(Normal sex) Some form of urethera plug and into her penis

Kelly held an object in her other hand before she stuck it to the wall and she applied some kind of sticky lube to it before sticking Jack to it his back against the object so Jack was looking at the rest of the room and Kelly, her naked form loomed over him speaking " Jackie this version of me made the choice to be a bit more conservative with the changes, I've made it as simple for your brain so you don't have to think to hard about an alien alternate universe version of sex. I kept sex similar to the old reality so your going to go in my penis and end up in your new home, that means your going to live in my balls, yaaaay! Its ok, don't worry we will be in touch in some form or another and you won't be lonely or hungry in there that's for sure." Jack panicked as she stepped over him her gigantic giantess penis looming over. The penis satarted soft but got larger and longer as it got hard, a bead of white pre on the urethra at the tip. He could see her erect penis which appeared to be normal looking and her ball sack was also large with big hefty looking balls no doubt filled with sperm and sissy cell men, people like Jack .

Seeing the approaching giant penis hole and realising that he must have gotten a little smaller again at some point Jack screamed out a last ditch attempt to reason with her "Noooooo Kelly don't do it I don't want to live in your balls, I don't want to know what's in there and I don't want to be eaten by a baby, noooo I don't want to become pregnancy food and die ". He screamed.

Kelly looking down at his tiny body which she had made a bit smaller now " You won't die dumb dumb I made it so you cant die remember haha, plus your going to love your time in my balls I bet, you little sissy submissive cell boy. Oh and I don't know who I'm going to have sex with next and what role I'll be in but I know it will be fun if I get to shoot you in someone.

Jack braced him self looking into the impending doom of a giant female cock hole closing in rapidly, as she pushed her erect penis against him positioning him and the tip of the urethra against him and the object behind before she thrust forwards. Jack was suddenly thrust inside her, her inner penis walls hot, sticky and sucking. He screamed as her insides began clamping down on him slick and wet, he felt himself pulled peeled away from the urethral insertion object as she thrust back and forward and he got bumped in further, then he felt himself seemingly being sucked in deeper inside of her cock, being squeezed threw a tight tubes in her body for time and then eventually falling somehow into some larger containment area with a deep pool of sticky liquid. Regaining his senses he looked around to discover he could to his surprise see rather well and that this place wherever it was was huge either that or he had shrunk more which was also likely a possibility to him. He tried slowly to stand and was able to, the sticky Kelly cum only being waist deep in the area, that's when he noticed the second thing all around this huge area was pairs of little sissy cell people, male like being similar to him all being being annaly fucked by stronger Futanari sperms. These Sperms seemingly having a strange form like humans only they had no head just a sperm head in place and they had a tail flagellum like in shape, they had a stronger larger looking body also human like looking which Kelly had failed to mention and these Futanari sperms overpowering the Male cells which all looked weak and effeminate or rather (masculine?) Jack guessed looking like small submissive femboys. Weirdly these Sissys seemed all too happy to be being engaged from behind, Jack was almost stunned by the sight but he didn't get to take in the view for too long.

Jack found himself suddenly being lifted up, entirely out of out of the semen pool by something that felt like sticky hands which had grabbed at his waist. He didn't know what to do and it all happened so fast before he felt his tight little sissy cell bussy hole being filled by a faceless large Futa sperm and her sperm cock.

Jack felt the strong sperm person dominating his hole which for some reason physically stopped his body from any retaliation, his body felt like it was almost being controlled to go with the flow and the thrusting sperm cock in his ass had made him feel orgasmic in a way he had never felt before. It's trusts inside him almost hypnotic, he felt like his body and mind had been reprogrammed then and there to only want this , to experience this forever for the rest of his life. He was so confused, embarrassed and a little scared as to why he was enjoying this so much all before he felt it share its DNA inside him. Something inside him had changed, like he wasn't human anymore, of course he was this Sissy cell as Kelly had claimed but it was like his body had a purpose and new internal anatomy to fit said purpose. He felt his new insides whatever they were, they were filling up with this sperms DNA it was sharing and Jacks cell body was working overtime for some reason, inside him his new organs whatever they were they felt like to him like they were receiving futa sperm cum in from his butt and then inside feeling it travel threw him his pipes analysing, then in a main organ in his core it began fully processing the DNA's information and then sending signals to a separate set of organs in his balls creating a similar but slightly different DNA from it each time to create into a new sperm baby, rather a new futanari sperm or sissy cell baby of some sort. The process seemed continuous and rather rapid as he could already feel his belly expanding and his balls growing and fizzing.

He felt like he had reached a colossal size the Futa sperm person still plugging his butt and imparting DNA within him before it happened it was a strange sensation, one that should by all means have been extremely painful but for some reason wasn't, it was pleasant, orgasmic and felt like the natural thing to do. Jack felt his new sperm baby's futanari and sissy cells alike suddenly start to escape from his balls moving up and out to be birthed out of his penis. His penis hole had opened wide and was now spewing periodically in a factory line like fashion, growing sperm people in numerous quantity's whilst the other superior Futa sperm person still fucked his sissy cell person anus. His belly had capped out at looing heavily pregnant or inflated at least, his balls had grown massive and he wouldn't be able to walk if he was carrying around these big udders between his legs. Luckily the Futa sperm did all the moving for him and since he was now in a permanent state of euphoria for some reason he wasn't in an place to stop this. His balls fizzed and churned and felt larger sperms and cells rising out pumped out one by one periodically as they rapidly grew and they grew faster outside of his body exposed to Kelly's testicular sperm semen sissy soup which filled what Jack presumed was a testicle? He wasnt sure what was happening anymore, he had lost track of time if there even was time to be kept track of at this point.

Then something happened, everything turned on its side and the pool they were in started to get waves choppy and rhythmic, his sperm superior de-coupled itself from him Jack still full and orgasmically birthing its many tinnier cells and sperms. Before it happened again, the cum pool started to increase in volume rapidly and also started to be thrown around all over the place, Jack finding him self violently thrown around with cum sloshes like waves pulling him at times under water then more times, multiple times as the cum level rose before he was picked up by a strong current and shot upwards out of his current location. he felt himself rapidly sucked into a smaller tube and feeling the current drag him along before being thrown out (and against something?)