Warning: This fic is something really, really weird. Probably abuse in real life so turn back now if you feel you'll be offended. Also, take note that even I find this really weird, and a bit uncomfortable to write. It's fiction and should stay that way.

Practical Sex Education

It was late in the evening and Boruto woke up from the feeling of needing to pee. He got up from his bed and out his room. The bathroom was down the end of the hallway, and he walked towards it. When he was getting close, he happened to hear sounds from his parents' bedroom. The light was on.

Curious, he moved closer to their bedroom door, and he began to hear moaning sounds. It sounded like his mom. 'What's happening?' he thought. He held the doorknob and twisted it slowly. It was unlocked. When he finally turned it enough, he slowly pushed the door open just enough to give him a view.

What he saw surprised him. His dad was on top of his mom, both of them naked and he seemed to be moving his hips back and forth. He focused on what was happening and it looked like his penis was rubbing on his mom's vagina. While he wasn't surprised of the nakedness of his mom and dad since they were a nudist family, and even Boruto was also naked at that moment, he has never seen his dad and mom doing something like that before. He wanted to know more about what they were doing but he was afraid he was watching something he shouldn't and that if he interrupted them to ask, he might get scolded. So he tried to open the door a bit more so he could see better. He continued to watch them but he became too focused on watching that he subconsciously pushed the door further to see even better but it was too much and he ended up opening it almost all the way, making a loud noise as he failed to catch his balance and landed on his hands and knees with a loud thud, heard by the two people he was watching.

The sound made both his parents turn to look at the direction of the door and to their shock they saw their son on the ground.

"B-Boruto!" his mom, Hinata, called out his name in surprise. It took both of them a few seconds to realize that their son was right in front of them, looking at them as they were joined at their hips. Both of their hearts pounded when they realized that they were both caught having sex by their son and couldn't think of anything to do as to how to explain the situation they were in.

"Uhm, I'm sorry. I didn't mean to look." Boruto said as he looked up, his parents still in the position he was watching them in. "I'll uhm, I'll be going back…" he said as he tried to run out of the bedroom until he heard his dad call out his name to stop him.

"Boruto, wait!" Naruto, his dad, called out firmly. The tone of his voice sent shivers down his spine and froze him on the spot.

'Oh no. I am so dead.' Boruto thought to himself.

"Boruto, how long have you been watching us?" Naruto asked, but not like how he expected, it was with a calm voice. Still, he was afraid to answer as he felt he just did something very wrong.

"Come on Boruto. We're not gonna be mad at you. Just tell us." his mom said this time.

Boruto turned around, seeing that his dad has moved back from his mom and was sat on the bed. His mom was also sitting up.

"I uhm, for quite a while. I was supposed to go to the bathroom but then I heard your voices from the room and I got curious. The door was unlocked so I thought to take a look."

"And you saw what we were doing?" Hinata clarified.

"Uhm, yeah."

"How much did you see?"

"Well, dad was pushing his penis inside you mom, back and forth." he told them.

"Do you know what your dad and I were doing?"

"No." he answered, honestly. He's never seen his parents doing something like that before.

"Well, since you've already seen us do it, then we should at least tell him about it, right honey?" Naruto asked his wife.

"I suppose. He is at that age after all. He'll find out sooner or later. Better it comes from us than others." Hinata agreed.

"Okay then Boruto." Naruto said, looking back to his son. "It's gonna be a bit weird but you have seen us do it after all. I suppose there's no point in trying to cover it up and keep you from wondering. So, your mom and I are going to teach about sex."

"Sex?" the boy innocently asked.

"It's basically the term used to call what we were doing. But since you still don't have an idea what we were actually doing, then we'll have to break it down for you. So come a bit closer here so you can understand better."

Boruto was a bit reluctant. He didn't know why he was afraid. His parents were just going to teach him about something. But he summoned up the courage and walked towards his parents. There was a chair near the bed and Naruto got up and got it so that Boruto would have something to sit on.

"This might take a while, but this is something you'll learn sooner or later. So let me ask you Boruto, do you know how babies are made?"

"Uhm, the dad and mom get married and then the mom gets pregnant then you wait for a year and then you get a baby." he answered to the full extent of what he knew. Hinata chuckled at the answer, reminded of how she too when younger thought about it in a similar way.

"It's a bit close to that but there are missing parts." she pointed out. "You see, it's not enough to get married and then the mom gets pregnant. Don't you wonder why you never got another sibling after Himawari?"

"Yeah, I suppose."

"Apart from being married, the mom and dad have to do something and that something is sex, like what we were doing."

"So does it mean we're gonna have a new brother, or sister?"

"Not exactly." Naruto answered. "For mom to get pregnant, something else needs to happen during sex and since your mom and I don't have plans on having another baby, then we do something so mom doesn't get pregnant."

"But how does mom get pregnant anyway?"

"About that, you said you saw that I had my penis inside your mom earlier, didn't you?"

"Yeah."

"It's one of the steps needed. But first we have to tell you more about the penis and the vagina. You see, the male and female genitals aren't just for peeing. Their other function is for having a baby."

"Really? No way."

"Yes way, Boruto. I'll try to put it simply for now, you can ask about it more some other time but basically, the dad has something inside him called a 'sperm'. It's a very small cell. You know what a cell is right?"

"Yeah, they taught about it to us in school. They said we're made up of trillions of them, but you can't see them."

"That's true. So, there's this special cell from the dad, and it comes from the testicles." Naruto said as he held his balls. "It then travels through the penis and comes out of it, same as where the pee comes out. It's a white, slimy substance and it has to reach inside the mom's vagina where another cell, called the 'egg' will be waiting for it. When the two cells meet, then that will start the pregnancy and it will slowly turn into a baby. Do you get that?"

"A bit. So uhm, that's why you have your penis inside mom?"

"Yeah, that's part of it." Naruto confirmed.

"Why don't I show Boruto a bit about the female part so he can understand better."

"Yeah, go ahead honey. I leave the female stuff to you."

"Boruto, there's a reason why males and females have different genitals and why only females get pregnant. Only males have the sperm and only females have the egg. And then this 'egg' is deep inside my vagina. That's why dad's penis has to get inside so that he can reach the egg better. You haven't seen what a vagina looks like up close haven't you? I'll show you so you can better understand."

"Okay."

Hinata spread her legs to expose her vulva. Being nudists, it was something that Boruto has seen hundreds of times. As far as he knew, there was a slit there and that was where the girls' pee came out of. Boruto looked at it as his mom told him to do and what he saw after a few seconds surprised him. His mom placed her fingers on the sides of the slit and spread it open, showing a big hole inside the slit.

"This is the vagina, Boruto. This is where dad puts his penis inside during sex."

"Wow! I didn't know there was something like that in there. So that's where your pee comes out of too?"

Hinata chuckled at the innocent question of her son. After all, it was a common mistake to think of it like that.

"No. The vagina is not for peeing. For that we have a urethra which is a small opening on top of it." she informed him, pointing out the small hole. "And as for the vagina, aside from being where the penis comes in, it's also where the baby comes out."

"Huh? The baby?!" Boruto was shocked. "But how does the baby come out from there? It's too small."

"The opening gets big for childbirth. That's how it is. You and Himawari both came out of this when I had you."

"O-kay. That's a bit weird."

"That's just how it is."

"I see. So anyway, why were you putting your penis in and out over and over again? And does this mean we're gonna have little brother, or sister? Since you were doing it."

"No sweetie." Hinata told him. "You see, even if we have sex and dad gives me the sperm, I won't get pregnant because I'm taking medicine that prevents me from being pregnant."

"Oh. Then why were you having sex then?"

"Good question son." Naruto said, putting his hand on top of Boruto's head and tousling his hair. "To put it simply, while sex is technically what you do to make babies, it also has another purpose. Couples have sex because it feels good."

"It feels good?"

"Yes. You might not know yet, but the genitals when they're touched or rubbed gives you a good feeling and that's why people have sex aside from trying to get pregnant."

"And also, it's one way to show affection to the person you love. It makes you feel more connected. You're probably too young to understand these side of things Boruto but you'll understand when you get older."

"So, you wanna see up close how we do it?" Naruto offered. He looked at his wife to see if she would object but she seemed to be okay with the idea. After all, their son has seen them and they've talked about it this much. Further demonstration wasn't going to be too much from what they've already told him.

"Okay." Boruto nodded. He honestly couldn't make out much of what they were doing earlier from that distance and he was still wondering how the penis goes inside the vagina.

"So when having sex the couple needs to be aroused at first. Think of it as something to ready yourself for it. As you can see, you can't put the penis inside the vagina if it's soft." Naruto said, holding his limp dick and showing it to Boruto. "This is usually how the penis looks like right? But when aroused it can grow bigger, longer and become stiff so that it won't bend when you try to put it inside."

"How do you get it like that?"

"A lot of things. I can think about sex or think about your mom's body. It's like the penis has that reaction to thoughts about doing it so it prepares itself. You probably won't find the naked body to be arousing since you've been raised as a nudist but we'll talk more about it next time. The other way is to just touch it. It reacts to being touched or rubbed and in a few seconds or a minute, it should naturally respond."

"And not only for the males." Hinata joined in. "Us females also get aroused to get ready for sex. Since the penis will be going inside us, the vagina needs to be ready as well. When we get aroused, the inside gets slippery so the penis can move in and out without problem."

"Why don't we show Boruto how we get ready for sex?" Naruto suggested.

"Uhm, it might be a bit embarrassing, for Boruto as well but… Boruto, do you want to see how we do it?" Hinata asked him.

"Sure mom. I want to learn about it."

"Okay. Just sit there and learn from us." Naruto instructed him.

Naruto kissed Hinata to start their foreplay. Soon their hands when running against each other's bodies with Naruto focusing on holding Hinata's breasts.

"Touching each other is one of the ways to get aroused and the breast is one of the places where it can feel good." Naruto told him as he fondled his wife's bountiful breasts. "But of course you can always go down for a better response."

And then Naruto shifted his hand to cupped Hinata's pussy and began to rub on it. Hinata returned the favor and grabbed Naruto's dick which was already begging to harden. A few strokes and it was totally erect. Hinata on the other hand was starting to drip with her juices to which Naruto could feel on his fingers as they inserted inside her. Deeming they were aroused enough to demonstrate it to Boruto, they stopped.

"So uhm, here's what the penis looks like when aroused." Naruto pointed to Boruto, his 8-inch penis standing proud with his foreskin tightly pulled back and revealing the head. He pushed it down and released it, showing to Boruto how it springs back up to show him that it was hard.

"It's so big." Boruto remarked. He has seen his father's penis every day and knew that it was definitely a lot bigger than his, but he's never seen it that big and positioned in that way. Hinata then suddenly grabbed his dick to his surprise.

"Want to try holding it Boruto?"

"Wait, honey what?" Naruto asked in surprise.

"Just for him to know what it feels like."

"Uhm, okay then. Here Boruto, try holding it."

"But didn't you say before that we shouldn't touch other people's genitals."

"Well uhm, of course you shouldn't touch them, especially not without their permission. Touching each other is mostly for couples, that's why I and your mom were doing it. But for one time only, if you want to know what it feels like, it's okay."

"Okay then." And so Boruto reached out and held his father's hard penis. He tugged on it and indeed it was hard. Solid. Not like his own. "Wow, it is hard."

"Told yah."

Boruto then took his hand away. This time though it was Naruto's turn to do the same for Hinata.

"Well, since we had Boruto touch mine, I suppose we should also let him know about yours." he suggested, looking at his wife.

"I'm okay with it." she agreed without hesitation. "Boruto come here, I will show you something."

Boruto did as told and went closer, squatting down so he could see better what his mom was going to show him. Soon Hinata spread her legs and pussy and showed to Boruto how slimy it was getting.

"When girls are aroused, they secret a slimy fluid so the penis could move smoothly in and out. We haven't told you yet, but the reason why your dad was moving his penis in and out of my vagina is because while it feels good to rub one's penis or vagina, there's a certain point that if you do it repeatedly for a period of time, you'll experience a very strong and good feeling. At that time, the man shoots out the sperm so that's why dad was going in and out for a long time. For us girls, when the penis goes In and out inside us, it also feels good, but we feel even more pleasure when our clitoris is rubbed. See this small pink nub here, when you rub on it, it feels good too. We can also feel good without sex, and we just need to rub the clitoris or as in your dad's case, the penis. It will still feel good but sex feels better so that's why we do it sometimes."

"What does feeling good feel like?" Boruto asked, no idea whatsoever about the feeling they were talking about.

"Well, you have to experience it to know it. It's hard for us to describe it." Naruto chimed in. "If you want, I can teach you tomorrow."

"Okay dad."

"So Boruto, why don't you try putting your finger inside my vagina so you can feel what I'm talking about."

"I suppose." And so he did. He brought a finger and slowly put it inside, feeling the warm and slimy fluid his mom told him about.

"Now try to push it in and out." she instructed and he followed. "See how easy it is to move it? The same thing goes with the penis."

After satisfying his curiosity, Boruto withdrew his finger and saw the slimy liquid on it. He wiped it on the sheets because it felt a bit uncomfortable.

"Well, now that Boruto knows about arousal, then sex is the only thing left." Naruto said. "You ready to see it?"

"I'm ready."

"Okay. So just watch there and your mom and I will have sex. If you want a better look just move closer so you can see better. We might do something we haven't told you about yet, but we'll explain it later. Just remember, we're having sex to feel good and have fun so your mom and I can sometimes do weird stuff. This is normal for couples though so don't be too alarmed."

"Got it dad. I'll just watch and learn from you."

"You ready honey?" Naruto asked Hinata. She nodded. "Before that though, think you can help me a bit here?" he asked, showing Hinata his not so erect dick. She understood and shifted her position so that her face was near his dick. Naruto lied on his side to face his wife's pussy. Without any more words, Hinata grabbed the soft dick and began to lick it then proceeding to take it in her mouth. Boruto eyes grew wide at the display. He remembered that his dad said they might do weird things so that must be one of it. But like what his dad told him, he didn't get too alarmed from it. On the other end, he saw his dad open up her mom's pussy as he too licked it, just as his mom was doing to his dad's dick. He saw him slip two fingers inside, like what her mom had him do earlier, but then his dad started to thrust it in and out and he could hear his mom moaning from it. The two went on with this for a little while longer until Naruto said he was ready.

No more talking was needed as Hinata positioned herself lying down on the bed, Naruto climbing on top as he held the back of her thighs and raised up both of her legs towards her chest. Boruto could see how exposed her mom's pussy was and how wet it has become. Soon Naruto lined up his dick and with a gentle but deep push, he was full-length deep inside her. Boruto could only wonder as to how such a thing was possible, but then again, her mom did tell him he came out from there when he was a baby.

He watched as his dad started thrusting his hips forward and back, seeing his dick going in and out of her mom. This was sex, the one they were talking about. The thing they were doing when he was watching them from behind the door earlier. But now he could see it up close, everything that was happening. He could hear the sounds of skin slapping, the squishy sounds from inside, his parents' moans as they have sex. As he was able to take a long look at it, his focused shifted towards the top where he could see his dad sucking on his mom's breast, just like when his little sister used to when she was a baby. It looked like his mom really liked it.

Then after a few seconds, his parents shifted position so that his mom was lying on her side, the front of her body facing Boruto and his dad was behind her. He could see his dad's dick was still inside. Their position made what was down there even more visible. He thought that they must have changed positions to better show him what was happening. The two continued to have sex and now his dad brought his fingers to his mom's small nub that she showed him. He rubbed on it as he continued to thrust in and out of her for Boruto to watch.

From the corner of his eyes, Naruto saw that Boruto's penis was hard. He thought that his son mustn't have realized it yet, but Naruto knew that bodily reactions were bound to happen, knowingly or unknowingly. He whispered to Hinata to inform her and she took at look, smiling at how their little boy was already growing up.

Contrary to what Naruto thought though, Boruto did notice it. He felt the discomfort in his crotch and was surprised to see his penis standing, just like how his dad's was. He felt like rubbing his thighs together and when he did it felt good, like that feeling when scratching an itch. He wanted to feel more of it, but he was unsure how.

"Uhm D-dad? My penis is… feeling weird." he told him.

"It's a natural response Boruto. Do you want to know how to take care of it?"

"Take care of it?"

"Like what I showed you earlier. Honey, why don't help out our son. It will be hard to double task on my side."

"You're the dad but okay, I'll try." she agreed. "Boruto come over here."

The boy did as told. Hinata instructed him to hold his penis by wrapping his hand around it just tight enough to hold the skin, and then move it up and down. It didn't take long for Boruto to understand what he needed to do as the need for relief was almost instinctive. His mom told him to just keep on doing and he would feel something like an urge to pee, but that he shouldn't stop there since after that he was gonna feel something very good.

His parents continued to have sex while Boruto continued with his first masturbation. He stroked his dick repetitively and with each stroke the feeling on his crotch felt better and better. His hand sped up in pace, as if it was trying to catch up to something. And that something was getting really close. Boruto could feel it and soon enough he felt a sudden build up on the base of his penis. It scared him and yet he continued until he finally reached it.

He climaxed.

He experienced his first orgasm. He groaned out as the novel sensation hit him. And boy did it hit him hard. He felt his penis twitch violently with each pleasurable wave that lasted for around ten seconds. Little did he realize that in the background his parents also reached their own climax, Naruto shooting his pent-up load heavily inside his wife.

"Mom, that was…" Boruto panted out as he came out of the high that the orgasm put him in.

"Felt good right?" Naruto asked.

"Yeah. It felt really good." Boruto agreed.

"Well you might not have noticed but your mom and I also reached our own 'good' part. Remember the stuff we told you about that comes out of the penis so that a woman can get pregnant? I'll show it to you now."

Naruto pulled out his softening dick from Hinata's pussy and out came the thick, slimy white-fluid which dripped down her thighs.

"This is the fluid where the sperm is in. In science they call it semen but normally we just call it 'cum'.

"It kinda looks gross and sticky." Boruto observed. "How do you make that?"

"You'll have it when you get a bit older. Maybe when you're 12 or 13 years old. Remember when you felt that good sensation when you rubbed your penis? This comes out the moment you feel that. From the looks of it, you can't make it yet so you'll have to wait a few more months, or a year."

"I see. So that's how you make babies."

"Yes, but also to have some fun." his mom reminded him.

"So uhm, now that you know what your mom and I were doing when you were watching us from behind that door, I suppose it's time for you to go back to bed."

"Oh, uhm yeah. Oh, I forgot I was supposed to go to the bathroom to pee."

"I know you might have a lot of questions left so we can talk more about it tomorrow. That okay?"

"Yeah dad. I uhm, I'll be going now. Thanks."

"Good night Boruto." his mom wished him

"Yeah, good night kiddo." Naruto added too.

"Good night mom, good night dad. Uhm, have fun?" he said. His parents chuckled.

"Don't worry Boruto. Your mom and I are still gonna have loads of fun."

Note:
This might not be the end of this story. I might follow up on how Boruto explores this new knowledge and curiosity it brings. Just leave in the comment if you would like to see that or what you might want to see.