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!

*****

Dustin was startled for a brief moment when he woke up the following morning. His sister Emily was lying in his arms, as naked as he was himself. And they had spent part of night having wild passionate sex. His involuntary startle woke her up and she opened her startling blue eyes to look at him. And smiled. He hadn't been sure about how she would feel this morning, but clearly she didn't have any regrets.

They were all smiles as they busied themselves with the morning routine. It was strange how simple that was in a nudist colony: a shower and a comb was pretty much all that was needed. Many times, the two of them stared at each other and grinned like children. But they weren't children and what they had done together last night was profoundly immoral. When Emily kissed him on the cheek before leaving the room to join the rest of the family, Dustin grabbed her arms and kissed her lips.

After that kiss stretched and stretched, Emily said "I'm glad you did that... I didn't know what you thought, or what you felt about us, about me..." The morning sun was now on her face, and her eyes shone like blue flames. Strange how he had never noticed that about her, those magnificent eyes.

"Oh, Emily..." he whispered. "I couldn't put into words everything I feel about you, but one thing is clear: all of it is good. Great even. Even if you told me it would never happen again, I'd cherish that accidental night with you for the rest of my life."

Her answering smile was brighter than the sun for Dustin. "It will be our little secret." she said before kissing him again on the lips. "And about it happening again, we never know..."

She kissed him one last time and walked out of the room. Given that the long kiss had also awoken his erection, Dustin decided to remain in the room for a bit. He let himself fall on his bed and tried to order his thoughts about that accidental penetration and the very un-accidental sex that had followed. Part of him knew he should be feeling ashamed and dirty. Fucking your own sister? But instead of feeling shame, he was grinning at the thought of seeing her climax around his cock, her mouth open and her hands over it to stifle her screams of pleasure!

But Dustin shook his head: such memories wouldn't help him fight down his erection! Instead he focused on the idea of incest itself. It was morally reprehensible in just about all cultures of the world, his own included. Of course he had long admired his sisters' bodies: the twins, Erica and even his voluptuous mother had all fuelled his fantasies. Yet he had never thought that he'd actually do anything about it. And now he had. Accidentally at first, and then willfully.

He had fucked his sister! Christ! And he couldn't tell anybody about it, obviously! Even when he gets back home in a week or so, he'll have to modify that story before he could share it with his closest friends. Dustin had a pretty good idea how even his closest friend would react if he told him he had fucked his sister! He slowly shook his head on the bed, sighing. Even if he had to take this secret to the grave, he wouldn't mind. And to think that Emily hadn't been closed at the thought of repeating the experience... Shit! Maybe tonight?

Dustin stood up and tried to rid his mind of all the memories that flooded it. Thinking about the sight and the feeling of your sister's lips around the base of your cock, for example, wasn't conducive to ridding yourself of an erection! He stretched and did push-ups and sit-ups until, eventually, his erection was completely gone. Taking a few deep breaths, he went out and found his family, completely naked of course, sitting at a table in the dining room. Emily winked at him surreptitiously as he sat down.

The rest of the morning, most of it spent outside in the sun, was uneventful. Uneventful, of course, only as much as a nudist colony can be uneventful Though the vast majority of women and girls that were not beautiful or sexy, Dustin was pummelled by countless images he'd love to photograph: two sexy girls throwing a frisbee, their large breasts swinging in time with their throws; three others, a redhead, a brunette and a blonde, with high ponytails jogging in the morning sun; a stunning black girl walking out of the lake, her body glistening with dripping water, her arms raised above her head to twist her long hair into a tight bun; three young girls dancing around a fire; one blonde girl with an amazing ass kneeling suggestively on the beach as she helped her younger brother building a sand castle.

Sitting on an Adirondack chair wearing nothing but his sunglasses, Dustin was enjoying those many sights and thinking that life was good. His night with Emily kept popping up in his mind, but given the very public setting, he pushed those memories away. Out of nowhere his older sister Erica appeared in front of him. As she knelt, she looked at him and asked "Enjoying the view little brother?"

"What if I am?" he replied, remembering that she had teased him like this last year as well. He didn't mind, as she wasn't doing it to mock him.

"Don't worry, I'll get out of your way quickly enough... I wanted—"

"No hurry, sis..." he replied.

Erica narrowed her eyes, trying to see where he was looking. "Mischievous pervert!" she said in a whisper, but was smiling. "Looking at your sister like that!"

Dustin was grinning, enjoying this little game. "Well, if you're going to kneel in front of me like this..."

When Erica paused to look at him a moment, Dustin wondered if he had gone too far. He had never dared to say such things last year. She had had full control of her teasing. Not this year though. Not after Emily. Even if he didn't know how she would react, Dustin was more confident and intended to see where it would lead. After a moment, Erica stood up in front of him. It made her look even more beautiful, placed even more of her body in obvious display. Dustin didn't know if she had done it on purpose or not. "In any case, I wanted to know if you'd like to do the pancakes with me for lunch."

"Pancakes for lunch? Sure!"

"Great. Meet me at noon in our parent's room." The suite their parents had chosen for them had a private kitchen and they had taken to eat there instead of the common room.

Before Erica left, she turned around and stood in front of him for a few seconds, seemingly looking for something. Her ass was about two feet away from his face. Had she done this on purpose? To show him her lovely round ass? Nah... Impossible! But when she finally left, she shot him a glance that confirmed that she had, indeed, been teasing him. "Oh the little devil!" Dustin thought.

A few hours later the two of them met again in the kitchen. As they stood on either side of the small island, Dustin had to admit that there was something very sexy about cooking in the nude. Even at a nudist colony, even if his brain was slowly adjusting to seeing so many nude girls and women. And as he began preparing the sweet meal with his sister, Dustin couldn't help stealing glances at his sister's body.

If the twins, beautiful as they were, hadn't received any of their mother's lavishly buxom body, Erica had certainly gotten most of it. She wasn't, at 23, quite as voluptuous, but it seemed that she was getting closer every year. She stood at about 5'3", which wasn't that tall even for a girl, but the rest of her body more than made up for it.

Her breasts were really big, at least D cups, and they were really round and thrust forward almost impossibly far. On the net Dustin had of course seen plenty of nude girls with big breasts. But most of those big breasts, at least the natural ones, were simply wide and didn't reach so far from her torso like Erica's.

Add to that the fact that Erica's nipples, in addition to being proportionally large, were quite pointy. That meant that the tips of those nipples, even when they were not hard, stood many inches in front of the rest of her body. And they danced! Oh how they danced! Even with a bra, Dustin had noticed how Erica's breasts moved a lot. As if they were naturally bouncy. But naked as they were now, and with Erica slightly bent forward over the counter, those nipples danced like intoxicated faeries!

But Erica's breasts were not her only asset. She had a small and very high waist reminiscent of pin-up girls of the fifties. Low cut jeans didn't suit her well, but more classically feminine clothes worked wonderfully. That small waist and smooth belly led to her pussy and its long strip of hair. Less than two inches wide, that strip of light brown hair stopped right above her lips and was the only hair Erica had below her head.

And those fleshy lips vanished between a pair of rounded thighs. Gold because of her tan, her legs were the most feminine pair of legs Dustin had ever seen. And when she turned around to get something from the fridge, Dustin was graced with her soft and generous ass. Erica had a large bubble ass that seem to defy gravity. And yet it worked. It worked very well in fact. When she walked—

Breaking into his reverie, Erica suddenly said "You know you don't have your sunglasses on, little brother..."

Dustin realized that he had the bowl of chocolate cream in his hands but he had stopped whipping it up a while ago. "Oh. I'm sorry sis... I was... I was..."

"You were staring at me like a damned perv!" she said, smiling and shaking her head. Dustin didn't know what to say. After a brief silence, Erica added "I don't mind Dustin... It seems strange to me to ask men not to look at women at a nudist colony. Kind'a hypocritical in fact."

"I agree!" he replied his predictable answer. "Just... Well, just don't tell Alexis about it, ok?"

"Tell him what?" she asked. "Tell my boyfriend that my little perv of a brother spent the entire week ogling my breasts and my ass?"

"And your pussy as well!" Dustin replied playfully. "Don't forget to tell him that!"

Erica laughed at his comment. "Don't worry Dustin. He didn't want to come here with us, and I have a feeling it's because he knew he would have an erection 24/7!"

"Well, it is a challenge!" Dustin replied.

"Really? If that's the case, you're doing very well little brother. What's your secret?"

"I don't know. Every time I feel one coming, I just force myself to look away and think of something utterly non-erotic."

"Hmmm." Erica said. "Interesting. Are you doing that right now?" she asked, a naughty smile on her lips.

tilting his head slightly, he took a long breath before answering her "Maybe..."

Erica winked at him. "Ok, bring that chocolate cream. Well, looks like it's still pretty much a syrup!"

He walked around to her side of the counter, highly aware of their closeness. And of the fact that he was, indeed, trying to fight an erection. As he was about to put it on the countertop she reached for it. The flour on his hands and his nervousness made him lose his grip and the entire bowl splashed on her. More specifically: on her breasts. Erica gasped when the cold mixture hit her skin, but then looked down and laughed. "Now I suppose you're going to tell me that you didn't do that on purpose?"

Dustin would have liked to reply, but the sight of his sister's sumptuous breasts covered by and dripping with chocolate syrup froze him silent. The sight was impossibly erotic. All he managed to do was tear his eyes away. Erica was still laughing. "Help me find some paper towels," she said.

"There are none!" he said after a few seconds.

"Well then... there's only one thing to do!" his sister said.

Erica then rubbed one of her fingers against her massive breast and licked the chocolate off of it. "Hmmm... Talk about a happy accident!" Dustin was staring at her, his eyes darting from her slowly dripping breasts and the smudge of chocolate that was now on her lips. He then closely followed her finger the second time she rubbed it against her breasts and swallowed. If the mere sight of the dripping chocolate had been arousing, seeing those massive breasts moving about as she rubbed them made it mindboggling.

Erica, after smacking her lips a second time, said "Well, don't just stand there, give me a hand!"

On reflex, Dustin took a step towards her. But he suddenly stopped when he realized that it would me that he would rub her breasts. "What?"

"I'm kidding! Damn it Dustin, get your head straight!" Erica said as she licked a third finger clean.

Dustin walked back to the other side of the island countertop to hide his erection. There was no way he could win the fight against it anymore. A minute later, Erica had pretty much finished. Her breasts were still covered with streaks of chocolate, but there wasn't much more she could do with her fingers. Looking down at herself, she said "Hmmm. Looks like I'm going to need a tongue to finish this... Wanna help?"

Dustin smiled but felt himself flushing bright red. "Stop teasing me Erica... You may be brown right now, but I'm pretty sure I'm red all over!"

She laughed again as she grabbed one of her breasts and brought it to her mouth, licking her nipple clean.

And that was too much. Dustin groaned and turned around, walking away and cursing. He didn't know what Erica would say about that, but he hadn't expected her to say "Dustin? Are you hard?" Fuck! He had completely forgotten about why he had remained very close to the countertop! And now she had seen his cock. His head fell and he remained standing with his back towards her. "Oh..." she said after seeing his reaction. "I'm sorry Dustin. I'm sorry for teasing you. There are towels in the bathroom. I'll be right back. But please don't go anywhere. I don't wanna leave you hanging like that. Oh... Fuck. Sorry. Maybe that wasn't the best choice of words...

Two minutes later she came back in the kitchen and walked up to him. "Hmmm. Still hard? Why don't you sit down?" she told him. "I'm sorry Dustin. I just enjoyed teasing you about it. I guess I was frustrated about Alexis not wanting to come here. And for the reasons he gave me. You seem to be navigating this world of beautiful girls just fine!"

"Yeah! You know the image of the duck? Looks calm and peaceful above water all the while working like crazy underwater? Well, that's me." Dustin sighed. "And can you just admit that being a young male in this nudist family is much harder than in Joe's?"

Erica laughed, thinking about the fact that Joe's mother and sister, the family renting the two rooms nearest to theirs were mightily ugly. "Oh I do agree Dustin. You're doomed to live your life surrounded by four amazingly beautiful women! And nude women for a week!" she paused. "Look. I'm sorry. I'll stop teasing you. Alright?"

Dustin took a few deep breaths. "You know what? Don't stop."

"Are you sure?" his sister asked, surprised.

"Yes. No. I mean, please stop teasing me willfully. But I'm also aware that I must learn to control myself. I still don't know why you like to do it, though."

Erica said "You don't know why? It's simple. I'm curious."

Dustin frowned, surprised by her answer, and surprised by the fact that Emily had pretty much told him the same thing. But before he could ask her about it, she looked at the clock and suddenly got up to hurriedly finish their lunch. "Come and help me! Erection or not! The rest of the gang will begin to worry and if they come here and see you with a hard-on, well..." And so they finished their pancakes, with Erica putting on an apron to cook them. Dustin sighed, realizing that seeing a very voluptuous women wearing nothing but an apron was extremely erotic! But he wisely didn't mention it.

Later that same day, while the rest of the family decided to go to the swimming race, Dustin and Erica found themselves alone again. They went to his room, which had a better TV, and settled in for a quiet evening. About thirty minutes later, as they both watched a sports game, Dustin noticed that she looked at his cock pretty often. That made him think about what she had said regarding being curious.

He found that surprising, given that Erica had had many boyfriends and was very active sexually. Even if didn't have explicit info about what that meant, she didn't make a secret of it. She had even taken up mom's role in educating the twins about sex life. What could she be curious about. The next time he caught her, he said "Well, looks like I'm not the only one getting an eyeful."

"Yeah well, I'm doing what you've been doing for the last few days," she replied flatly.

"I'm not complaining Erica. I just can't figure out what you could be curious about."

"You mean because I've been with many partners?" she asked.

"Yeah."

"Hmmm. I don't think I can tell you why," she said.

"Oh come on! Here we are both naked, you staring at my cock and me being unable to forget when you licked the chocolate from your own breasts!"

Erica laughed, but still didn't want to elaborate. Grabbing the remote during the game's break, Erica scanned the channels until the screen was filled with a couple making love. It wasn't a porn flick, just a softcore sex scene, but the girl's breasts filled the screen as she rode her partner in cowgirl. For reasons Dustin couldn't figure out, his sister dropped the remote on the bed and watched the scene unfold.

Sighing, Dustin said "What are you doing?"

"What? I'm just watching that movie. I like it," she replied, never taking her eyes off the screen.

"Bullshit! What's the title?"

"Er, I don't know.."

"What's up with you?" Dustin asked, reaching for the remote.

But Erica grabbed it first. Dustin stood up and tried to grab it again. To his surprise, Erica pushed it between her thigh and the sofa chair she was sitting in. She then crossed her arms and looked at him with a smile as the moans from the actress filled the room. "Think I'm not going to get it?" he asked her.

"You certainly won't, as that would mean grabbing my ass," she replied confidently.

But before she could even finish her sentence Dustin had reached down and slipped his hand around her round thigh, fishing for the remote. "What the..." she cried in surprise.

"Ah ha!" Dustin said as he pulled his hand out with the remote.

But Erica wasn't done. She stood up as well and reached for his hand. Dustin pulled his hand away and their bodies collided, her large breasts pressing against his chest for a second. That made him pause for a moment: Dustin had never touched breasts as big as his sister's. Sadly for him, Erica used his moment of disorientation to grab the remote. Laughing now but determined to get it back, Dustin reached for it with both his hands.

Soon the two of them were wrestling like they hadn't done for a decade. The fact that Erica's breasts, ass and pussy were pressed or ground against Dustin's body didn't seem to matter for either of them. No more than the fact that his lengthening cock was slapping against her own body in return. They were both laughing, but neither of them was willing to let the other one win.

At one point they fell on the bed and soon rolled to the ground. When Dustin found himself between his sisters legs in what was pretty much the missionary position, he finally realized that this was dangerous. But once again Erica took advantage of his hesitation and turned him over. Pretty much in cowgirl now. Dustin, throwing caution to the wind, lifted his hips and pushed her above his head.
Erica ended up half on the bed, but she twisted and jumped back on him. By this time they were both flushed and giggling through the game. Finally, half sitting on his belly, Erica managed to pin his arms above his head with one hand and began ticking his armpit. Dustin, too stunned to give their wrestling match all he had, laughed and dropped the remote. But in that moment he stopped keeping his body twisted so that his cock was pointing away from his sister.

When Erica, the remote proudly in her hand, sat back down on him, Dustin felt his cock impaling her completely. So for the second time in two days his cock had accidentally penetrated one of his sister's pussies. Erica then cried out a peculiar moan of mixed pleasure and pain. And contrary to what Emily had done last night, Erica jumped off and away from him a second later. Standing above him, she looked down at his cock, all glistening with her juices. She had her hand on her mouth and looked horrified. Which was, understandably, a very natural reaction for a sister after being impaled by her brother's cock.

Reflexively she turned the tv off, the sound of the moans suddenly totally inappropriate. She looked back into Dustin's eyes, breathing hard and looking like a deer caught in headlights. "Erica, I'm sorry... I shouldn't have let you do that, I should have stopped you once I became..."

"Why were you hard?" she asked, her voice barely a whisper.

"Are you serious?" Faced with her silence, Dustin added, slowly, "Well... I know you were curious, but I think you have a pretty good idea why..."

Erica looked at him as if she didn't understand a single word. Instead, her eyes were focused on his cock as if she had never seen one before. "What... What do we do now..."

Dustin, still on his back on the floor and still with a raging erection, was shocked to see that she was still breathing hard and still flushed. He'd had enough experience to know that it wasn't a flush from shame. It was lust. He took a risk and asked "Why were you wet?" Because she had been. A lot.

"Fuck!" she said, finally tearing her eyes from his cock to look at him. "Because you have a fucking perfect cock! Perfect length, perfect girth, nice shape, perfectly straight... Christ!" she tried to regain control of her breathing, but failed. Haltingly, she added "In fact, when I saw your cock hard earlier, it reminded me of my favorite dildo. Shit!" she said before coughing nervously. "I don't know why I'm telling you this."

The siblings stared at each other for a long moment, with Erica standing right above his cock. After a long moment, Dustin said "Where's the remote?"

Erica was startled by this question. She nonetheless frowned and grabbed it from the bed. "Here."

"Give it to me," breathing just as fast as his sister was, he grabbed it and placed both his hands above his head on the floor. Just like earlier.

The two of them stared at each other again for a long minute. Dustin's cock was twitching, overfilled with blood. He was totally unsure of what Erica would actually do until, finally, she took a deep breath and released it in one go as she jumped on him. In silence now, they feigned to wrestle again and soon Erica grabbed the remote. Saying a fake victory "Yes!" in a whisper, she then sat back once again and impaled herself on her brother's cock for a second time.

This time though, she sat back up and let her entire weight rest on him, pushing his cock even deeper than the first time. The siblings both moaned at the same time and Erica repeated her "Yes!" After closing her eyes, she opened her mouth and simply remained there, enjoying her brother's cock. Soon she placed her hand on her head before grabbing a fistful of her her hair on each side.

Beneath her, Dustin was just as transfixed by the wonderful pussy around his cock, by her breasts offered on a silver platter and on the notion that he was fucking a second sister. He sat up and gathered his legs beneath her. He then wrapped his arms around her and pushed her backwards before diving for her breasts. When he felt his older sister's nipple in his mouth, Dustin shook as he feasted.

He kissed and sucked on it before licking his way all over his sister's breast. Soon he jumped to the other and he repeated the process. Through all of this they were both silent but he could feel her pussy spasming repeatedly around his cock. After a while he pulled back and stared at the breasts he had been fantasizing about most of his life. They were glistening with his saliva and the two aureolas were engorged with blood, their nipples projecting outwards enormously.

Laughing crazily, Dustin then plunged his head between them and felt Erica pushing her breasts around his face. He was out of breath, completely flushed and grinning like a fool when he pulled back out. "You have no idea how long I've been wanting to do that!"

"Oh, I think I do!" Erica replied, laughing with him. "You and every other guy on the planet! But now it's my turn to have fun!"

With that she pushed him back down, shifted her knees on the floor and began riding him like a bucking bronco. If he had taken Emily pretty roughly yesterday, pounding into her from behind, he was now on the receiving end of intense lust. At first he had placed his hands on his sister's hips, but soon he realized that Erica was in control. He placed his hands under his head and stared, in awe, at her body as it rode his.

Her large breasts, being rocked around wildly by her relentless rhythm, drew his eyes at first. Obviously. Her large pink aureolas, all puckered because of her arousal, threatened to hypnotize him. Soon though, his eyes left those large orbs of sweet flesh and looked lower to her rounded thighs. And soft, feminine belly. And that welcoming pussy, stretched as it was around his shaft.

As he focused on controlling his own pleasure, he saw and heard Erica's excitement growing. Like her younger sister, Erica seemed to really like this cowgirl position and soon enough Dustin saw that she was on the verge of a climax. "You're so fucking beautiful!" he whispered. Erica moaned at his words, laughed breathlessly and, twenty seconds later, exploded in pleasure.

Dustin had never seen a girl climax for so long before. Not even fake orgasms in porn movies. He didn't know if she was having multiple orgasms or was simply sustaining a single one for very long. Eventually, either because the climax was fading or because her body was exhausted, she slowed down, sweat dripping from her chin and both nipples.

As he caressed her thighs, arms, belly, breasts and face, Dustin felt that she was covered in sweat. To his surprise, she didn't really stop riding him. Instead, she just slowed down a lot. As she was gathering herself and quieting her breathing down, she opened her eyes and laughed. "That, sweet sister, was extraordinary!" he said.

"Thanks!"

"But... Can you now tell me why my cock was so... well, was such a..." his words trailed off.

"An aphrodisiac?" she supplied.

"Yes."

"Well, I've been with four guys before you. Before my brother!" she cried, shaking her head in disbelief. "And would you believe that they all had strange cocks?"

"Strange cocks?"

"Yeah... The first one was crooked to the point that it could barely fit inside me. The second one had a disproportionately huge bulbous head that was rather painful. The third was probably the most normal, but the guy was a precocious ejaculator. And finally, the fourth, Alexis..." Erica paused and looked at him with a serious expression on her face. "Swear to me you're never going to repeat this."

"I swear!"

"Alexis... Oh. I love him a lot. But..."

"Strange cock? What's wrong with it?" Dustin said, trying his best to follow this strange conversation as his sister's pussy was still writhing around his cock.

"Oh, it is straight, nicely proportioned with a beautiful head. But it's only four inches long when fully erect... Which explains why he didn't want to come here." She paused and sighed. "And so last year when I saw your cock, erect once or twice... Well, I was pissed. The only guy that I couldn't... well that I couldn't fuck had a perfect cock."

"And then you found a way to fuck me, all the while making me believe that it was an accident."

Erica was stunned by Dustin's words, but before she could do anything about it, he rolled her off of him and guided her to a new position. She was on her knees, her upper body on the bed and Dustin was kneeling behind her. Even though his big sister's ass hadn't fuelled his fantasies as much as her breasts, he now realized just how wonderful it was. Using his thick cock, he playfully slapped each of those round cheeks a few times, watching her flesh bounce.

Dustin then spat a gob of saliva on his cock and said "Get ready to be fucked again by your brother's perfect cock!" Erica began to say something, but it turned into a groan when he pushed himself in. Seeing those round buttocks pressed against his upper thighs and his cock buried into her pussy made his head spin. His appreciation for curvy, nicely rounded ass increased significantly during his first time with Erica.

As he pounded into her, watching that upturned ass meeting his thrusts, he abandoned himself and gave her all he had. Given that Erica was only moaning louder and louder despite the fact that she had bit into a huge fold of the duvet, Dustin kept driving himself harder and harder. He couldn't believe just how hard he was fucking her and how wild it was making her. After gasping in pleasure and because he needed so much air to sustain his rhythm, he felt his balls contracting. "Can I..."

"Yes! Don't pull out!" she replied, cutting him off.

If yesterday night had been his first time inside one of his sister, this night would mark the first time he had cum inside another of his sisters. It was utterly surreal, but all he could think about right now was his intense climax. He came so much that sensations of his cock rubbing inside her pussy changed! He was holding on to those lovely rounded hips of hers as he pushed and bucked against her, filling her with his incestuous sperm.

Eventually Dustin pulled back and fell against the other bed, his heart pounding as quickly as he had pounded Erica's pussy. She soon jumped on the bed next to him and hugged him hard. The two of them spoke for a while before getting up and taking a shower together. The last thing they did before parting was laughing about not having been caught, which had certainly been a possibility.

***

Little did they know that, in fact, they had been caught. By their mother. When Erica fell on Dustin's cock for the first time, she had heard her strange scream. She opened the door between their room and saw her daughter sitting on her son's cock. It froze her in her tracks. Her two children, in any other situation, would have seen the door open with her standing there. But they were both too shocked to notice.

And so Tessa had partially closed the door but had remained, fascinated and appalled by what she was seeing. When, less than a minute later she saw her daughter mount her own brother again, she had stood there, unable to tear her eyes away. And soon her consternation had given way to utterly improper pleasure, and by the time Dustin was taking her daughter's pussy from behind, Tessa had climaxed all over her hand.

As she was walking back out to rejoin the others, she felt like an entirely new world had just opened up to her. It wasn't right for a mother to think about her son's beautiful cock in that way, right? Right? But that decision will have to wait for another story.

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P.S. 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. If you also have ideas for accidental penetrations scenarios, let me know by sending me an email! Thanks!