Penile Expansion Gene Therapy

PUBLIC BETA

Note: You can change font size, font face, and turn on dark mode by clicking the "A" icon tab in the Story Info Box.

You can temporarily switch back to a Classic Literotica® experience during our ongoing public Beta testing. Please consider leaving feedback on issues you experience or suggest improvements.

Click here

"Well you know there is always a chance of something going wrong on brand new therapy procedures, but this program is actually my baby. I have a great deal of confidence that it will work. I am Dr. Shelby by the way." She reached her hand out to shake mine.

So she was a doctor? She didn't look a day over twenty with a baby-faced perfect complexion and an overall youthful glow. Her facial features were small and delicate other than her eyes , which were large, blue, and shown with a bright intensity.

"I know I look too young to be a doctor. That is what everyone says, but I just finished my residency last Spring. I am not that young anyway... I'm 28....still get carded though."

Her slightly longer than shoulder length hair was dishwater blonde (it looked like her natural color) and she had a very pale skin tone. Her face was cute but not quite striking, at least not in the same category as Lauren's was. She also had this sing-songy way of speaking that made you instantly comfortable around her as if she was an old friend.

"Well, you are the 12th person that has applied for the program, so that means it is actually going to happen! You see, we needed at least 12 so that the funding would kick in. I think that warning has scared off everyone else. Before you go, let me ask you one more question. Are you planning to be around here during the winter break.... or are you going home or on vacation or something?"

I honestly had not put too much thought into whether I was staying, but something told me that saying that I was staying was the right thing to do at the moment.

"Staying. Why do you ask?" I answered.

"Oh great! All of the other applicants are on vacation. I am asking because I would love to get started on this as soon as possible. I don't want you to feel like too much of a guinea pig or anything, but there are a couple parts of the program that I am not sure how they will go and I would love try some things out on an individual first so I don't waste the entire group's time."

Like the fine print, her statement at face value did sound kind of scary, but the way she said it was actually very reassuring. I trusted her.

"Sure, we can get started whenever you like," I told her.

"Great, let me set up an appointment for your initial exam and briefing."

She fiddled with some files on her computer then gave me a list of dates and times that were available. I consulted the calendar in my phone and we found one that worked for both of us.

"A couple more things before you go. You are going to need to be completely hairless in your entire pelvic region for the treatment to work effectively. You may want to shave yourself before your appointment. We can do it for you, but it would probably be a little less awkward if you did it. Also, please abstain from ejaculating at least two days prior to your appointment."

Well, I already kept myself clean shaven down there, and since Lauren and I were taking our break, the no cumming part didn't seem like it would be too much of a problem I thought.

With that, Dr. Shelby got up from her desk and walked around it to escort me to the door. For the first time, I how petite she really was. She couldn't have been much more than five feet tall and all of her body parts looked to be significantly smaller than average... that is except for her breasts. They didn't seem to be overly large, but with her otherwise petite frame, one could not help but notice how they added a significant curve to the front of her white lab coat.

"It was a pleasure to meet you Dr. Shelby. I look forward to working with you," I said trying to be as charming a possible.

As we got to the door, she touched my shoulder and said "Likewise. We are going to be working quite a bit together over the next few weeks and I look forward to getting to know you better. I will see you at your appointment."

I smiled back at her. "Sounds good. See you soon."

***

On the day of my appointment, I was kind of a mess. I was nervous, maybe a little horny, and definitely excited. I found myself really looking forward to seeing Dr. Shelby again. Even thought we had only had one brief interaction, she had somehow made me feel better about myself more than just about anyone else in my life recently.

I arrived at the clinic and entered through the same doors as I had previously. Hearing me enter, the doctor emerged from one of the rooms in the back and greeted me warmly. She was again wearing her white lab coat and her hair was up in a kind of clip. Overall, she looked very professional, but also kind of sexy.

"Come on back here. As you can see, since break has officially started now, there is literally no one else in the building right now, so we have all the privacy you want."

She led me back to an examination room and had me sit on one of those cushy exam tables. She stepped over to the computer in the room and began to ask me a series of questions about my medical history. Some were already on the application I filled out, so she was kind of skimming those, but others were new and I answered them the best I could.

She then began to ask me about more personal things.

"How many sexual partners?"

"Actually just one," I said.

"Oh really?" she remarked, sounding impressed. "Male or female?"

"My partner? Female," I said chuckling. "Her name is Lauren," I continued for some reason.

"Must be a lucky girl." Shelby responded. "Are you still sexually active with her?"

"Yes, but she went home for the break, so I won't see her until mid-January."

"Ah... I see. And let me ask you this. What attracted you to this program?"

I then proceeded to tell her a bit of my life history about always considering myself on the small side and how it has caused me to have anxiety and confidence issues for several years. I decided to spare her the sob story about my recent problems with Lauren, only mentioning that I would love to be able to please my girlfriend better.

"Well, you see that is a pretty big problem for many men out there," she said after I had finished my explanation. "Many women say that size doesn't matter, but what they don't understand is that it matters to the guy. Maybe they are OK with their partner having a below average penis size, maybe they even prefer it, but it seems no one wants to consider what the man wants... even when it is their penis."

Wow!... Dr. Shelby had completely summed up my entire conundrum, but in a much more succinct way than I usually thought about it. Even if I believed that Lauren really was OK with my size, I was not fine with it. Was that so bad? Dr. Shelby really understood how I thought.

"Well, I believe that is it for the preliminary questions," she said walking toward me. "Now I am just going to take some vitals and a blood sample before we move on."

She did all the usual things that a doctor does during a checkup.... checked my blood pressure, listened to my heart and breathing, and looked into my ears and throat. But it was much more pleasant that my usual doctor's appointments as Dr. Shelby was extremely pleasant to be around and even more attractive up close. She wore little to no makeup and had this natural glowing beauty to her (Did I mention how great her skin was?). As she touched me, I had the strangest urge to touch her back. Of course that would have been extremely inappropriate, but I almost had the feeling she wouldn't have even minded.

After she took a single vial of blood from my left arm she said, "Alright, if you would not mind, go ahead and take your pants off. I don't think we need to do the whole hospital gown thing, but I do need to examine your pelvic region a bit."

I was now completely up on top of the table and I eagerly slipped my pants and boxers down to my ankles. I was amazed that I felt not even a tiny amount of self consciousness in exposing my tiny penis to this woman. As it came into her view for the first time, she showed no hint of surprise or any reaction whatsoever to its lack of size. Though I was already a little bit stiff, it still of course looked quite small lying against my belly.

"The first thing we need to do is get an accurate measurement," the doctor explained, walking over to one of the drawers in the room. She got out a tube shaped device that looked a lot like a penis pump. "We are going to put this device on your penis and it will expand you to your fullest size, then it will automatically measure your length, girth, and total volume."

She then put on a pair of medical gloves, reached over to the shelf and squirted a small amount of lube into her hand from a pump bottle. She walked over and gently grabbed my dick, smearing the lube all around the base. This felt amazing of course, and Shelby looked up at me smiling. "You really did a great job removing all of your pubic hair. Looks like you are going to be an awesome subject for me," she remarked.

After I was adequately lubed , Dr. Shelby slid the device over my nearly fully erect member. I noticed that the tube was connected to the computer by a cable, probably to send data I surmised. She then flipped a switch on the side of the device and I immediately began to feel a firm suction all around my dick.

Holding it in the proper placed, Dr. Shelby watched as the machine did its job, making my cock fill with even more blood, causing it to grow longer and thicker. It was an intense but overall pleasant feeling, not too unlike Lauren's blowjobs when she sucked pretty hard.

Suddenly, the device let out a soft electronic beep. "You are at your full size now," the doctor explained. "Now it is going to start measuring you."After another series of beeps, the suction completely released, and my dick began to deflate just a little, although I was still quite hard on my own. Looking over at the computer monitor, Dr. Shelby began to read off my official measurements.

"4.3 inches in length." That was longer than I thought it was, but still pretty darn short. "3.6 inches in average shaft circumference. And your total volume is 2.46 fluid ounces. That puts you in about the 4 percentile range in overall size."

"So that means 96% of dudes have a bigger dick than me?" I asked, making sure I understood the stats correctly.

"Yes, that is correct," she said directly, without a hint of judgment.

Wow... I thought to myself. I guess I should feel justified in my lifelong insecurities.

"But if all goes well, these numbers are going to change pretty drastically," she said with an encouraging tone. "That is actually the next thing we need to discuss. Not only can the therapy increase your size in every parameter, but we can target a particular shape if you have something in mind."

"You mean I can make my dick look how ever I want?"

"Well, we might not be able to hit a very specific target, but I think we can get pretty close. Let's talk overall shape first. Would you prefer it to be curved or totally straight?"

I thought for a second. I didn't really want a weirdly asymmetrical dick so I answered "Straight."

"Great. How about the head size? Smaller, the same, or larger than the width of the shaft?"

"Larger, but within reason," I answered quickly. I had always thought dicks with large heads were more aesthetically pleasing and the girls at least in porn seemed to like them as well.

"Good choice. And how about the foreskin? I see that you have been circumcised, but we can restore your foreskin if you would prefer it to look more natural."

This was a decision that I had to think about. I remember Lauren mentioning how she found Jake's uncut cock fun to play with, but was that just because it was different than what she was use to? It seemed most of the time I had heard girls talk about this topic, they had preferred a circumcised dick.

"I am not sure about this one. What do you think?"

"Well, when it comes to the appearance it all comes down to personal preference really," Dr. Shelby answered. "I happen to think both kinds can look very attractive. As for physical pleasure, a circumcised penis will create more friction within a vagina during intercourse, possibly heightening the pleasure for both parties. But an uncircumcised one would likely be more comfortable, especially if the penis is on the larger side."

I was somewhat surprised at the thoroughness of her explanation. It seemed she had put a lot of thought into that topic, a notion that somehow made her even more attractive to me.

"Well, I kind of want to have a pretty big dick, so I guess I will go with uncircumcised if you think it will feel better."

"Another wise choice," she remarked, smiling. "And now we can discuss the size. It seems like it is every man's dream to be able to pick their ideal length and girth, but please think carefully before you select. After undergoing this kind of significant gene therapy, the results may not be reversible."

I sat and thought for several seconds. I did not want to get greedy and have a dick that would cause pain or be freak show, but I definitely wanted something well above average. "Well, first of all... what is normal?" I asked. "Cuz, I have seen many different figures for the average."

"Hold on, let me check this system. The data in here is pulled from several rigorous studies that should provide highly accurate statistics. Here I found it. The normal average is 5.5 inches in length, 4.5 in circumference, and just under five fluid ounces in volume."

"Really?" I questioned. Only a little over an inch longer than me is normal?"

"Yes, but the normal volume is twice yours."

I thought a little more. Considering how Lauren had described Johnny's dick, he had to have been at least seven if not eight inches long. But was that too big? She did say that sex with him could be painful.

Finally I blurted out, "Well, I wasn't going to mention this, but my girlfriend's previous lover had like an eight inch dick, and I kinda want to be up in that range. You're a woman. What do you think? Is that too much?"

"Hmmm... well, I honestly can't answer that," she began hesitantly. "I lack the personal experience. None of my previous partners have been anywhere near that large. Actually, let me look at some numbers really quick."

After typing in a few figures, she looked back at me and said, "It is extremely unlikely that her previous lover truly had an eight inch penis. That would put him in like the 99.9% range. She was probably exaggerating. While a penis that large would likely be aesthetically pleasing, it might not be that practical for intercourse. But again, I can't speak on that subject with certainty."

I thought about her explanation for a few more seconds. "Really, I just want to be big, but not a freak. I don't really know what that cut-off point is."

"Hey, how about this?" Dr. Shelby exclaimed, her face lighting up. "Since as you said right now 96% of men are larger than you, what if we set your numbers so that you would be larger than 96% of other men?"

I nodded in agreement. "That sounds rather poetic. And what would those numbers be?"

After a few more key strokes she proclaimed, "6.7 inches in length, 5.6 inches in circumference and 9.2 fluid ounces in volume. Those figures would put you right at the 96 percentile in all measurements."

I considering the numbers for a second. "Only 6.7 inches?"

"You are focusing on length too much. Volume is what really indicates the total size. 9.2 fl. oz. would give you a penis nearly four times the size of the one you have now."

"Sold!" I exclaimed. "Let's go with that."

"Great," she responded. "As I said, we may not hit those figures precisely, but hopefully it will be close. OK, here is how this is going to work. I am going to feed your blood sample into our DNA editor, along with your shape and size preferences. Overnight, the editor will create a serum that we will be injected into you. The molecules in the serum will attach itself to your DNA and tell your body to begin rapidly multiplying the cells in your penis until they reach the desired growth. We will basically be using your body's natural ability to replicate and produce new cells. We are just providing a new blueprint for one small part of your body." She grinned as she said the word small.

"Overall, there will just be two injections. One we can do tomorrow, and the other two weeks from now. But the tough thing is that your penis will have to be incased in a protective shell while it undergoes its transformation. The injections and subsequent cell growth might cause you some discomfort and I don't want to take any chances. I spent a lot of time engineering a device that you can wear that should do the job perfectly. "

She then reached into one of the small drawers in the room retrieving a tube of what looked like a topical ointment. "Here is another cool thing we have invented lately here at the clinic." She squirted a bit of the cream into her gloved hand and moved back towards my penis. "This cream will prevent any hair growth to any region of your body I apply it to." She then began rubbing it all around my balls, the base of my dick and my whole pelvic region in general as she kept going with her explanation.

"The device will have to maintain a perfect seal to your body for two weeks at a time, so we can't risk your hair growing back in that time. Can you imagine how well this cream will sell once it hits the market?"

After she had adequately rubbed the ointment into my skin, she instructed me to begin putting my clothes back on.

As I dressed, she chuckled softly to herself. "Oh I almost forgot, there's one more thing. You won't have the opportunity to masturbate for the entire duration of the treatment, which will be four weeks in all. I recommend going ahead and enjoying yourself tonight if you know what I mean," she said winking at me."If all goes well, it will be completely worth it and you are going to have quite the surprise for Lauren when she gets back to town in January."

With that, our initial session was complete. I headed home and decided to take Shelby's advice very seriously. I had one of the best masturbation sessions of my life, looking at every kind of pornographic image and video I felt like. I edged for hours and it was amazing. When I finally got tired and decided it was time to end it, I decided to get in bed, turn off all the lights and just fantasize about fucking Lauren with my new "4X as big" cock! I thought about how she would react, how she would lose control, how she would worship my member. But just as I was about to cum, Dr. Shelby's face popped into my head, along with thoughts of her surprisingly ample breasts, stretching the fabric of her lab coat. What would those look like naked? What would my huge cock feel like in between them?

That mental image pushed me over the edge as I literally cried out from the force of the orgasm. Hours of edging made the release so sweet that I wished it could last forever. Though the lights were off, I could feel stream after stream of cum gush out of me. The first shot went straight in the air and landed on my chest, with the next several covering my stomach and finally my pubic area. Afterwards, I cleaned up, took a shower, then returned to bed for the most restful sleep I had gotten in years.

***

The day of my first injection was the first day of the rest of my life. I awoke with a new found confidence and zeal for living. With a bounce in my step, I headed from my parking spot over to the clinic for our 9:00am appointment. This time, Dr. Shelby was waiting for me at the front door. She seemed as eager to get started as I was.

"Come on in!" she greeted me, proceeding to lead me to the same exam room we were in the day before. As we entered, she draped a towel over one of the executive chairs. "Go ahead and take a seat on this towel here. There is really not much to do today since I already thoroughly examined you yesterday. The only thing is that the injection is going to require an erection. Now we could use the suction measuring device again to give you an assist with that, but that uses quite a bit of electricity just to start it up. Do you think you can manage to achieve an erection by yourself?"