessa closed her eyes and felt her pleasure being ratcheted up a notch. She was soon overwhelmed by the raw sensations and the sheer fact that she was fucking her son.

Her thighs were opened wide around his and both her hands were on his knees, giving her leverage. And so she banished all thoughts of impropriety, of forbidden incest, of utter craziness and simply fucked her own son. "Gods his cock is wonderful!" she thought. "No wonder Niemira was always walking around with a grin on her face! It's not huge, just... just perfect!" Tessa remembered that she was echoing her own daughter's words about Dustin's cock and laughed. Laughed as she fucked her own son.

Dustin, staring at his mother's large and perfectly rounded ass moving up and down on his cock, was on the verge of laughing as well. It was just impossible, accidentally fucking one pussy after another like this. One for every day except that first day. Impossible and insane. And yet here he was, fucking the most voluptuous woman he had ever see in his life. His mom.

He was already mesmerized by the curves of her waist, hips, thighs and ass while she had her legs opened across his. Without a single word being spoken, she managed to let him know how to move. Second later he was the one with his legs opened and she had closed her between his. When this was done, his jaw dropped as this new position had three very powerful yet very distinct effects.

The first was deeper penetrations. Even though his mom had been letting her entire weight drive her penetrations, her generous ass had prevented his cock from going as deep as it could have. But with his thighs out of the way, he felt his mother drive down at least an inch lower. That meant that the tip of his cock pushed deeper inside and he felt the walls of her pussy stretching around him.

The second effect was that it allowed his mother to quicken her pace. Her hands were still brace on his knees, but the new position gave allowed her to control her movements a lot more. And so in addition to the wet sounds of his cock fucking her pussy, there was now they rising rhythm of her ass slapping his lower belly. The situation had already been amazing, and now it was going into overdrive!

And the third effect was the way her ass now looked. By clamping her thighs together, Dustin's mom had involuntarily positioned herself in the most flattering way imaginable. Flattering and sexy. If he had begun to understand why those pin-ups from the fifties drove so many men wild, everything seemed to click in his mind.

From then on his hand went back and forth between holding her and caressing her, sliding down those rounded thighs and back up to that small waist and down again to squeeze those two big buttocks. Dustin didn't know how long they remained this way. But eventually his mom stood up, turned around and straddled his lap. A second later she had impaled herself one more time and immediately began grinding her pussy against him.

They both shared a glance, but his instincts quickly took over and he leaned forward to take the offered breasts. And it was a revelation just as momentous as seeing her ass earlier. Dustin feasted on his mom's breasts with more intensity than he had probably done as a baby. He grabbed the heavy breasts with his hands, lifted them up and brought those mouthwatering nipples to his mouth.

Dustin could barely believe how big her mom's breasts were. He had seen a few nude models with what looked like bigger breasts online, but still, not a lot! He became convinced that his mom could have made a lot of cash as a nude model when she was younger. But he forgot about that thought and tried to satiated his need for those mammoth breasts.

So focused was he on those breasts that his climax took him by surprise. In shock, he threw his head back against the couch and his mouth opened wide. He felt his mother increasing her tempo again as waves of pleasure shook him. He didn't even think about asking her to pull away and felt his sperm filling her pussy like consecutive explosions. He heard his mother beginning to laugh and gasp. Opening his eyes, he saw her face contorted by pleasure as she climaxed as well. She was pounding him into the sofa and soon buried her face into his shoulder as she came and came.

Eventually Tessa collapsed on him, afraid that she would faint from all that pleasure. Sex with her husband was still very nice, but this was utterly different! She let herself fall sideways to the sofa. Her son's cock made a loud and wet plopping sound as it slipped out of her and they both laughed. In this post-coital bliss, they smiled at each other and remained that way for a few minutes. After that, Tessa reached for his cock, pretty much completely soft now, and said "See? I knew we would find a way for you to control it!"

"Wanna bet?"

Tessa was surprised about her son's comment. She was even more surprised when he stood up and invited her to dance. She realized that she had forgotten what it meant to have a 20 year old lover. Within a minute his erection was back and she knew she was in for another round. This time, when his erection pressed on her pussy, she purred like a cat and hugged him harder. She knew she wanted it inside her again, but there was a gift he wanted to bestow upon him first.

Slowly, languorously, she lowered herself until she sat on her feet and ended up face to face with his very hard cock. Grabbing it by its base, she pulled it down, opened her mouth and took him in. The sudden feel and taste of her son's cock inside her mouth reignited the flames of her pleasure almost instantly. After a minute, she had licked, sucked and swallowed whatever traces of her juices had remained, and from then on, it was nothing but Dustin. The taste of Dustin's cock.

Even though she could see that her blowjob was having its intended effect on her son, that wasn't quite the gift she had in mind. She rose up on her knees and, after spitting a large wad of saliva on his cock, wrapped her breasts around his shaft. Looking up, she said "I bet you've never experienced this..."

Dustin could only shake his head as he stared, unbelieving, at the tip of his cock appearing above her breasts. And then disappearing, only to reappear again. As wonderful as her pussy and mouth had been, this was something else entirely. He had seen countless of videos of big breasted girls doing this online, but had never lived it before. Hayden, and now his older sister, could have done it, but it just didn't happen.

Dustin gasped and shook as he fucked his mother's breasts, unable to believe that regular kin could feel about as good as a pussy! Pussies had evolved for millions of years to be as pleasurable as they could for a man's cock. Breasts had evolved for an entirely different reason. And yet... "Christ in heaven!" He couldn't believe just how incredible it felt!

If he hadn't just climaxed, Dustin probably wouldn't have last more than two minutes. But since he just had, as well as having had sex twice in the two previous days, he was able to enjoy this unique pleasure for a long while. He knew he could control himself and stay like this for hours. But as the minutes flew by, he also knew he wanted to fuck his mom again.

And so he grabbed her shoulders and pulled away from those miraculous breasts. Once she was standing up, he pushed her until she fell on the bed on her back. As she was giggling, he jumped on her, slipped between her thighs and found her pussy again. And so Dustin began fucking his mom again.

This time, even though they weren't talking anymore than the first time, things were different. Neither of them found themselves in this singular desire and self-reproach tension that had characterized the minutes following their first accidental penetration. Oh no. Instead, they were kissing passionately like mother and son never should. But they were. They were kissing madly.

Their climaxes rose pretty much at the same time once again and they held on to each other as if their lives depended on it. It was a wonderful experience for Dustin, where his love for his mother mixed nicely with the lust he had finally released. About ten minutes later, each of them on their backs in bed, his mom grabbed his hand. "So, about the ball..." and they both laughed. "But seriously. I have found the perfect solution. Fifteen minutes before it starts, come to my room and I'll let you fuck my breasts again."

"Just fifteen minutes?" he replied, a naughty gleam in his eyes.

As Tessa watched her songet up to take a shower, she smiled. She was remembering something that had happened so many years ago. It was in her nude modelling days. Thankfully, that was in a pre-internet world and none of her images had ever popped up on the net. Not even her husband knew about them. But once, after she had agreed to let a male partner touch her pussy with his cock, things had taken a surprising turn...

***

Much later that night, after having taken up on his mom's titfucking offer, Dustin walked in the main hall where the ball was held. On his arm was his younger sister Lily. And as they walked under the fake trees with their garish flowers, she leaned towards him and whispered "Emily has told me a very surprising story, big brother..." Dustin froze for a moment, but took a long breath and kept walking. This... this complicated things. But then again, as he looked at her grin, he wondered if it was not an opportunity.

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P.S. If you also have ideas for accidental penetrations scenarios, let me know by sending me a feedback email using this site's system! (And not the public comments.) I have many more ideas for such rather short and lighthearted stories. Do you want more of this kind of playful accidental penetrations stories? If so, let me know in the comments. Thanks!