Nurse Exam

The Serum

Part 2: Check-Up

[All Characters are 18+ years old]

James was avoiding seeing his neighbor, the nurse, Mrs. Mary Henderson. Ever since she had given him her husband's experimental serum, he had experienced a massive enlargement of his genitals and sexual desire. It had resulted in an awkward experience jacking off for the first time in the shower and ejaculating right when his mom came busting in unexpectedly. Since then he desperately wanted to not have to tell Mary anything about what happened. In fact, after that experience he tried to pretend as if nothing had changed at all, despite the heavy weight he now felt in his trousers, the burning lust to play with his cock and an increasing desire to experience that powerful, hot release again.

It had been nearly a week since he drank the serum when Mary finally caught James as he was coming home from school. She had been standing in the doorway of her house, as if waiting for him.

"Hey James, come here for a minute I want you to come inside so we can talk," she said, barely containing a mischievous grin. He knew he was finally caught and reluctantly walked over to her. "Well, don't look so gloomy, I was hoping you would be feeling a lot better by now. Perhaps something went wrong with the serum. Come back to my exam room and we can make sure you're alright."

As he followed her down the hall, James' mind was racing, trying to figure out how to avoid this awkward situation. There was nothing that she could ask that he would want to talk about and wished he never drank that crazy stuff she gave him. She guided him through the door to her office and then closed it behind them. When the door clicked, James knew there was no way out now.

"So, how are things going?" She asked innocently.

Her scrubs were unbuttoned just enough where he could see the slightest exposure of her cleavage. He stared for a second then caught himself and immediately focused on the carpet at her feet. His mind focused on how her bust filled the blouse out nicely and wondered why he hadn't noticed this the first time he was here. With all these thoughts in his mind, he didn't respond and just stood there uncomfortably, using all his effort just to not to glance again at her chest.

She continued on, "well, you know how I mentioned that what I gave you was experimental? I think it would be important to do a medical check-up on you, just to make sure everything is going fine. Take a seat, it shouldn't take too long," she said and motioned to the exam table.

A medical exam didn't sound like any fun to James, but he couldn't think of a reason not to. Besides, with the resent aching in his genitals, he had actually started to worry that something could actually be wrong. So he agreed and sat on the cold bench, the sterile paper crinkling as he tried to get comfortable. Mary sat down across from him on her office chair and pulled out a clipboard.

"First, let's just get straight about what has been going on, tell me in detail anything new you have experienced since you drank that serum."

She held her pen just above the paper ready to jot down a slew of notes, but James just sat there in silence.

She sighed, "ok, I see, this is going to be hard for you. Let me be specific, have you been masturbating?" She paused and when he was still silent she added, "you know, jacking off, jerking it, wanking it, rubbing one out," she said as she mimicked the motion of stroking a cock in the air in front of him.

Suddenly he vividly remembered how good it had felt to stroke himself while in the hot shower and experiment with his newly enlarged genitals. He started to sweat thinking about that hot build-up right before the release. He couldn't help but imagine his shaft being stroked by her hand. With a surge, his penis begin to swell in his pants.

"Uh, yes Mrs. Henderson. I did...do that...once," he finally stammered.

"Oh ok, well that's a relief. It could be quite a problem if you're not releasing enough with this serum. But only once in the last week? I'm still a little concerned." Then, letting her gaze rest at his crotch for an uncomfortable amount of time she added, "what about size? Any difference in your penis or testicles? Experiencing any pain or discomfort?"

Shifting in his seat James replied, "uh no pain, well a little at first but not since then. And well, yes they have gotten bigger." Then he added with unexpected enthusiasm "a LOT bigger!" And then turned beet red from embarrassment. Mary couldn't help a playful smirk as she jotted some notes.

"Ok then great, thank you James. Now, time for the physical. You can change into a medical gown behind the partition and then come out and have a seat back on the examination table."

James wasn't expecting a full exam but then he hadn't really expected any of this. She was the medical professional after all, so he reluctantly did as he was told and took the gown behind the thin partition in the corner of the room. When he stripped down and put on the gown, he immediately felt embarrassed by how thick his cock had grown when Mary was talking about masturbating. It still hung loosely but it was engorged. Fighting a feeling of panic, he desperately wanted it to calm down and shrink again before coming back out.

"What's taking so long? I hope you're not jerking off back there, you know how inappropriate that would be," she said with mock seriousness.

Succumbing to the situation, he slowly came out, even with his member swollen and showing through the gown. Mary noticeably gulped when she saw it but without a further word, she turned and fumbled through a drawer to pull out her medical devices. She quickly gathered what she needed and then rolled her chair up next to him. To his relief she didn't say anything about. It started to feel like a normal doctor's appointment as Mary focused on taking his blood pressure and looking into his ears and eyes and such. Relieved, he felt the worst of this day might just be almost over.

She finally set aside her equipment but instead of telling him he was done as he hoped, she pulled out a box of latex gloves.

"Ok, now I'll need you to lift up your gown," she said calmly as she proceeded to pull a glove tightly on each hand.

James had been to a doctor when he wanted to play sports in school who had him do this before and felt dumb for assuming she wouldn't. It felt more inappropriate because she was a woman somehow but then he scolded himself for feeling awkward when she was a medical professional. Pulling up the gown, he slowly exposed his giant cock from the swollen head all the way up to the base of his shaft, and his huge ballsack, which poured onto the table.

She was silent as she reached out a gloved hand out and placed it under his shaft, then used the other hand to gently lift and cradle his balls. His penis was so long and plump it draped over her hand as she held it up. Feeling the warm and smooth sensation of her touch, he felt his dick starting to throb and grow.

Please don't get hard like in the shower! He prayed to himself.

After telling him to cough and weighing his balls she finally released his genitals and thankfully became preoccupied with taking notes. She didn't seem to notice that his cock was still growing harder and thicker with every pulse. Then, she pulled out a measuring tape and casually pulled the tip of his cock taught and measured the length from base to tip and then wrapped the tape measure around the shaft to measure his girth. As she did this he couldn't help a quiet, involuntary moan and feel his dick lift up.

"Ok looking good James. Looking really good," she finally said, playfully raising her eyebrows. "Looks like we're just about done here."

He sighed out of relief and started to pull down his gown, hoping to cover it before it became fully erect and completely embarrass him.

"For the last test, I'll just need a semen sample," she deadpaned as she pulled out a small plastic cup from her desk. "In here please."

James nearly choked. There he was, his swollen genitals still half exposed and the beautiful woman holding a cup expectantly for him to jack off into when he only had ever done that once before in his life. Really starting to panic all over again, he looked around "um, where should I go Mrs. Henderson?"

"Right here is fine, I should observe and take notes on your method." She paused, "you do know how to masturbate don't you?"

He turned red again and fumbled with his words, "well, I mean I did it once."

"I see, well there is a lot more of a technique than you might realize. It's not just about beating your meat until you squirt, you want to really...milk the experience in order to release the most semen out as possible each time. I can guide you through some techniques, but first, show me what you did the first time."

Reluctantly he used his right hand to grip the base of his now rigid shaft and looked at her one more time to make sure she was serious. She had her notepad out and was watching him intently, so he started to move the skin up and down. The first stroke of his hand was all that was needed for his cock to give one giant pulse and become completely stiff. She continued to observe as he slowly stroked his now fully hardened erection. "And that's it?" She finally said.

To his relief he stopped, feeling very self-conscious.

"Well I touched the tip once and then started to go faster right before...you know."

"You ejaculated your semen? It's ok, we're adults, why don't you say it?"

"Ok sure, yeah, right before I... ejaculated," he said softly.

Mary seemed to shiver slightly when he said the word.

"Well that will get the job done. But here, try something like this..." she said and then squirted a clear gel onto her gloved hand. Sticky clicking sounds came from her hands as she rubbed them together for a moment. Gently, she then started to rub the tip of his cock with one hand. She couldn't help notice that it almost took up her whole palm.

My god, it's like a horse's cock! What have I done?! She thought to herself as she then gripped it and rotated her grasp in one direction then the other. James watched her, both of his hands now gripping the edge of his seat and his eyes wide, staring at his rock hard cock as it was protruding towards her and being massaged by she sticky gloved hand. The sensation pulled his cock so hard it was almost painful. Her hand still wrapped around the tip she took a long and slow stroke all the way to the base of his shaft. He moaned out loud uncontrollably. Using her free hand to then cup his heavy testicles, she gently massaging them. She gilded the hand on his cock slowly back up to the tip and massaged it some more before repeating the sequence a few times. His mind was going crazy and his breathing quickened. He felt as if his whole penis was starting to burn with hot magma that needed to be released. Right then she stopped, "ok now you try".

Without thinking, he then greedily put both of his hands around his massive dick, one at the base and the other right above it, and then slowly started to copy her method. Slowly moving his hands up to the tip and then rubbing it a little before sliding his hands all the way back down.

"That's a good boy, now a little faster. Just keep jerking that cock for your nurse and get me a nice healthy sperm sample." She smiled and then continued to coach him, "up and down, rub the tip, and then move a little faster. Oh, good, you see that clear fluid that just dripped out? That's pre-ejaculate. That means you're getting close to orgasm. So now tell me, what did you think about right when you shot your load out last time?"

Hardly being able to think straight now, he still found himself a little hesitant to tell her. Was it embarrassing for him to admit that he released himself to his teacher's boobs?

"Tell me or I won't let you finish," she taunted.

"My math teacher," he finally said closing his eyes, visualizing his busty teacher in between strokes.

"And why her, what about her turned you on when you thought about her?"

Still stroking up and down, more pre-ejaculate dripped down his shaft and over his knuckles. "Her breasts. They were so...big."

"Ah a tits guy, that makes this easy. Well, I don't think you would say I have giant breasts but how about looking at these D cups to help you drain your balls completely?" She slowly unbuttoned her blouse until she exposed her bra and then casually pulled out both her tits, one at a time. They were firm and big, with soft pink nipples protruding out. He looked at them with wide eyes, and beat his cock even faster, not believing what he was seeing or how badly it made his cock ache. Seeing his reaction she laughed and pushed them together with her arms, which made them seem extra plump. "Now jerk that sperm sample out for me," she said excitedly as she held out the cup under the tip of his cock.

He could hardly focus on what was happening as he looked once more at her huge tits bursting out at him and then felt the tip of his cock tingle as he rubbed it. His eyes rolled back for a moment as a glob of hot, pure white goop bubbled out from his dick into the cup.

"Oh god, wow that's thick!" She said with surprise.

Then another glob drained out, plopping half in the cup and partially dribbling down the side and over Mary's gloved fingers. James had only seen ejaculate once before in the shower but had been in such shock he hadn't really noticed what had even happened. It was strange to see this white fluid coming out of his penis but it felt so good that he just stared at the tip of his swollen purple cock as it dripped and then stroked even deeper.

"Ok thank you. You can stop now, I think I have plenty to work with."

But as he looked at her protruding breasts he felt an uncontrollable desire to frantically beat his dick harder. Then suddenly he felt his entire groin convulse. He didn't know what was happening but his cock felt like it was going to completely explode. His breathing suddenly became haggard and his cock became unbearably stiff and then tightened.

"Uh, James are you alright?"

"Ohhh nooo!" he couldn't help shouting out in the intensity of the sensation as his dick suddenly squirted out a massive stream of cum right over the cup hitting Mary across her breasts, nearly covering them both of them in one shot. She gasped and he watched in horror as another stream shot right into her mouth. She spat it out instinctively making it pour from mouth and drip down her chin to her already sticky breasts. Watching almost helplessly he worked his aching cock as another stream flew through the air and landed directly over her shocked face, covering from the top of her forehead down between her eyes all the way to her chin. Somehow each stroke felt even more pleasurable than the last as his jizz continued to unload all over her again and again.

After what felt like hours it finally started to slow down and then stop with one last pulse and leek. He sat there panting for some time before he finally started to come back to his senses.

"I'm so so sorry Mrs. Henderson! I just...I don't know what happened!"

Her face and breasts were now completely dripping with his cum, and semen drenched her clothes. Her face still frozen with a look of complete shock, and still holding a now completely overflowing cup of sperm, she finally found her words again."Well that was quite a build-up James." Seeming to not know what to do, she finally reached over and with a dripping glove, picked up a lid to it and pressed it on the cup, only making a glob of his sperm pour out of it onto her lap. She then pealed off the gloves and dropped them with in the trash and reached for a box of tissues. Starting to wipe the ejaculate from her face she added, "this serum is supposed to only get stronger over time. I have a feeling we're going to have to be doing more research. Until then I don't want you holding in your semen for too long so I want you to keep jerking out that cock of yours whenever you feel the slightest urge. Can you do that for me?"

"Ok Mrs. Henderson. I'll do it as much as I can. For you," he said and then quickly put in his clothes as she continued to wipe herself off with tissue.

Completely mortified about what had happened he ran out of there without another word and went home as quickly as he could. As soon as he got back to his room he shut the door and locked it behind him. He felt so bad about what happened but guiltily couldn't help also think about how amazing that had felt. Feeling his cock throb at the memory he remembered his promise to her to masturbate whenever he had the slightest urge. He laid in his bed and pulled down his pants to practice the masturbation technique she had shown him. As he stroked faster and faster he thought of what Mrs. Henderson had looked like with her face and tits splattered with his jizz. It wasn't long until he released another fat load, which squirted all over his chest before he could even think to take his shirt off.

Throwing his spunk covered clothes in the laundry basket, he wondered what was going to happen if he needed to keep releasing himself over and over again like this like she suggested. It was such a hassle to manage all this semen, but after knowing how good it could feel he knew he wasn't going to be able to stop. He just prayed that she was wrong about the effects of this serum getting stronger over time.