The Curse of The Endless Cock

My girlfriend and I have been working on our communication skills. Very important if you want a relationship to succeed. One night after some very satisfying sex (for both of us) we were doing an ASR (After Sex Review). I asked her simply, "What would make it better for you?"

She replied, "Your cock is very long and you use it well. But I'd love to have some more girth."

"So, that's why all your toys are much thicker?"

"Yes, and I love that you are willing to use them with me to make sure I get all my needs met."

"Sounds like you need me to last longer too."

"That would be a plus, but I'm happy with you because you always take care of me even after you cum."

So, my take away from that is I have two opportunities for improvement: girth and endurance. Shouldn't be much of a surprise. Isn't that everyone's problem at the end of the day?

Very long is a relative term. Some feel 5-6 inches is normal and 7 or 8 is long. In my case, very long is about 10 inches. But I'm only about 4 inches around. Long but thin.

Since I always want to improve, I started thinking about how I might accomplish increasing girth. I'm too long for most penis pumps and they don't give lasting results anyway. Not a fan of injections or implants. Penis extenders don't make sense when you're already 10 inches long. What to do, what to do???

While jacking off one day, I realized that once I had a hardon, I could squeeze the bottom 5 inches of my dick and the top 5 inches would swell up significantly. MORE GIRTH!!! I can work with that. But the stretched skin on top becomes much more sensitive which could reduce my endurance. Guess I need to file that away and see if I can find something to compensate.

We have some e-stim toys that I've never really liked that well. At low levels, the tingle is just annoying. At higher levels, it's downright painful, especially in certain places. But I'm an engineer. And experiments are kinda my thing. So, I got out the e-stim toys and worked my self up to the edge. When i was on the verge of losing it, I zapped my dick at a pretty high level. WOWSERS!!! Damn, that hurt. I was no longer on the edge, that's for damn sure. But I was still hard. Several edging cycles later, I had figured out how hard a zap I needed to stop me from cumming. Now I'm on to something.

Here's what I came up with. I got a penis extender. Cut off the bottom 5 inches. It was significantly bigger diameter that I am. I got some light rubber tubing. I plugged one end closed and installed a valve from a basketball in the other end. This allowed me to pump up the pressure in the tubing. It swelled up nicely.

Next, I glued the tubing inside the 5 inch cylinder from the extender. I ran the tubing along the top from the far end to the base. Then, around the base about 1/3 of the way and back to the far end. Next, across to the other side and back down to the bottom. Looking from the end, there's tubing running on top and on both sides slightly below the center. Looks like one of those triangle shaped cock rings. I still had quite a bit of tubing left, so I could wrap that around the base of my cock and balls and snug it down tight.

Gotta check your work as you go, right? I work up a hardon. Lube helps me slide the extender with tubing over my cock. Work it down to the base. Wrap the tail end around my whole package nice and snug.

When I pump up the tubing, I discover that all has worked as planned. The 5 inches of cock beyond the extender swells impressively. The extender with pressurized tubing inside is also swollen larger than my cock. The tight grip on the base of my cock, especially the wraps from side to side, is making it hard to get soft (no pun intended). The business end is very sensitive and with little effort, I find myself on the edge.

I stop.

Then I start a timer. My cock remained hard and throbbing without stimulation for an unbearable amount of time. Seemed like hours, but realistically at least 10 minutes. I spend nearly an hour edging myself. 30 seconds of stimulation and few minutes of hanging on the edge. When I finally finished, the orgasm was very strong.

So, the girth issue seems to be solved, but now I'm so sensitive that I can only take 30 seconds or so of stimulation. That's not going to work for either of us.

On to the next step in the development. I glued some e-stim pads at a few places inside the extender between the tubing. Attached them to a programmable e-stim controller. I can adjust the strength and duration of the pulses. I can also program a delay between pulses with this controller or I can trigger them manually.

Next functional check. Get another hardon. (Us engineers have a tough life, huh?) Mount the extender and pressurize it. One of the benefits of the tubing arrangement was that it pressed the flesh between the tubing up against the e-stim pads, making them more effective. For my first test, I set the strength and duration based on my previous testing. And I put the controller in manual mode, so I could trigger the pulse when I needed one. Using a fleshlight, I bring myself up to my edge as usual. I zap myself, and the edge is gone. I continue to stroke at a steady pace fast enough to make me cum fairly quickly. Each time I approach the edge, I hit the e-stim. This continues for nearly an hour before the batteries on the controller give up.

OMG. I've done it. I'm now able to produce more girth and last an hour. That should be plenty, wouldn't you think?

Nope. As an engineer, it's my duty to overthink everything.

I found a gadget designed to help hikers and campers keep their electronics functional. It uses piezo-electric pads inside your hiking boots to produce a small amount of electricity each step you take. The electricity is sent to a battery pack for storage.

I get one of our medium butt plugs. This one has a simple rod rather than the usual large diameter disk to prevent the plug from getting lost up there. That allows me to mount the two heel pads from the hiking charger back to back on that rod. The end result is that the two pads are stuck between my butt cheeks. So, any time I clench my butt, I generate a little charge. When I'm fucking my girlfriend, I'll be clenching my butt A LOT! I connect the charger system to the controller.

Now for the final test. Hardon. Extender. Pump it up. Set the strength and duration. Set the delay to 30 seconds based on my previous test. I hold the Fleshlight down on the bed and start fucking it. ZAP. it's working. Now to see how long it can last. ZAP. ZAP. ZAP. I'm getting lost in the continuous stimulation of my oversensitive cock.

"SLAVE! YOU MUST OBEY!"

One of our rules between my girlfriend and I is that either of us can claim the Master role at any time using this phrase. I was not expecting her home, but now I'm caught. I cannot lie. I cannot withhold information.

"WHAT THE HELL IS GOING ON HERE?"

"Mistress, your slave has been developing a tool to try to meet your desire for more girth and more endurance."

"And you think practicing on that Fleshlight is going to accomplish that? Tell me the rest of the story right now."

I explain everything about the development. Including the e-stim controller details. I show her my cock with the extender assembly mounted. She is impressed. Even with the shock of her surprise appearance and the lengthy explanation, my cock remains hard.

She immediately commands me to resume fucking the toy while she gets ready to join me. Shower, enema, shave, pick out lingerie,... 30 minutes seems like forever and I'm nearly exhausted. I'm wondering if the charger is working. But when i look at the controller, I see it's still at full charge!!!

When she returns, she experiments with the controller. Strength up and down, then up above my preference. Duration up to see how long I can stand it. Then back where I had it. Then she discovers the random feature and I'm doomed. She sets the delay on random between 10 and 40 seconds and tells me, "Fuck that thing till you cum." Of course, she understands that the purpose of this invention is to keep me hard and prevent me from cumming. I continue until I collapse from exhaustion.

"Hmmm... That is unfortunate. I give you one simple command: Fuck until you cum. And you can't even do that! We'll have to do something about that."

If you've read my previous story "Evil Queen, Pain Slut, Or Switch", you know that my long dick and slender frame enables me to suck myself. My girlfriend decides to use that capability as part of my punishment.

She gets her favorite (largest) strap-on dildo and harness and puts it on. She forces me to lay down on the bed so she can sit on my face. "Lube me up well, slave. Both holes."

She uses her own lubed hands to continue stroking my already overstimulated cock, knowing that the e-stim will keep me from cumming. When she is very wet and has squirted a couple times, she tells me to pull my legs up. She reaches beyond my cock and unceremoniously yanks the butt plug out of my ass.

She adds some more lube to the plug and her ass, and installs the plug. Now, she is in control of whether the e-stim gets charged. And she makes sure it stays fully charged.

My ass is already prepped from the hours of butt plug presence, but her largest dildo is still hard to take. She forces it in with some extra lube and proceed to hammer my prostate. "Suck yourself off."

After nearly another hour of this, the random feature finally waits long enough that I can finish. I don't dare swallow since I'm sure I'll have to prove that I came. I tap out and she stops. She shuts off the e-stim, but leaves the extender in place. She kisses me so that we can share my cum.

When she's done, I'm still hard enough to fuck thanks to the tubing pressure. She mounts me and proceeds to fuck herself to exhaustion using my sore but solid cock.

When she's done, she tells me, "I wanted to surprise you with a threesome, but now I know I'll need more than just two of us to fuck your endless cock properly..."

OMG, what have I done???