Isaac lay on his bed. He was fully erect, jerking off, but couldn't seem to finish. All he could think about how good it felt to fuck that woman in his home before he came here. Those few minutes kept playing over and over as hen rode the edge of ecstasy. Why couldn't he cum? His left arm dropped to his side, completely spent. His right arm was the same way. He whined. So close yet impossibly far away. His turgid tower pulsing over him. This was unfair. First, he gets this huge dick and balls that just don't want to fit into normal clothes. Then, he basically agrees to be kidnapped to be a lab rat. And now, he can't even jerk off. He didn't think he'd miss almost cumming from just getting hard, but now he did. Isaac almost fell off the bed as the door suddenly opened.
"Good evening Isaac, already trying to keep us on our toes, hm?" A familiar voice asked as a figure strode into the room, pulling a small cart along with them. "Didn't even bother to attach the suction hose first." they remarked. Isaac looked over at the figure, they were tall, a pretty slim, though that was all he could tell as they were wearing some kind of what he guessed was a biohazard suit.
"Who are you?" Isaac went to pull his blanket over himself, but decided against it.
"Oh, of course you don't recognize me, it's Bethany. Er, Dr. Ivers. We met your house, I'm sure you recall." they spoke in a manner as sterile as their clothing.
"Yes, I remember."
"Right, now what seems to be the problem?" Ivers scribbled on an odd-looking clipboard.
"Well, considering you're already dressed like that I'm sure you already know." Isaac gestured at her get up.
"Yes, you can't cum, but I was just trying to be nice. We don't have to be enemies." Ivers scribbled some more.
"Doesn't mean we have to be friends either." Isaac sat up.
"So adversarial, defensive... pent up." Ivers wrote down some more, "But I am your Doctor, for now, so I would like to help you, if you'll let me."
"Alright, well, you brought that woman for me to fuck and now I can't cum." Isaac drew a correlation
"Interesting, but correlation is not causation." Ivers quipped, "But that makes sense, your condition is pretty unique."
"What, this isn't the intended outcome?" Isaac gestured at his groin.
"Surprisingly, no. It may also surprise you to learn that you didn't have the recommended dose; and that we thought the amount we speculated you to have ingested would kill a person." she paused. "So, you know, it's good you didn't die."
"What's a normal dose? What does it do?" Isaac uncrossed his arms, genuinely curious.
"Normally, it's a short-term fertility drug for struggling couples. It's effects only last a few hours under optimal conditions." Ivers explained, vaguely gesturing like they were pregnant, "And yours has lasted about 48 hours now, with no signs of reverting back.
"Hm, not bad." Isaac replied, having forgotten completely about his own problem, "but how does that help me?"
"Well, knowing more about what's going on with your body can't hurt. So, my real reason for coming here." Ivers picked up a squeeze bottle from the cart, "You need help. I've hypothesized that now that you've had a taste of what your body wants, it won't settle for just you."
"Is that... lube?" Isaac asked, suddenly very aware of how aroused he was feeling.
"Yes it is." Ivers replied
"And the suit is so you don't get.. 'exposed'?" Isaac made air quotes around the last word
"Also yes." Ivers stepped close, "If you'll let me. Help you out, that is, I don't want to be exposed." she clarified.
"Please! I can't feel my arms anymore." Isaac laid back on the bed and smiled
"Good, we've been needing a sample." Ivers went and got the suction hose, fitting it to the head of Isaac's cock, "We'll have to get a bigger nozzle..." she mused as it activated.
"Oh!" Isaac gasped
"Now, Isaac, are you comfortable?"
"Yea."
"Would it be okay if I had you say 'Yes, Doctor.'?"
"Yes Doctor." Isaac replied with a smile.
"Do you feel good?" Ivers applied lube to his cock and began rubbing it
"Yes, Doctor." Isaac moaned as Bethany's hands easily slid up and down his girth, it felt so amazing.
"Good, I want you to feel good, Isaac, so just lay back and let me help you feel good." she purred. I did as he was told and moaned loudly, letting all of his lust out as his cock began pouring precum into the suction nozzle. "Very Good, Isaac. I want you cum as much as you can."
"Yes Doctor!" Isaac grunted as he began cumming. Bethany continued to milk his orgasm for as long as it continued.
"Very good, Isaac." Ivers said. She took off her gloves and put on a fresh pair, then tapped away on a tablet. "Ten gallons!" she almost moaned, "Much more than expected, but we didn't expect that much." she wrote some more things down on her clipboard as she observed him. "Still hard?"
"Yea-- Yes Doctor." Isaac replied, he was sure Bethany was smiling.
"Well then, let's get that taken care of." Bethany quickly wrapped her hands around his cock again and started working it, applying a bit more lube and quickly coaxing a second orgasm from Isaac. "Very good." she cooed. She changed gloves again and checked her tablet.