The fifth of five suggested drawings from SPARTAHHH on Deviantart, in the comments of an image that was taken down. This “going to full capacity” thing isn’t totally unprecedented- you might have even seen an early attempt at me writing this kind of thing in Nathan’s Trial. Which… I kind of want to redo and allow him to get to his full size. I can’t remember how big he ended up getting in the story, but considering that he fit inside a bathtub right near the end… I don’t think I was doing him justice.

Now more familiar with Nathan’s final sizes, I’d start off having Nathan in college running across a drug trial over spring break, looking to wrangle a few hapless college students who are looking for a few spare bucks. He signs up to participate in general, but he gets flagged for one of the trials in particular, on the orders of the head of the experiments herself.

On the first day of the trials, the students were broken up into their different trial groups. Nathan found that he was placed in an all-male group and out of the eighteen people there, three were subhypers- given that you’d expect to need seventy people to find those three, he quickly felt that something was up.

His gut feeling was confirmed a few minutes later when the project lead, some scientist named June, introduced the project and its stated goals in no uncertain terms: she thinks she’s come up with a new drug that should inhibit erections and everyone in the sorry lot in front of her that wanted a neat payout now can’t masturbate for the next few days. Apparently, she wants to test the drug through the whole gamut- from empty to full, she wants to ensure that this drug will work as advertised, come hell or high water.

As all the men there slowly recognize what they’ll be going through to get their payout, she quickly goes over the other pertinent information for the trial- when they’ll need to take the drugs, where they’ll be housed temporarily (partway across the city), and other less important things like methodologies and measured outcomes. As the talk wraps up, June mentions where the buses are that will bring them to the testing/housing area and points out that they’re getting free housing and food for the duration, so there better be minimal whining.

The rest of the day was spent getting everyone settled in to their housing for the duration of the test. Nathan, and the other three subhypers, were each assigned their own room, while every other participant got paired up. Everyone was mentally preparing themselves for the upcoming trial- for male college students with little to do who are all contractually obligated (to get a full payout) to abstain from masturbation, a whole week is an eternity. Few were dreading the upcoming ordeal more than the four most well-endowed.

Nathan took the chance to get to know the three subhypers and commiserate with them, as much as he could. One wasn’t all that friendly, but the other two, Jacob and Tristan, were willing to talk and air their anxieties, mostly about keeping themselves sane for the whole duration.

The next morning, each participant was told to jack off and then report to receive the medication. Every eight hours until the trial ended, they were supposed to report how they were feeling, then receive the next dose of anaphodesiacs and a reminder that they can literally just walk away from the experiment whenever they want. The first day was fine for basically everyone. A few people organized some events to keep everyone occupied, busy, and mostly sane. Nathan, Jacob, and Tristan were none the worse for wear.

For everyone else, day two was more of the same, though many were frustrated that there were a few notable sitouts for the volleyball game. Jacob and Tristan each had an oversized bulky bulge in front of them, but Nathan looked like he might get a risky injury if he dived for the ball, not to mention that he was having to turn sideways to fit through a doorway and had to start wearing improvised clothing for his new sizes. As embarrassing as it was to wear the better part of a tent, at least he could keep his dignity. Ending up with balls over two feet wide at the end of the day was not an auspicious portent.

Day three is when a number of problems struck. After a large lunch to meet the needs of the incessant factories that were his nuts and an hour or two to let them churn, he had to call Jacob and Tristan over to help him with his sudden mobility issues. Once they got him free of the doorway and out of the way, Jacob ran off to find June. Five minutes later, June showed up with what looked like an industrial hammock and, supervising a few volunteers, loaded Nathan up and got him moved back to his room.

He didn’t need the reminder why he was assigned the largest room.

Day four was almost a reprieve for Nathan. He at least didn’t have to lug everything around, but now he was basically anchored in one place, unable to really sit down in any way. He could rest his legs by leaning forward onto the warm bed of… himself, but that was about it. It was mildly disconcerting to realize that when he was doing that, he was effectively, and imperceptibly, being pushed higher up into the air by sheer sexual force.

In hindsight, this would be the moment that he would keep fantasizing back to.

Day five. Nathan had long ago passed his previous largest size and it seriously worried him both how big his balls were and how aggressively they continued to bloat. Props to June, though, that her miracle medicine kept the tide of cum at bay. He did wonder, however, if this was a good thing in this situation. Every additional hour meant the resulting mess would be that much bigger.

The other, less obvious, problem was that while the medication prevented erections and ejaculations, it didn’t stop arousal. As he felt the inevitable inch closer and closer, arousal and desire more readily burned through his body. Sure, there was no erection and not a drop leaked out of his cock, but it did nothing to keep his balls from churning out more and more cum.

After he delivered the 2pm afternoon report, he was surprised to find that June had no more medication for him. She briefly explained that she’s gotten enough data from the experiment, and that pushing him any further would flatly be torturous malpractice. She explained that she was happy to give him his money, let him empty himself on his own time, and then bring him back to the campus, but she’d always been curious about male hypers of his size. She offered to double his payout on the spot if he allowed her to take various recordings and observations of the ejaculation process at this scale. He ultimately agreed.

June ran off and returned with the pertinent equipment, setting up a dozen or so small devices to capture whatever data she saw important. All the while, Nathan could feel the effects of the medication fade away and felt his simmering arousal begin to grip his body. Inch by inch, he felt his cock began to inflate and harden, gradually but inextricably. He felt himself releasing precum, mostly as drops, but increasingly as streams. Release was coming, but only when it was good and ready.

After a few agonizing hours, he started to feel something odd. A couple alarms on June’s devices started beeping, pulling the scientist from her reading to dive behind her waterproof barrier. He could feel his body preparing itself, rhythmic pulses that grew stronger with every repetition. It felt like an orgasm, but nothing was coming out. Yet, he reminded himself. He looked at his fully erect cock and overbearingly full balls in worry. He knew how bad his daily sessions could get, how bad was this going to be…?

The dry pulses were getting stronger, and he swore he was starting to feel a kind of pleasure beneath it all. Was he going to be-?

One, then two small spurts of cum shot out of the end of Nathan’s dick. Then a solid rope of cum splattered against the far wall. Then a second made him double over in pleasure. The third, then the fourth, then the fifth melted his brain in pleasure. His body was desperately firing every drop of cum it had down the massive cock- his massive cock- that rose past his head. Drunken with ecstasy, he began rubbing and stroking every sensitive bit he could reach, begging his body to shoot more, faster, harder.

The minutes passed by in a blur. He came to every time he started flagging just to work himself back up to his orgasmic frenzy. With every single drop of cum that left his body, he felt the pressure drop, but it wasn’t going fast enough! He wanted, needed to cum, cum, cum!

When he finally came to, collapsed backwards onto the floor as his dick, laying across his chest, shot a few last ropes before finally falling silent. He slowly came to his senses, realizing he was coated and laying in something warm- it took a few moments longer than it should have to realize he was covered in countless ropes of his spunk, not to mention–

He looked around the room and took in the devastation. The fifteen-foot square room was three inches deep in cum, jizz was splattered all over one wall and dripping from the ceiling…

June walked up to him, handing him a towel and thanking him for the participation. She said that the shower was waiting for him with his clothes and that the cleaning crew would start while he showered. After shuffling to the bathroom and thoroughly washing himself clean, he threw on the new set of clothes and went back to the room, mildly concerned about how much white gunk had seeped under the door.

He walked past the cleaning crew, garnering a few disbelieving and half-shellshocked stares before entering the hallway, stepping over a small barrier that kept the mess contained. He began his walk of shame out of the building, past all the other men who were still undergoing the trial and who potentially, he suddenly realized, might have potentially heard everything that happened in his room. Avoiding looking anyone in the eyes, he left the building they’d been in for the past few days and plopped himself down in the car that would take him back to campus.

To his chagrin, June was in there as well and kept asking him to consider being a guinea pig for all number of other experiments the whole ride back…

And that’s a wrap! Thanks for being patient with and tolerating this experiment! I hope you all enjoyed the journey through the max sizes of the Hyper Support Group! You can find Gabriel’s image here, John’s image here, Devon’s image here, and Aaron’s image here!

Secret? What secret?