“This is my room,” she said in grand demonstration. She was pretty ordinary for an eleven year old girl. Mousey brown hair, plain dress. “We should be left alone here for a while, until my parents come home this evening.”

“Are you sure you want to just… get naked?” Chris asked uncertainly. Two years her elder, the thirteen year old boy also had brown hair albeit short and scruffy, with a T-shirt with a football on it, and some big blue shorts with lots of pockets. He was starting to get taller than Lisa, but only by a few inches. It still made him seem really exotic and boylike to her.

“Yeah,” Lisa said eagerly, sitting on her bed, “I’ve never even seen a boy naked before!”

“Not even your father,” Chris said, still unsure of whether to sit with her.

“Nope, never seen him,” Lisa said definitively. “I know he has a… I mean, I was just curious, you have a… penis, right?”

“Uh… yeah?” he replied, not sure of if she wanted to know just what that meant to him. “It’s normal, right?”

“Yeah, but, well…” Lisa blushed, then stated, “I don’t have a penis. So I was just curious about them. And you just kind of… have one. So let’s get naked! You’re curious about my girl parts, aren’t you?”

“Oh, totally,” Chris said, giving up and sitting on the bed with her, “It’s so cool how you have a… I can talk about it, right?”

Lisa responded by standing up and pulling off her dress. The only thing she had underneath was a thin t-shirt, heart panties, and socks. “You can do more than just talk,” she told him chastisingly, turning to face him, “You can even see them, because I want to see yours too. So… um…”

She blushed heavily, but then just struggled down her panties, pulling her feet out of them one by one, then standing there, legs spread, facing him. “See? It’s my… not penis.”

She frowned, saying, “I don’t know what you call the outside part. Most of it is inside.”

“You really go inside there?” he asked in wonder, gazing at the girl’s naked labia.

“That’s what the Body book said,” she said, sitting down on the bed next to him, “It also said I have a hymen, but I tried to make sure it was open, with my finger.” Hooking a finger inside of herself, Lisa demonstrated, wincing a little as she tugged at her entrance with one, then two fingers pulling it apart. “P-pretty cool, huh?” she asked, blushing harder, “I didn’t g-go inside inside though. Just enough to get to the tight spot. I-it actually hurt a lot. But it’s okay now.”

Poking his side, Lisa said, “Your turn. I wanna see your penis already.”

He wasn’t sure she did. That thing had turned into a hulking monster over the past few years. Consuming his attention, growing bigger and thicker the more he masturbated. Seeing the semen shooting out of it, shooting semen out of himself, knowing what it could do to a girl. Even… Cindy, maybe. It was already half-erect just from seeing her naked.

“Y-you know how it gets big, right?” he asked, standing up from the bed.

“Yeah, but I wanna see it small too,” she said, “So don’t worry about getting big just yet. What does it feel like when it gets big?”

“It… it really wants to go inside a girl,” he explained simply, “I was just telling you because… my penis is already starting to get big. S-sorry I can’t stop it much.”

“Well hurry up then!” Lisa whined, “I want to see it getting bigger!”

To Chris’s surprise, his penis was a lot smaller than he expected, what from standing up and the act of pulling his pants down. “I-it goes up and down sometimes,” he said, redfaced, as he dropped his pants. Lisa’s eyes were of course glued to his dick hanging there.

“So when you pee, it comes out from there?” she asked in unbelievable curiosity.

“Where does it come out for you?” he countered.

“W-we could oh wow. I wanna see you peeing, Chris!”

Kicking his shorts and briefs off his remaining foot, he said resignedly, “I guess it can’t hurt at this point.”

“First take off your shirt!” Lisa ordered, “I’ll take mine off too. We have to get all the way naked!”

The two kids struggled their shirts off, then pulled off their socks. “S-sorry I don’t have any breasts yet,” Lisa said shyly, comparing their relatively equally flat chests, “I’ll totally let you see mine when they start coming in though.”

“That sounds amazing,” Chris admitted, “I don’t mind if you don’t have them yet. It’s not like you can’t… um… h-have sex without them, right?”

“Y-yeah, they’re just breasts, and all my sex stuff is right here,” Lisa said, indicating where the soft round curve of her belly descended into the velvety V between her legs.

“How do they come in?” he asked curiously.

“I dunno,” Lisa said in a dissatisfied tone, “The book just said they come in. I guess they just start… swelling up with milk?”

“Boy, making milk, that must be pretty crazy to think about,” Chris said.

“Ehe yeah,” Lisa replied, pretending to squeeze her boobs but only getting her nipples, “Just squirting right outta these babies.”

Chris found that entirely too amusing.

Lisa danced around her room, declaring, “Hee hee, just walking around being a gurl.” She attempted to pose seductively, pointing her butt at him and saying teasingly, “You wanna put your penis in here, huh?”

“N–y–we can’t do that,” he said in frightened disapproval, “Didn’t you start your period earlier this year?”

Lisa glanced down at that, saying, “Y-yeah, but it’s okay. It’s not really blood. I-it is kind of gross though, sorry.”

“Hey, it’s no problem!” Chris protested, standing up from the bed, “I think it’s really cool how your body can just… make a baby like that. So a little gross… stuff coming out of you is fine.”

“You say that now,” Lisa said, with a roll of her eyes.

“I’m just saying you could get… pregnant,” Chris said haltingly, “If I just… just put it in there.”

Looking at him pensively, she asked, “Have you ever done it?”

“Done sex?” he asked in confusion, “No.”

“No, have you ever… you know… jaculated,” she said, “Where the semen is propelled and I think it just kind of… squirts out of you right?”

“Y-yeah,” Chris admitted with a blush, “But if you wanna see me pee, I can’t do that. It keeps me from peeing when I get erect.”

“Oh, well let’s hurry then,” Lisa said, then headed out of her room. The two naked kids ventured down the stairs of the empty house, entering the main bathroom. “Alright, go ahead and do it!” she announced, sitting on the edge of the bathtub by the toilet.

“O-okay,” he said, looking at her, and then… taking his penis in his hand. It felt more intense doing that, just because she was there to see it. Just grabbing his naked penis and balls, and holding up the penis over the toilet. “It comes out like a…” he said, too embarassed to say as she watched the tip of his penis swell with urine then come streaming out of it, landing in the toilet water.

“It’s like a hose!” she declared in astonishment, the one word he’d been afraid to describe himself by. His pee almost shuddered to a halt at that, but he managed to say uneasily, “Yeah, that’s me… the big ol’ pee hose.”

“Can I feel it?” she asked, leaning forward to cautiously pinch her fingers around the peeing phallus. “Oh, you can feel it going through your penis!” she declared in wonder, “It’s so…”

Blushing, Lisa relinquished her exploration of his penis, saying to Chris, “I didn’t know it was going to be so soft. I-it felt really good, on my fingers. Like soft and… nice.”

“It gets a lot harder,” he said, after he finished peeing, “Right before I ejaculate.”

“What is that like?” she asked in fascination, still looking at his penis as he squeezed the last few drops of pee out.

“Hard?” he replied.

“No, what is it like to ejaculate?” she asserted.

“It’s… it feels really good,” he said, “Have you ever had an orgasm?”

Blushing, Lisa said, “I—I did. It was when I was trying to take care of my hymen. It just started feeling really good. And I kept rubbing until… it just started moving really crazy, and it was so sparkly inside me, and it… m-made me want to put a penis inside me.”

“Well, it’s like that for me,” he said, “So it feels really good. But then I can’t stop squirting out semen. That’s why I… didn’t know if we should get naked. Because when I ejaculate it just starts squirting out, and I can’t stop doing it, and I think about how if any of that went in a girl…”

His penis subtly swelled as he shamefully admitted, “And then I want to put it in a girl, and ejaculate, and make her pregnant.”

Lisa gazed back at the boy pensively, before saying, “Well… I started… getting wet when I was orgasming. It… it’s more slimy than wet actually. It just… I–I could feel it starting inside me, all weirdly. And then coming out. And I just r-really wanted to find a boy and just sit on his…”

Glancing away, she didn’t notice his penis swelling further, when Lisa admitted, “I wanted to just sit on his penis and feel it ejaculate in there. And make me pregnant.” Blushing, she added, “I-it’s weird because why would I want to do that, ever? But touching down there did make me really… want it.”

Chris reached for the flush lever, before Lisa snapped to look at him declaring, “Wait! I haven’t shown you my peeing yet!”

Stepping back, Chris said, “Oh, okay,” eyes turning down to his friend’s mysterious featureless pelvis again.

Lisa started to sit down, then hesitated, then said sheepishly, “I u-usually sit down to pee, so you can’t really see it…”

“You have to sit down?” he asked.

Shaking her head, Lisa said, “No it just… kind of goes all over the place so I need to… y’know…”

“You could do it in the bathtub,” he suggested, “Then we just wash all the pee down the drain.”

Lisa’s eyes widened, and she said, “Yeah! I could, couldn’t I!”

So pretty soon she was bracing against the far bathroom wall, standing in the tub, saying, “Okay, here goes.”

Her vulva may have shifted slightly, before a strong spray of urine burst out from them, hissing as it hit the floor of the bathub. “Sorry! I—” she said blushingly, then the spray lessened to more of a steady stream.

“…and that’s how I do it,” the peeing Lisa said with a weak smile, looking back at Chris.

He was staring at her vulva of course, saying, “Wow it… just comes out of you down there. It smells… n-not all the way like pee. Just… thanks for doing this for me. I didn’t know girls could just pee like that.”

“It’s only fair since you showed me,” Lisa said as her own flow of urine trickled off. They made with the shower head then, carefully washing off Lisa’s bottom, and washing any traces of urine down the drain.

“Guess I don’t need to use toilet paper now,” Lisa said bemusedly, “I’m just wet so I’ll use a towel.”

“Can I—use the towel on you?” Chris asked anxiously.

Lisa gave him a thoughtful look.

“I just wanna…” Chris blushed, “Feel your… girl place. How there’s no… penis there and just towel it off you know?”

“Well okay,” Lisa said, “Just don’t be too rough!”

Chris was anything but rough. If anything he was too gentle as he patted her belly dry and pressed the towel into her labia as he conformed his hand around the curve of her pelvis. She was definitely feeling wet after being dried, wet in a slimy way, but it would mostly remain inside her until… a little later.

“What—uhm…” Chris said, and Lisa squeaked as something yanked down within her vagina. “What’s this string coming out?”

“Oh that’s… that’s called a tampon, sorry,” Lisa said, “I have to put it in my vagina to soak up all the… bloody stuff. It doesn’t hurt, I swear, but it’s really… kind of crazy looking when it comes out. I can… go pull it out. My period actually should be done by now. This one at least.”

“Pull it out?” Chris asked curiously, “Like…” he gently tugged the string, making Lisa shiver at the feeling.

“Yeah, p-pretty much,” she said nervously, “It just sort of… slides out!”

“Can I pull it out?” Chris asked hopefully.

Lisa blushed. “You… sure can,” she said less confidently than she wanted to, “Just… I’ll let you know if you’re pulling too hard.”

She sort of squatted there then laid back on the bathroom floor, as he tugged at the tampon’s string gently. “H-harder than that,” she grumbled. He pulled harder slowly, the pressure inside her increasing as he did, until something slipped and she yelped, “Here—here it comes! You can just… p-put it on some toilet paper and put it in the garbage is what I’m supposed to do. Never fluUUSh it.”

His insistent pulling slid the tampon right out of her. She couldn’t hold it back inside at all, just watching as the icky, bloody thing slid out of her nether lips.

“Woah, that is gross!” Chris declared, as it half stuck out of her, “How big is it?”

“J-just get some toilet paper you don’t have to touch—and he already pulled it out to plop into his hand.”

“I don’t mind touching it,” he said fondly, “It’s not like it’s really blood, right?”

Lisa felt like she was melting between her legs in the wake of that, as she watched her friend wrap up the tampon, throw it away, then go wash his hands. She wanted a boy to pull out her tampon every time if it was that good. Standing up, she wiped herself with some toilet paper, flushing the bloody streaked paper down the toilet at least.

“It’s better than wearing a diaper,” she said with a wince.

“What’s it like?” he asked, “Having something inside you like that?”

“Oh, actually it’s weird because you can hardly feel it at all once it’s in there,” Lisa declared, “It only feels really weird when you’re putting it in or taking it out. Like… yanking on my guts in there or something. It’s not… terrible, just weird.”

She looked down and then declared, “Oh, Chris you’re getting an erection!”

“I am?” he asked, looking at his own swelling cock. “Oh, heh… that’s hard for me to notice too sometimes. I can kind of feel it now though. It’s just… thinking about your bottom, and putting things inside…”

“Can I feel it?” Lisa asked hungrily, “I wanna feel what it’s like getting erect.

“S-sure go ahea—” Chris said, and now he was the one sitting on the bathroom floor, while Lisa wrapped her hand around his penis and squeezed. It swelled against her, a powerful force expanding it that not even her hand could resist. “It feels…” Chris panted, “Feels good when you squeeze it…”

“I can’t,” Lisa said, trying to squeeze it with both hands, but it just bulged outward getting stiffer and longer, until it was like trying to squeeze a wooden pole.

“That’s… that’s as erect as I can get,” Chris said breathlessly, his penis throbbing in Lisa’s hands.

Lisa shakily moved one hand to cradle his soft scrotum. “T-these are what would impregnate me, huh,” she said softly, “Just getting ready to… squirt your semen right into me. A-are you gonna ejaculate now?”

“Can I… ejaculate inside you?” Chris asked, flush-faced.

Lisa knew she shouldn’t, but what she said was, “Yes, you can. I want to… feel it inside me.”

Chris kind of hunched over her, pressing his penis into her labia, and Candy yelped, “Wait! But…”

He paused.

“Can we do it on my bed?” she asked hopefully.

Two very horny youths hurried up the stairs, and Lisa had hardly laid down before Chris was trying to put his penis in her. He knew he shouldn’t, and they couldn’t be having children, but boy did he want it. “Wait, wait use your hand first,” Lisa said, struggling with his eager compulsion, “I want you to feel me with your hand like I did with you.”

“O-okay, but I… I want to put it inside you,” Chris said tensely, “And ejaculate. And make you pregnant.”

“W-well touch me here,” Lisa said, pulling his hand against her labia, “And I’ll… want it too.”

“You’re… wet already?” Chris asked unsurely, focusing on feeling at her pelvis in fascination. “Oh, your place is so soft,” he said in awe.

“I’m… I’m making wetness,” Lisa confessed, “For you. Keep touching mn—me. T-try pulling me open to see in there.”

Chris did, and Lisa couldn’t believe how much she wanted him to follow with his penis. “If you put your… penis in there,” Lisa said tightly, watching him spreading her and seeing all her feminine gross glowy, “Then a… a baby comes out of there. It s-stretches like a rubber band, and I can’t stop pushing her out. T-that’s what you’re gonna do to me.”

He tried stretching her, and Lisa whined intensely, as Chris said distantly, “Doesn’t seem stretchy enough.”

“It—it gets stretchier, I guess,” Lisa said, openly staring at the boy’s throbbing erection. “But you wanna put a baby in me because… because you can ejaculate in there then. And… and I want…”

Chris left her labia alone then, straddling her with his arms on the bed. “I want to put a baby in you,” he said fearfully, “Y-your belly’s gonna be growing big, and I’m not gonna stop. Oh…” She felt something very hard, yet velvety smooth press against her labia, and then… slide further.

“Oh, oh it…” Lisa said, watching Chris’s penis vanish into her young hips, but not too young. “It’s like my… outside feeling is turning to an inside… wow. Y-you just keep stretching me deeper, huh?”

“Y-you didn’t say you were hot!” Chris protested, blushing as he hilted in her needily, “M-my penis… really wants to ejaculate!”

“G-go ahead then,” Lisa said dizzily, hugging her hands around behind Chris as he penetrated her between her spread legs. Then he pulled out, and pushed in. Pulled out and pushed in. The sliding was incredible. He was so hot and soft and something in there. “It feels so… different from a tampon!” Lisa declared urgently, “You’re—you’re gonna… your penis is… unh unh unh…”

The two pretty much just grunted and thrust urgently together after that. Lisa orgasmed in seconds, crying out as she shook against Chris’s invasion, clinging to him while he thrust into her desperately. He didn’t ask. He didn’t do anything other than fuck her like an animal.

As she came out of it, she gazed up at him, and he gazed down at her, but he lost sight of her. His eyes grew distant and intense as he felt himself readying to ejaculate. Chris’s gasps rose in pitch, as Lisa shakily asked, “Are you…? Are you…? Gonna ejaculate…?”

“Yessss, it’s…” he moaned, humping her hard, “It’s happening. I can’t stop it! I want to fill you with my… unh gonna push so deep… hnnh hnnh hhnnnh…!”

The bucking boy filled Lisa to the depths of her belly, grinding against her, gritting his teeth as he said, “Here—it—!”

Then he gasped out a cry, as his penis started jerking strangely inside Lisa. She sucked in a breath as a strong spurt of something erupted up in there, even deeper than his penis was. Then another and another. “I—I’m pregnant,” she said in disbelief to the quivering, orgasming boy, feeling his slimy semen in there forever, “I felt it in there. It’s making me pregnant!”

“S… sorry… I needed to…” Chris said, sagging against her.

“It’s changing me!” Lisa whined, hugging against him as her insides did strange things to her that she couldn’t help but want.

It might not have taken then, but after the fourth or the fifth time over the next month, it must have took. Lisa stared distantly forward as her friend grabbed her, filled her from behind, and she felt him pumping his potent sperm inside her. “Gonna get so biiig for you,” she moaned, “Gonna push out our baby…”