Cammy's Curiosity NOTE: This story is a follow-up to "A Son's Surprise" For several years after Cammy was born, Andy stayed with his mother, serving as a big brother to the young female 'roo and a surrogate mate to his mom. Andy and his mother had sex on a regular basis and would often sleep in the same bed, all while Cammy was too young to know what sex was. However, after a while, things started to change. After he finished college, Andy felt that it was time that he passed on his seed to a female outside of his immediate family. He knew that his mother would not be able to give him more sons and daughters, and while he still loved her and cherished their time together, his biological urge to breed could not be ignored. Eventually, Andy moved out of his mother's house, leaving Kimberly and Cammy by themselves as the adult male 'roo sought out his own life, just as Bernard had done years earlier. Kimberly was sad when Andy left home, but knew it was for the best. He needed to start his own life and produce his own family...although if she were younger, she'd probably let him breed with her some more. Andy met a vixen a few years back while he was still in college, marrying her and producing a pair of kangafox twin boys. He felt proud of his sons and did his best to care for them, but he never forgot about where he came from or what he gave to his mother either. Fortunately, his wife understood how Andy felt about his mother, having developed an incestuous relationship with her older brother many years ago. She still saw him occasionally, but their relationship was of the "siblings-with-benefits" type. She didn't mind letting Andy visit his mom and continue having sex with her every once in a while, as long as he granted her the right to continue seeing her brother. Meanwhile, as Andy and Kimberly were adapting to the changes in their lives, Cammy was undergoing changes in her own. The young female 'roo just turned 13 and was well on her way to becoming an adult. She had grown to be about as tall as her mother, with developing "B-cup" breasts hidden underneath her bra and clothing. She was trim and athletic, having powerful legs (much like any kangaroo) and was on a youth basketball team during the winter months. In fact, the local high school was impressed by Cammy's play that they wanted her to try out for the varsity basketball team...but she couldn't do that until she was in 8th grade, which was about a year away. As Cammy discovered that her body was changing, she started to grow an increased interest in males...an interest that was further fueled by what she learned in school. Like any other young teenager, Cammy was at that point in her life where it was time to learn about sex. The school taught Cammy all the basic things she needed to know, about what sex was, how it was done, and how the male and female anatomy differed. However, there would be some lessons that the teenage female would need to learn first-hand. Cammy was still a virgin, but growing even more curious about sex by the day, especially when she started to hear a couple of her friends talk about how they had already tried it for themselves. The more she heard, the more Cammy became interested in receiving her first sexual experience, which led to a conversation that she had with her mom one Friday evening. It all started sometime after dinner, while Kimberly was down in the living room watching an old movie being played on an all-movies channel. Cammy was in her bedroom, beginning to study for an upcoming pre-Algebra test. Cammy didn't care a great deal about pre-Algebra, but she knew that her mom would be upset if she didn't put in some sort of effort. So, she did her best to focus on work, going over the suggested pages for study, soon feeling as if there was too much floating around inside her brain all at once. After several minutes, Cammy slammed the book shut, put her head down on her desk and sighed. "Why do I need to study all this for anyway? It's not like I'm ever going to need to know it...right?", she grumbled, feeling as if she couldn't push herself any further...at least not at that time. She started to feel as if maybe she needed to give her brain a break, to do something she wanted to do instead of force math problems into her head. If it were light outside, she could've gone out to the driveway and shot the basketball around for a bit on the rim that Andy put up for her when she first got interested in the sport when she was 9. However, since it was nighttime this wasn't an option. The next thing she thought about was playing games on her computer. She recently downloaded the PC version of "House of Kitsune" for her personal computer, receiving the download key from Andy as a birthday present a few weeks back. She had made a little bit of progress in the game but had yet to make it past the first temple. However, Cammy didn't really feel like going on more adventures with Keno and Yuki right now. She wasn't sure what she felt like doing and soon crashed onto her bed, staring upward at the ceiling. "There's nothing to do around here! I wish I didn't have to study for that stupid test, at least then maybe I could go out with my friends and do something fun!", Cammy grumbled, feeling as if she were caged in her own room, forced to cram pre-Algebra into her brain for the test Monday morning. She would've liked to go to a movie or something...perhaps even find her first boyfriend while she was out. Kimberly approved of letting Cammy date if she wanted to, but to keep things non-sexual until she was sexually mature at least. Cammy's body was already capable of reproduction, but with her going through puberty using yiffberries as a contraceptive measure was risky. The reproductive hormones of a female who was just starting her reproductive life varied wildly and the risk of an accidental ovulation was high. Therefore, it would've been best for Cammy to wait until her body fully matured and her reproductive potential could be properly measured, which would likely be one or two years away. That didn't mean that Cammy didn't have thoughts about having sex, though. Cammy had a poster of a male kangaroo named Boomer in her room, who was both a male model and a resident of Screwtopia Towers. Boomer was a tall and strong male roo, with milk chocolate-colored fur, long blonde hair, and deep blue eyes that seemed to stare at Cammy with considerable interest, even though Boomer was twice her age. All he wore in the poster she had on her wall was a pair of cut-off shorts, covering the 17-inch penis he had underneath them. This is the reason why Kimberly allowed Cammy to keep the poster, because it didn't feature any erotic imagery in it. Of course, Cammy wasn't aware of the cannon Boomer was packing inside those shorts of his, she just saw the muscular male posing for the camera. Nevertheless, Cammy felt warm and wet downstairs from looking at Boomer's picture and began to touch herself as she had a daydream about being "Mrs. Boomer". The curious female 'roo rubbed her fingers across her sensitive clitoris, thinking about what it would feel like to receive a long and powerful male 'roo inside her for the first time, feeling the warmth of his semen spreading through her young body, and even thinking about creating a few young 'roos of her own. She knew her mom would never approve of her breeding at 13, but she was free to dream about it. Cammy masturbated to the poster many times before, and each time she did, her desire to try the real thing grew. She continued to daydream, imagining Boomer wrapping his powerful arms around her from behind, embracing her to his body while introducing his penis to her young vaginal passage yet again. She imagined that Boomer was a passionate and eager male, one who enjoyed having sex, but also compassionate to the feelings of his partners. That part of Boomer's personality was true in real-life, but Cammy never knew that Boomer's penis was about twice as long as she imagined it. At her age, assuming that Boomer were to meet Cammy and risk getting caught having sex with a teenager, Boomer's penis would've been far too big for her to handle. Only a mature female like her mother would be able to comfortably fit Boomer's length inside her. Each time that Cammy pleasured herself to the thoughts of Boomer, her desire to have the real thing increased. The first few times she masturbated were enough to fully satisfy the young female's urges, but with each subsequent time, it took longer for Cammy to feel her satisfied. The feeling of touching her love button did bring Cammy pleasure, but her fingers could only do so much. As such, Cammy continued to touch herself while thinking about Boomer, losing track of the time along the way. It seemed like it was taking forever for Cammy to get off, even though she thought about what it would be like to be impregnated by the powerful male numerous times. Finally, after trying to get off for nearly an hour, Cammy came to the realization that her poster wasn't going to cut it any longer. She needed the real thing, and she needed it soon. Cammy wasn't sure of what to do to make herself feel better, so she figured the only thing that she could do was to ask her mother for advice. Cammy left her bedroom after putting some fresh panties on and visiting the bathroom to wash her hand, heading to the living room where her mother was sitting. It was about 9 PM in the evening, about an hour before Cammy would normally go to bed, and Kimberly was in the middle of her movie when Cammy showed up. "Mom...can I ask you something?", the curious teenage 'roo asked, getting Kimberly's attention right away as she grabbed the nearby remote and pressed the mute button. "Of course, sweetheart. What's on your mind?", Kimberly calmly asked, wanting to assist her daughter. It was at this time when Cammy began to blush, feeling a bit awkward about admitting her feelings to her mother, but not really seeing any other alternative. "Mom...when you were around my age, did you ever have thoughts about sex?", Cammy shyly asked, turning away from her mother afterwards with her cheeks turning bright red. The instant Kimberly heard Cammy bring this question up, Kimberly turned the TV off and went over to her daughter, coming up behind Cammy and taking her daughter into her arms. Kimberly softly rubbed her daughter's upper arms and did the best she could to comfort the teenager. "Cammy...there's nothing for you to be ashamed of. It's perfectly natural for you to have these desires. Your brother felt like this when he was around your age, too", Kimberly assured Cammy, referring to how she and Andy had sex together. "You're just going through a point in your life when your hormones are driving you to try things that you may not be ready for", Kimberly continued, also trying to help Cammy see that she didn't need to have sex just because she wanted it. "You should only have sex with someone who means something special to you...not just give it up to any random male because you feel like doing it", Kimberly added while caressing Cammy's upper arms, making the younger female turn towards her mother as she had something to say. "But, I want to do it, Mom. I've tried masturbating whenever I've felt like this, but it doesn't seem to be working as well as it used to", Cammy explained. "Isn't there some way that I could know how it feels to have sex?", Cammy asked a few seconds later, with the fire between her legs burning strongly. She was eager to feel a male between her outer folds and wasn't content with waiting until she was a few years older. Kimberly could tell that Cammy was under a lot of stress and got an idea. Before Andy left home, he gave his mother a gift of a dildo in the shape of his penis. That way, Kimberly could have something to remind her of him, even when he wasn't around to pleasure her the natural way. "Wait right here, I have something to give you", Kimberly mentioned to Cammy before going to her bedroom and opening the wall safe behind the picture on the wall of her, a 6-year old Cammy, and Andy. Inside a small lock box, Kimberly kept the dildo shaped like Andy's maleness, pink in color and designed to feel like the real thing. She brought the whole box down with her, along with the key for it. Cammy waited in the living room, having a seat on the couch while waiting for her mother, curious about what she had for her. At the same time, Cammy felt the 'fire' between her legs burning strongly, craving the warm and throbbing sensation of a kangaroo penis buried inside her. She did her best to ignore the feeling, crossing her legs while sitting on the couch, fidgeting a little bit. A few moments later, Kimberly returned to the living room, sitting down next to her daughter and handing the box to Cammy. "I know that you're still a little young to try it for yourself, but maybe this will help until you're ready for the real thing", Kimberly explained as she placed the key inside the lock and opened it up, revealing the dildo that was in the shape of Andy's 14-inch long penis. "Your father gave this to me a long time ago, and now I'm passing it onto you", Kimberly commented as Cammy looked at the dildo and was amazed by what she saw. Kimberly hadn't told Cammy that Andy was her father, she figured that she'd either let Cammy continue to think that her father was missing or to let Cammy find out the truth for herself. "Wow...no wonder why you still love Daddy!", Cammy commented excitedly upon seeing the toy, impressed with its length. She soon took it out of the box and held it, feeling the softness of the realistic plastic against her hand. "Mom...if Daddy ever comes home, do you think that he can help teach me what sex feels like?", Cammy soon replied. Kimberly took Cammy into her arms and hugged her tight. "Don't worry honey, I'm sure he will. However, not until you're old enough for yiffberries. We don't want you getting pregnant before you're ready for a family of your own", Kimberly answered while Cammy embraced her mother, happy with what she had received from her. "Now, why don't you run back to your room and give it a try while I watch the rest of my movie", she soon mentioned to Cammy, preferring to have some private time of her own. Cammy agreed and quickly scurried back to her room to see if her new toy would help ease her tensions. Then, as soon as Cammy was out of sight, Kimberly reached for her cell phone and called Andy's house. In a two-story house, several dozen miles away... Andy and his vixen wife were relaxing in bed after they both had a long day, with Andy busy at work and his wife busy taking care of their boys. The kangafox twins were in their beds, sleeping peacefully while Andy and his mate were watching the same movie his mother was on their bedroom TV on their dresser. The cordless phone on the nightstand by his wife's side of the bed soon rang and she picked it up. "Hello?", the red and white-furred vixen answered in a soft tone, hearing a familiar voice on the other end of the line. "Oh, hi "Mom"...yes, Andy is right here, I'll give the phone to him", the vixen continued, referring to Kimberly as "Mom". Her biological mother passed away when she was 16, and when Andy married the vixen, Kimberly suggested that she could call her "Mom". Andy curiously looked over to his wife as she handed the phone to him. "Andy honey, it's your mother", she commented as Andy quickly reached for the phone and started speaking to Kimberly. "Hi Mom! What's up?", he asked curiously, talking on the phone while sitting up in bed next to his wife. "Sweetheart, do you remember what we talked about a long time ago...about how I wanted you to teach Cammy what it felt like to have sex?", Kimberly asked Andy from her side of the line as the male 'roo remembered back to what she told him many years ago. "Does this mean that Cammy is ready for that lesson?", Andy replied a few seconds later, curious to know if his daughter needed her father's guidance. "Well...not quite. She seems ready to have sex, but it's too dangerous for you to show her yet", Kimberly began to explain while Andy listened. "You see, I gave her the dildo that you gave me to tide her over until she's ready for yiffberries. I don't know how long it'll be...it could be a few weeks, or a few months, but Cammy is going to need your help soon", Kimberly continued. Andy listened to his mom's conversation and had some thoughts going through his mind. He promised that he'd show Cammy what sex felt like, just like his mother showed him, but at the same time he also didn't want to impregnate his daughter. "How will I know when it's safe to do it?", Andy asked a few moments later, curious to know when he should plan on visiting. Kimberly didn't have a firm answer for Andy, it was all dependent on Cammy's body chemistry. "How about this...since I have to take Cammy to the gynecologist every month, I'll let you know when it's safe for her to start taking yiffberries. As soon as she is, we can arrange a date for you to come over to give her the lesson", Kimberly answered. "I'll be taking her again in a couple of weeks, so you might know then if she's ready", Kimberly soon added. Andy understood what his mom was saying and agreed to wait, not knowing how long it will take for Cammy's body to mature to the point where it would be safe for her to use yiffberries. After the two of them talked about Cammy for a little while, Kimberly decided she wanted to talk about something else. "So...when you do come over to give the lesson to Cammy, would you like to spend a little bit of time with me as well?", Kimberly playfully replied, thinking that she would've liked to have sex with Andy as well. "Maybe you could even spend the night with us...sleeping with me in my bed", Kimberly continued as Andy started to blush to his mom's comments. "Mom...I'd love to...but I have a wife and kids now, I don't know if I could leave them alone overnight", Andy commented in a somewhat nervous tone. Andy's mate knew about his relationship with his mother and didn't mind it a whole lot. After all, she had sex with her brother regularly, though she never got pregnant as a result of their matings. The vixen overheard Andy's comment and nuzzled against her husband, murring sweetly to him as she spoke. "Honey, if you want to spend some time with your mother, I'm OK with that. I know that you love me", the vixen told Andy in a sweet tone, licking his cheek afterward, making him blush a bit more. "Just let me know ahead of time when you plan on going and how long you'll be gone, OK?", she continued. Kimberly heard her daughter-in-law's comments from her end of the line and giggled. "See honey? You don't have to worry about leaving them alone for the night. She knows you'll come back to her in the morning", Kimberly told her son in a soft manner, hoping to convince Andy to spend the night with her when he came over to give Cammy her lesson. "So, can you do it for me?", Kimberly asked Andy curiously, hoping to have sex with her son once again, missing the sensation of his penis inside her vaginal passage. Andy thought about it for a few seconds and gave his answer. "Alright Mom...I promise that when I come over to teach Cammy, we'll spend the night together", Andy replied before he started to feel his vixen wife reach down underneath the covers and grab hold of his sheath, coaxing Andy's penis to come out of it. Although she may have been willing to let Andy see his mother, she wanted something in return from him, and that something was to feel his length inside her vixen hole. "Anyway, I have to go now. Sophie and I have something to take care of", Andy told his mother, noticing that he was getting hard for his wife while Sophie was leaning against him some more, murring eagerly for sex. Kimberly giggled for a second, knowing quite well what he meant. "Alright honey...you two have your fun together, and I'll talk to you again soon", Kimberly commented before she and Andy ended their call, allowing the male 'roo to give pleasure to his mate. For the next several months, life went on as usual for the family, with Andy devoting his time to his wife and kids while Kimberly continued to raise Cammy. The dildo that Cammy received from her mother helped with Cammy's sexual urges to an extent, giving her more pleasure than she received from just touching herself. However, it wasn't the real thing. To make things worse, she was learning that more of her friends were sexually active, including having their sex partners cum inside them. They would describe how good it felt when their male partners would splatter their insides with semen, leaving behind a hot and sticky feeling that remained with them for hours after sex. Of course, all these females were on yiffberries, so it was safe for them to do this. However, Cammy felt left out, she wanted to experience what her friends were getting, but she knew her mother wouldn't approve until it was safe for her to do so. The seasons changed, soon it was winter...then not long afterward, Spring came around, with Cammy's body still not quite ready to handle yiffberries. Of course, the rest of Cammy's body kept growing, with her breast size going up to a "C-cup" and her voice becoming more adult in nature. Then, in early May, the pouch she had on her belly, which felt tight and only able to open a little bit for most of Cammy's life suddenly loosened and became much more stretchy, becoming able to hold a joey of her own inside of it. Of course, the design of the pouch on a Kapernian kangaroo was much different from that of a non-anthro kangaroo...not containing any nipples inside of it, since it was designed to be used as a means of mothers bonding with their joeys, rather than protection and nourishment. When Cammy told her mom that her pouch was loose, Kimberly knew from experience that it meant that Cammy's body was capable of having joeys of her own, so Kimberly immediately took her daughter to the gynecologist for testing. The test revealed what Kimberly suspected about Cammy. The young female 'roo was sexually mature. Her hormone levels had balanced out to the point where it would be effective for Cammy to use yiffberries. When the teenage female learned this, she immediately turned to her mother with a glimmer in her eyes and curiosity on her mind. "Does this mean that I can have sex now?", Cammy asked her mother, eager to try the real thing for the first time. Kimberly smiled and gave her daughter a soft kiss on the forehead. "Of course, sweetheart. However, I want to make sure your first time goes as smoothly as possible, so I'm going to let your big brother help you with that", Kimberly answered. "I'll call him tonight and see when he'll be able to come over. Until then though, I don't want you having sex with any other boys, OK?", Kimberly added, making sure that Cammy's first time would be with Andy. Cammy agreed to wait, and Kimberly called her son to tell him that Cammy was ready for the lesson. Andy told his mother that he'd be able to visit them on Saturday night, and the date was set. Now, all Cammy needed to do was to fight temptation for the next few days. Saturday Evening... Shortly after dinner, while Cammy was up in her bedroom waiting for her big brother, the doorbell rang. Kimberly, who had been waiting in the living room watching TV, got up from the couch and went to the door. She figured she knew who it was but wanted to see for herself. Kimberly reached for the doorknob and turned it, opening the door to reveal Andy on the other side. He was dressed in blue jeans and a black T-shirt, having a bouquet of red and white roses with him to give to his mother. "Hi Mom", Andy told Kimberly in a soft tone, handing her the flowers, which she promptly took from him. Kimberly smiled and soon embraced her son tightly, kissing him on the lips while doing so. "Mmm...thank you, sweetheart!", Kimberly told her son in a playful tone, already anticipating their alone time together later in the evening and sharing her bed with him for the night. Andy could detect the aroma of his mother's perfume, mixed with the scent of her vaginal juices already, showing that she was very happy to see him. This caused Andy's maleness to come out of its sheath from inside his pants, growing stiff and poking against them. Kimberly felt the growing bulge and made sure to position her crotch so that it touched the bulge. "I miss having you here with me, sweetheart. I miss all the times where you and I had fun together", Kimberly mentioned, remembering all the times where she and Andy had sex while he lived with her, and the times where she would let him sleep in her bed at night. Andy smiled and touched his mom's cheek, gently caressing it. "Well, I guess we'll just have to make up for lost time now, won't we?", Andy answered in a more playful tone, suggesting that he was more than eager to stick his long kangaroo cock back into the same vagina he came out of. He would've taken Kimberly up to her bedroom right then and there, but he had a more important job to do first. "Anyway, where's Cammy?", Andy soon asked, ready to give his 'little sister' the lesson she needed. Kimberly released her grip on her son and allowed him to come inside the house. "Cammy is upstairs in her room. I told her to make sure she was ready when you came over, so she should still be there", Kimberly answered. "I watched Cammy to make sure she took her yiffberries before you got here, so it should be safe for the two of you to do it the natural way. Just be careful with her when you do it. She's my only daughter and I would like her to give me more grandchildren someday", Kimberly added a few moments later. Andy promised that he'd take things slow...at least until Cammy got used to receiving his penis and went up the stairs, going towards Cammy's room. To his surprise, the bedroom door wasn't locked, and he could detect the faint aroma of female kangaroo juices coming from inside, helping to further stimulate his growing erection. Although he was expected, Andy decided it was best not to barge into the room and called out to his 'little sister'. "Cammy, are you in there?", Andy asked from outside Cammy's room, waiting patiently for an answer. It didn't take long for Andy to get his answer. "Come on in, big brother! I've been waiting for you!", Cammy eagerly answered, making Andy's long ears twitch a little to her response. He was surprised that Cammy seemed so eager, he thought that it would take her a little while to get warmed up. With Cammy inviting him in, Andy opened the door and stepped inside, what he saw next made his mouth drop and his penis immediately spring forth to its full length. Cammy was already laying on her bed, completely naked with her legs spread open, giving Andy a good look at what she had between them. Her vagina was bright pink in color, with a dime-sized clitoris that seemed to tremble a bit when she saw Andy enter her room. Vaginal juices dribbled from Cammy's opening, giving Andy the impression that she was already wet on the inside when he got there. "So, do you like what you see, big brother?", Cammy asked in a soft and somewhat sexy tone, bringing one of her hands down to her outer lips before pulling them apart, giving Andy a glimpse at the teenage female's tight opening. He saw her vaginal opening spasm inward, looking tighter than anything he had ever experienced before in his life. All the females he had sex with in the past had experience with sex prior to this, Cammy was the first female that offered him sex that was still inexperienced. He felt his maleness pulse vigorously while precum dribbled from his tip, creating a small damp spot in his pants from where the tip contacted them. "Wow! I never expected that my little sister would look so...sexy!", Andy answered, feeling a bit uncomfortable with his erect penis pushing against the front of his pants, desperately wanting to take them off to set it free. Cammy giggled to Andy's comment and kept her outer lips spread open. "Well, why don't you show me what you have under your pants?", Cammy soon suggested, wanting to see a real kangaroo cock for the first time. Andy couldn't help feeling attracted to Cammy's open invitation. He knew she wanted him, so it was best for Andy to give her what she wanted. Andy took off his shirt to begin with, then removed his pants soon afterward. As he removed his pants, his penis sprang forth out of the hole in the front of his boxers, giving Cammy a glimpse of it. She saw how hard it looked and noticed the little bit of precum dribbling from the tip, showing Andy's arousal. "Oh wow! I never expected you to be this excited to see me!", Cammy exclaimed before Andy took things a bit further and dropped his boxers, allowing Cammy to see all 14-inches of his maleness. Cammy's vaginal hole quivered with excitement as a fresh trickle of her juices left the opening while Cammy moved her hand from her outer lips to her clitoris to rub it a little. "Mmm...you really are my big brother!", Cammy replied in an excited manner, anticipating the feel of Andy's flesh inside her inexperienced folds at any moment. Andy could tell that Cammy was in the mood for sex and didn't waste any time once he was naked. He got onto Cammy's bed, on top of his 'little sister' and let his flesh contact her outer folds for a moment. "I know how you feel, Cammy. When I was around your age, Mom showed me how it was done", Andy told Cammy softly, letting his maleness rub between Cammy's outer lips and clitoris while she relaxed and let her brother do the work for her. His penis felt warm to the young female 'roo, pulsing a little as it touched against her pink pussy lips, dribbling precum down on them and her clit. She liked the feeling of real flesh against her vaginal folds, but she preferred to feel Andy inside her. "Big brother...could you...put it inside me now?", Cammy curiously asked, wanting to sense the real thing in between her legs. Andy nodded and repositioned his maleness so that his tip kissed against Cammy's vaginal opening. "Alright, but I'm going to take things slow to start with. If it becomes too much for you, let me know and I'll ease up", Andy answered back as Cammy held her legs, keeping them spread apart for her 'big brother' as Andy took a deep breath, exhaled, and started to push inside Cammy. Of all the females his penis had gone inside, Cammy's vagina was the tightest. It seemed to hug him firmly as it slowly inched deeper into her reproductive tract, bathed in copious amounts of vaginal juices. His precum launched far from the tip, hitting deep inside Cammy upon entrance, and his flesh pulsed strongly against her walls. "Ahh...Cammy! You're really tight!", Andy exclaimed, enjoying the 'hug' from Cammy's insides as she started to adapt to the new feeling. Fortunately, since the dildo she was using was shaped like Andy's maleness, it wasn't that hard for her to take it. She did gasp briefly upon the initial insertion and when the first spurt of precum hit her insides, but that had more to do with this being her first time with the real thing than it was for any sort of discomfort. Other than that, the young female 'roo moaned softly as she felt Andy move deeper inside, going forth until the tip of his length kissed against Cammy's cervix. About 12 of Andy's 14-inches was inside Cammy, leaving the thickest two inches of his length on the outside. This was as far as Andy was willing to go with Cammy right now. He didn't want to penetrate her cervix, especially during her first time. Perhaps in a few years, once Cammy was a bit older and a bit bigger, he might go that far, but not for a little while. After pushing it in as far as he felt like he could, Andy left it where it was for a moment, feeling Cammy's tightness clamp down firmly around him. "Mmm...are you doing OK so far, Cammy?", he asked curiously, checking up on how she was doing. Her vagina spasmed around him a bit more, coaxing a loud moan from the male 'roo before Cammy answered back. "Mmm...big brother...you feel a lot like that toy Mom gave me that's shaped like Daddy's penis!", Cammy exclaimed, still not knowing the truth about her 'big brother'. Andy wasn't sure if he should tell Cammy that he was her father. On one hand, with his penis now inside her vagina, she might learn the truth on her own. Then again, Andy always treated Cammy like a little sister. He decided to keep it a secret for now, thinking that Cammy didn't need to know the truth about how she was made. "OK Cammy, I'm going to start moving now...like I said before, I'll go slow to start, and you can tell me if you want me to speed up or slow down", Andy explained to Cammy in a calm manner, ready to begin humping her. Cammy understood and got comfortable while Andy took another deep breath and then started to go in and out of Cammy's vaginal passage. He moaned with delight to the feeling of having his shaft massaged by Cammy's folds, feeling a warm sensation caused by their union develop after several moments. Cammy felt this as well, sensing Andy's maleness rub against her insides at a leisurely pace, sensing the pulsations in his length as it did so. More precum launched from Andy's tip as he moved, with some of it getting onto and even seeping through Cammy's cervix. This created a warm and slightly sticky sensation for the inexperienced female. However, this was only a sample of what would come a bit later. "Mmm...big brother...you feel so good inside me!", Cammy exclaimed, enjoying her first sexual experience thus far while Andy placed his hands on Cammy's legs, helping her to keep them spread apart while he moved. The sensation of his maleness getting massaged by Cammy's tight kangaroo pussy made Andy's testicles churn on the inside, preparing a fresh and powerful load of semen to deliver to her. "Mmm...and you feel good to me too, Cammy", Andy answered back, enjoying his experience with her thus far, still humping Cammy at a slow pace, being careful not to give in to his own growing desires. "Do you...want me to...go a little faster?", Andy soon asked, moaning in between the comments, testing the waters to see if Cammy wanted a bit more. Cammy continued to enjoy the rubbing of her 'big brother's' shaft against her tight folds, sensing it throb against her vaginal walls, all while her pores kept the passage nice and wet. "Mmm...yes! Give me more, big brother!", she called out eagerly, wanting to feel a more vigorous massage from Andy's length. With Cammy getting into the experience a bit more, Andy tightened his grip on his 'little sister's' legs and started to thrust at a more rapid pace, fast enough to create a soft squishing noise from where their genitals met. "Ahh...big brother!", Cammy called out excitedly as soon as he increased his speed, with her vaginal walls seeming to contract around his length more frequently, squeezing Andy the tightest near her opening. Andy could feel his length becoming more sensitive to touch as he moved through Cammy's tight hole, making sure to keep his grip on her legs tight so he could have easy access to it. As he did this, Andy couldn't help closing his eyes and thinking about how much he enjoyed what he was doing to Cammy. He could see himself being sexually involved with Cammy for many years to come, forming a relationship with her similar to the one he had with their mother. Part of him even thought about what it would be like to pass on his seed to Cammy in a few years, thinking that she might want to have his kid in the same way their mother wanted him to breed her. Of course, Andy knew he could not impregnate Cammy, the risk of defects due to inbreeding would be far too significant. However, that didn't stop him from thinking about doing it. The more Andy thought about passing his seed onto Cammy, the more excited he became. His maleness thickened inside Cammy's vagina and her hole seemed to tighten around it a bit more. The churning within the kangaroo male's nutsack grew more intense and his balls felt very heavy, in need of a serious draining. Meanwhile, jets of his sticky precum kept hitting Cammy's cervix as he humped her, doing so a bit more often as the entrance to her womb opened a little. Although the chemicals in the yiffberries she took would prevent ovulation, the rest of her reproductive tract was reacting as if she wanted a joey inside her. "Ahh...big brother! Please fill me! I want to feel your semen inside me!", Cammy called out, wishing to be inseminated for the first time in her life as the pores of her vaginal passage suddenly erupted with a warm torrent of vaginal nectar, completely drenching Andy's length and ejecting from her opening as best as it could. Andy responded by giving Cammy everything he had without entering her cervix, humping her at full speed and grabbing her right leg with both arms, hugging it tightly. "Ahh...here it comes, Cammy!", he exclaimed as the churning within his nuts was nearing the breaking point. "Your big brother is about to...show you...how much he...", he continued just before his seed rushed through his long shaft, exploding in a steady stream from his tip. "LOVES YOU-U-U-U!", he called out happily, sending his warm and thick seed deep into Cammy, with just about all of it reaching its intended target. Cammy's vagina contracted as tightly as it possibly could when she felt her brother's semen hit her, sensing the sticky and warm fluid pool inside her uterus. It tingled inside her, filled with billions of little kangaroo 'tadpoles', like the very ones that were injected into Kimberly when Cammy was made. She savored the new sensation, enjoying every moment of it as it seemed that Andy's seed wouldn't stop spurting into her. "Mmm...I love you too, big brother", Cammy softly answered while being inseminated, relaxing while Andy's semen spread throughout her insides, making the pool of his cum grow larger as more entered her womb. Andy and Cammy stayed connected like this through the duration of Andy's orgasm, lasting about a minute or so. By the time he was done, Cammy's uterus was so full of Andy's semen that she had a small belly bulge from the load she received. Andy was a lot more potent now than he was when Cammy was made, and her smaller womb wasn't able to hold as much sperm as his mother's was when they had sex. Of course, with more experience, Cammy's womb would expand a bit, but it would take a little bit of time. Slowly, Andy pulled his shaft out of Cammy's vaginal passage as small amounts of leftover seed trickled from the tip, leaving a small creampie dripping from Cammy's opening when he pulled out. Although he had spent a healthy amount of semen inside Cammy, Andy's shaft remained fully erect and ready for another round. He was tempted to give their mother a turn with it, but wanted to make sure Cammy was satisfied first. "So...how do you feel now, Cammy? Are you happy that you got to have sex with your big brother?", Andy asked in a curious tone, reaching over to the small bulge in his 'little sister's' belly, giving it a playful tickle. "Mmm...yes...I feel much better now! Your cream feels all warm and tingly inside me!", Cammy replied happily, enjoying the sensation that was inside her. Andy kept touching Cammy's belly bulge and smiled. "That's from all the sperm that wants to put a joey inside you. That's why it's important that you should use yiffberries if you're going to have sex without a male using a condom", Andy replied. When Cammy heard Andy's reply, her eyes lit up and she had a thought race through her head. "Can I have a joey with you, big brother?", Cammy asked eagerly, thinking that maybe she could show Andy how much she loved him by having one of his kids. Andy blushed when Cammy told him this and while the offer was somewhat tempting, he knew he couldn't...for more than one reason. "Cammy, you're a pretty young female 'roo, and I do love you. However, we shouldn't breed together", Andy calmly explained. "You see, for one thing, you're only 13. You should really wait until you're older before becoming a mother", Andy continued while Cammy listened and giggled a few moments later. "I didn't mean right now, silly!", Cammy playfully answered, knowing that it was better to wait to have joeys. "I was talking about when I'm ready to have them. Mom suggested that I should wait at least 10 more years before I decide to have joeys", Cammy added. "Can you put a joey inside me when I'm old enough to have one?", Cammy asked once again, still eager to breed with her 'big brother' at a later time. Andy sighed, shook his head, and leaned over to kiss his 'little sister' on the forehead. "Cammy, it's not that simple. You see, we're related to each other by blood. If I were to impregnate you, we could end up creating a joey with serious health problems", Andy explained to Cammy as a thought came to him. "Come to think of it, I should consider myself lucky that nothing bad happened to me when Mom and Bernard made me...or when Mom and I made Cammy", he thought to himself before turning his attention to Cammy again. "Anyway, someday you'll meet a male you like enough to have joeys with on your own, just like how I found your sister-in-law. Until then, we can continue to have sex together if you want it. Just make sure that you keep all this to yourself. No one needs to know what you and I do together whenever I come visit", Andy explained, wanting to make sure Cammy knew not to blab about how he was having sex with a teenage female, even though she was more than willing to accept him. Cammy giggled to her 'big brother's' comment and reached down to his still erect penis, giving it a soft touch with her fingers. "Can we at least pretend that we're making joeys together?", Cammy asked curiously, wanting to at least fantasize about having Andy's sons and daughters. The touch of Cammy's fingers made Andy's maleness twitch anew as the churning sensation returned to his testicles, starting to make a fresh batch of semen for his next orgasm. "Well, as long as you remember your yiffberries, we can do it like that as much as you'd like", Andy replied before he grabbed hold of one of Cammy's legs again and decided to place the tip of his aroused shaft against her vaginal opening again. "In fact, if you'd like some more, I can give you another round right now. I still have plenty more where that came from", Andy playfully told Cammy, making the eager female squeal with delight. "Oh yes! I want more!", Cammy exclaimed, keeping her legs wide open for her 'big brother'. "Put it inside me again, 'big brother'! I want to feel more of your sperm inside me!", she added right before Andy went right back to humping Cammy, mating with her a second time, and delivering a second load of his sperm-filled cream to her reproductive tract. By the time he was done, Cammy felt the tingle of Andy's load throughout her uterus, her cervix, and the vaginal canal. A thick creampie dribbled from Cammy's opening, leaving the female 'roo both tired and very happy. Andy could tell that Cammy needed some rest after their second sexual encounter, so he kissed Cammy on her cheek, covered her with a blanket, and let her sleep while he went to go visit their mother. He didn't even bother to get his clothes on afterwards, though part of that was due to the fact that he was still erect and wanted to go yet again. Sure enough, Andy's maleness went back in the very same vagina he came out of, delivering his third load of the evening to Kimberly's uterus. Once he had finished inseminating his mother, Andy's sex drive finally calmed down and his boner retreated into his sheath. After having sex, in Kimberly's bedroom... Andy and his mother relaxed after their mating, holding hands while lying in bed with the lights in the room turned low. Kimberly felt the tingle of sperm inside her own womb and vagina as a bit of it trickled from her vaginal opening. Andy's third orgasm wasn't as strong as the ones he had with Cammy, but it still gave Kimberly a nice warm feeling inside. The feeling of sperm swimming around in her womb made Kimberly sigh on the inside, knowing that all the life that came forth from Andy's balls was going to waste in a uterus that could no longer bear joeys. If Kimberly's body were capable of reproduction, she would've considered letting Andy impregnate her one last time, hoping to have one more son. Kimberly soon put this thought out of her mind as another one came into it. "So, how did things go with Cammy?", Kimberly asked, wanting to know what their daughter thought about her first time. Andy blushed slightly before he told Kimberly. "Well, Cammy seemed to enjoy it...and it seems like she wants me to have sex with her whenever I come visit", Andy began to explain to Kimberly as the older female 'roo giggled and smooched her son's cheek. "I'm not surprised that Cammy liked it. You've always done a fine job whenever we've had sex together", Kimberly mentioned after the kiss, thinking that Cammy would be in good hands receiving sexual lessons from Andy. "I think she may have enjoyed it a bit too much, though. Because after I had sex with her the first time, Cammy asked me if I could put a joey inside her", Andy explained, feeling a bit sheepish about telling this to his mother. "I told Cammy that we shouldn't breed together, but somehow I can't help thinking that she still wants to", Andy added before Kimberly embraced her son and nuzzled against him. "Honey, I think the reason why Cammy wants you to put a joey in her is the same reason why we made her. She loves you, she wants to have a little piece of you to be a part of her life forever, and by having a joey from your seed she figures she could do that", Kimberly explained. "She'll probably grow out of it once she starts having sex with boys her own age. I'm sure Cammy will find a nice male who she'll want to have joeys with more in the future", Kimberly added before kissing Andy once again, this time on his mouth. "Anyway, let's not worry about that right now, honey. Come over here and snuggle with Momma", Kimberly sweetly coaxed, wanting to share her bed with Andy for the night. Eventually, Andy put the thought about Cammy wanting to breed with him out of his mind and concentrated on his mother. He took Kimberly in his arms, snuggled against her warm body and spent the night resting with her much like a devoted husband would do with his wife. Meanwhile, in Cammy's bedroom, the young female 'roo happily slept, feeling the warmth and ticklish sensation of Andy's sperm actively swimming around inside her. Inside the teenage female's head, she had dreams of her and Andy mating together about 10 years down the road, having his sperm flood into her fertile body and provide her with a joey. She didn't believe that breeding with Andy was 'bad'. She loved him, and she hoped that she would one day get the chance to show how much Andy meant to her. The End...? P.S.: In all likelihood, this will be the last story I produce featuring Andy, Cammy, and Kimberly. I am not going to rule out the possibility of making one more, but if I do it likely won't be for a while.