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Trevor was a young teen and part of a mostly normal family of white bunnies. But recently he had discovered his sexual desires for his on sister who wasn't even a year old at that point. Giving into lust he had made and executed plans to take her body for himself, but after he was done violating the toddler he fell asleep. Which turned out to be a big mistake as his mother had found the pair still stuck together, screaming her lungs out.
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Trevor's ears were ringing as the veil of drowsiness quickly vanished as he was woken up. Worries about what he should do rushed in his mind. He had never expected this situation, but now that his mother had found out. Luckily for him fate intervened and took care of that problem at least temporarily for him. He could only stare in disbelief, as his mother suddenly stopped screaming, sank to her knees and then fell over, lying motionless on the floor with a blank expression on her face. 
It took a moment for his mind to process what was happening, not sure what just happened, unsure if this wasn't just some dream. His mother had passed out from shock as she had to witness something unimaginably cruel being done to her baby girl and from no other but her own son.
Trevor was overwhelmed with the situation, unable to decide what he could possibly do to get out of this mess. After what felt like hours his first conscious decision he was able to make, was to remove his sister from his now limp cock. On her face was a familiar blank expression, looking very similar to her mothers face. 
For a moment he felt as if his stomach was sinking, worried that both may have died, but after a quick check he found them both still breathing. Now that this troubling thought was calmed and put aside his mind began racing again trying to find ways to solve his problem. His mother had found him balls deep inside his sister raping her immature body and even without her reaction he knew she wouldn't be too happy about this situation.
While he was working on finding a solution, there suddenly was a different thought that led him astray and excited him more than it should, especially in a situation like this. His mother was just laying there unconscious and defenseless, her mind being as blank as the look in her eyes, unable to do anything to stop him from whatever he wanted to do to her. Trevors massive oversized cock, which moments before was limp from shock and distress, was quickly hardening again the more he thought about what exactly he could do to her.


As he began to think more and more with his dick once again, his perversion pushed any rational thought from his mind, as he saw another opportunity to satisfy his ever growing lust. The room was already heavy with his musk and the smell of sex, but as his cock began leaking copious amounts of pre again, the air seemed to grow even more dense with his scent. 
The certainty that his life would be over anyway when his mother woke up, assured him that he should use this small chance to have some fun while he still could. So without any hesitation he lifted her body up and onto his bed, where he quickly began tearing through her clothes, leaving scratches on her body.
When she was finally exposed he was surprised to find that her naked body wasn't exciting him. Especially not as much as his sister's young and immature body did. However the thought of having his way with his own mother against her will did and was keeping his dick more than hard enough to give her a rough pounding. 
However for normal standards her body was still very attractive, she was only a few years past her prime, having had children at a young age. Her round curves and an impressive rack fitted to her chest helped to forget the few blemishes time had left her with. Her luscious bosom was drawing in Trevor's eyes ever since he removed her bra. 
So once he was done removing her other clothing he quickly began to play with his mothers boobs. Since his sister did not have any womanly features besides her immature cunt and slight facial features, he was looking forward to exploring his mothers maturity, expecting it to be another experience entirely.
However, even when he tried everything he could think of, sucking on his mothers nipples, squeezing her boobs or rubbing her ass, he couldn't find the same excitement his sister's had given him. He was almost about to stop himself entirely looking back at his sister, eager to get some use out of her, but then the realization hit him. Even if her body wasn't exciting him, his mother could give him something he wanted more than her body, she could birth more children to have his way with. Pushing aside the troubling thought of all the consequences of his actions once again, sure he would find some way to fix them later. 
Unable to find anything else to keep him occupied but impregnating his mother, he decided to get this going and began pushing his throbbing tip against her entrance. Trying to force it inside her pussy was almost as hard as his first time with his sister was, since his massive size was making the difference in their size almost irrelevant.
Just like with his sister he didn't care if he hurt her at this point, so he kept pushing and thrusting as hard as he could, until the big tip of his pulsing cock finally went inside with a satisfying wet slurping sound. For him her tunnel felt just as tight as her daughters, but even that didn't make it feel as amazing and exhilarating as the times with his sister. 
But it didn't have to since she had another use to him now so he kept ramming and pushing his fuckrod even deeper, his aim to fill her up quickly instead of savoring it. This was making his movements even more reckless and much more forceful than before, forcing her walls apart and to stretch around his immense cock. Even with an adult body around his cock it was still large enough to deform and shape her belly in its shape as he made his way even further.
He noticed too late that the pain from the penetration had woken her up, her eyes staring in horror back at him. For a second he paused, preparing for a deafening scream and unsure of what to do, but he couldn't go back now. So when the moment passed and nothing happened he took the assault on her innards back up. 
After some more fucking he, something strange happened as saw something change in the look of her eyes. At first he had thought he was imagining it, but after some time he was sure he saw pleasure creeping in her eyes and decided to try if he could use it to his advantage. To see if he was correct he slowly began to pull out his dick, watching his mothers lust filled eyes turn to desperation as she fought herself back from begging him to keep going, disturbed at the realization what that meant for her.
"Mhm guess I am not the only pervert in the family~ Enjoying your own son's massive dick more than we should, ey?"
Her face contorted to something else, showing her shock and horror as she realized that he had noticed, realizing he was now in control of her. She opened her mouth wanting to object, but the feeling of his big veiny dick suddenly being rammed back inside made her moan instead.
"Don't you worry I won't tell dad if you keep my playtime with my sister as well."
Anger flashed through her eyes as she was reminded of what he had done to her precious daughter. Once more she wanted to speak up and berate him for his actions, but she couldn't as fear that he might stop fucking her began taking control. She was breaking not only physically but also mentally as a result of the assault of such an impressive tool. Trevor was getting a new rush of excitement as he was realizing how much power he had over his mother now. 


This show of strength continued for some time, no longer having the pure aim of breeding and punishing her for what she would do once stopped, but breaking her and forming her to his will. Somehow she kept up a front for some time trying to deny what was happening in her mind, even when it was thin and easily seen through by her son, but at the end she had given up and was begging him to fuck her harder and put more babies inside her belly. Even when she was fully aware of what would happen to them if she did have his children, she was unable to deny the need for his dick to satisfy her desires.
Eventually he filled her up with his hot cum, which started flooding out in a big stream that quickly inflated her belly and filled her womb. Trevor was left with a babbling mess of a mother only calling his name and begging for more. But he didn't plan on giving her what she wanted, he did his part and was sure she would give him some nice siblings to play with.
When he pulled his dick out from her pussy, leaving the copious amounts of cum to flow out, his gaze wandered over to his sister who also seemed to have regained her consciousness. His massive tool fought to get a break, but just seeing her naked form lying there made it swell with desire once more. He knew it wouldn't be long until his dad would come back home so he needed to act quick.
Trevor grabbed his sister by the ankles and roughly pulled her up to his cock. She immediately began screaming and crying in pain as she once more felt a dick of such size almost tear her apart. He looked at his mother to gauge her reaction, scared this might bring her back to her senses, but to his surprise her hand had already moved down to pleasure herself. So he kept going, giving his mother a premium view of her tiny daughter getting spread around his shaft and fucked senseless.


It was at this moment that his father had rushed to the door, hearing his little scream in agony, forcing him to witness what his wife had seen when she had gotten home to check on them. Only now his own wife sat there masturbating to the scene, moaning and encouraging their son to fuck her even harder. He couldn't comprehend how or why this was happening, especially not how he had missed the giant dick his son had grown or how it could fit inside a toddler.
Watching what was happening before his eyes his body filled with rage, but before he could act upon it he felt something stir inside his pants. He ignored his anger for a moment to watch it just a little longer, long enough for his wife to notice him and open her mouth to speak.
"Come join us darling and watch him play with our daughter~"
He couldn't believe his eyes so he concluded that it must have been a dream and got closer to his wife. His pants slowly being undone by his hands, when he was in front of his wife, his cock was freed and pointing at her. Driven by disbelief he was about to bend her over trying to ignore the smell of his son overpowering his senses, but she pushed a hand against his belly to stop him.
"Sorry hun but you can't I need to bear his children he put inside me~"
Reality hit him hard in that moment and he stumbled back, tripping over his half undone pants, anger showing on his face once more. He hurried to get back up and put his pants back on, a challenge with his hard cock being in the way, clearly betraying his own feelings. He was about to throw his fists at his own son, but when he stared into his wife's eyes he could sense he wouldn't get her back. He gathered his senses and decided his only option was to leave them be, gathering his belongings in the house he packed up as he could still smell and hear what they were doing.
He gave into desperation one last time, going back to the room hoping none of this was real. But instead he was just in time to watch his son fill his daughter, he was shocked at how fast her belly began to swell with cum. Not only the speed but the amount was insane as her belly kept growing further and further, until it was almost twice the size of the rest of her body. He felt his dick react to the scene again, but he knew even if he would give in he wouldn't get what he wanted, being only a cock to watch as his son fucked his wife and daughter in front of him. So at the end he left them without another word, his bags packed with his belongings ready to bever return.


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It had been a few years after those events, Trevor's father was gone for good, there were a few attempts from him to get his wife back, but she simply rejected him describing how much better Trevor was in bed. At this point he had bred a full harem of toddlers and small children for him, being both his children and siblings, most gaping and filled with cum whenever possible. His mother had a new companion as well, having birthed a boy with a similarly sized cock as Trevor's massive tool, who now kept her filled when he didn't need or want to breed her to grow his harem even further.
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