It had been about two months since Jim McKenna, mild mannered pharmaceutical salesman for Tri State Drugs, enjoyed the penultimate experience of his life. Yes, he had been a willing participant in a study conducted by The Regional Center for Human Medical Research. It was a study dealing with male sexual response, the production and ejaculation of seminal fluid and penis growth. He agreed to participate in the study after responding to an advertisement inviting him to call The Center and earn the big bucks by agreeing to become a sexual guinea pig. After spending three days taking some secret potion and allowing technicians to prod, stimulate, suck, fuck and cause his cock to fire he earned a ton of money (paid in cash), saw his penis actually shoot its load over thirty feet (and continue firing for almost three minutes) and, best of all grow to gargantuan size. Yes, humongous. When Jim began the study, his penis was a pretty normal seven inches at full stimulation and about four inches in thickness. Now, he was every bit of ten inches and almost seven inches in circumference. Yes, it’s hard to believe that a 5’ 11” male weighing 175 lbs. would be that big but he saw his cock grow and he saw the technician measure him right before he was “discharged” from the study. They had given him a year’s supply of HPSH (Human Penile Stimulant Hormone) upon departure and told him it would actually last him closer to two years. Now he would just have to wait and see what happened.

It was a Friday afternoon when Jim stopped at Women’s Reproductive Clinic, Inc. on his last sales call of the day. As soon as he was done he was heading for the country and his recently inherited cabin on Peaceful Lake. He rang the bell at the window in the reception area and said that he was here to see Dr. Frank Nettles, more properly known as F. Truett Nettles IV, M.D. He laid down his business card and the receptionist led him to an office in the back and told him someone would be with him shortly. After about ten minutes, the door opened and a voice announced “I’m Dr. Nettles, what can I do for you?” Jim looked up, expecting to see Frank Nettles. Instead there was an incredibly beautiful woman with longish red hair and a set of tits that were unlike any that he had laid his eyes on to this point…but wait….the face, the face was quite familiar. “Jim, I almost didn’t recognize you….I’m Andrea from The Center, you know, you just checked out a short while ago, couldn’t have been more than a month ago.” Jim recognized her instantly as the “Tech” Andrea. “You’re Andrea…Andrea, damn, what a surprise!” “Yes, Jim, Dr. Andrea Nettles, I’m actually a gynecologist, but my father owns The Center and I sometimes fill in as a Tech there.” The two of them chatted for awhile about Jim’s company and the products and then began talking about what had come over Jim.

“Jim,” Andrea began, “I really was attracted to you when you were going through the study, but I couldn’t say anything because I couldn’t compromise the study. Maybe we could have dinner sometime, I would really like to get to know you better.”

“Well, Andrea, at the risk of moving too quickly I might suggest that you join me this weekend at my cabin up at the Lake, I mean I’m leaving later this evening and I’m going to be there ‘till Monday.”

The two of them quickly agreed to the hasty plan. Andrea would meet Jim there later that evening and they would enjoy the weekend together. Even as they spoke, Jim noticed that Andrea’s nipples pushed through the thin fabric of her lab coat, much as they had done at The Center. He was sort of embarrassed to get up as his manhood took the liberty of rising to meet Jim’s old friend and was now fully erect and like steel, making it difficult to walk. Andrea sensed his predicament and closed the door to the office.

“Jim, honey, why don’t you jump up on the examining table here and I’ll help you with your little problem.”
Jim blushed at the suggestion, but did as Andrea directed. Without further hesitation, Andrea pulled the zipper to Jim’s trousers down and released Jim’s ten inch cast iron rod from its penal complex.

“We certainly did a job on your friend there, Jim. As I recall, our dietary supplement added quite a few inches to this little boy.”
Jim was practically unable to speak so aroused was he. That was another thing about the “Potion,” sexual arousal was almost instantaneous given the proper stimulus. Andrea put her left hand at the base of his cock, her thumb, index finger and middle finger trying to grasp the fattened cock and her other two fingers nestled under Jim’s enlarged balls. She used her other hand to finger the almost tennis ball sized head of the giant penis which was now oozing precum. She licked the slightly sticky, salty jism from the head as she eased it into her mouth, anticipating the feel of the stiffened fuck-staff against the back of her throat. Andrea swirled her tongue around the cock tip as it entered her mouth. It was so big she had to open her mouth as wide as she could to accommodate this massive piece of sexual meat. She stopped for a minute, opened her lap coat and then unbuttoned her blouse, releasing two enormous 38 C tits with engorged nipples. Jim thought he was going to cum on the spot, but gasped to himself as Andrea massaged the stiffened mammary portals with the now moist tip of his cock.

“There’s something super sexually charged about rubbing a penis against my nipples, especially your, Jimmy.”
Jim’s eyes opened wide as he observed his love shaft massaging those glorious mounds. It was as though it was separated from him, though he knew it wasn’t because the feeling was so good, oh yeah, so good.

Andrea put his penis in her mouth again and tried to take as much of the vein-rippled, almost pulsing bang stick into her mouth. Jim could feel the head rubbing against the back of her throat as she sucked his cock, massaging his gonads at the same time. He could feel his testicles stiffen as his orgasm neared. Andrea, likewise felt them tightening and knew that an eruption was seconds away. She increased her massaging and took his hardened cock in and out of her mouth. In a moment she felt his penis stiffen and then throb as his orgasm began. She felt the shaft contract as it began shooting what would be an enormous amount of semen out of the slit at tip of the enormous glans. Andrea eased the massive fuck machine out of her mouth and continued rubbing Jim’s balls and massaging the area right behind the head of his penis as it continued to shoot a thick stream of creamy white cum into her mouth and onto her face. Jim raised himself up on his elbows as if to assist his cock in emptying its load on Andrea’s face. about two and a half minutes he felt his climax beginning to subside. The cum shot out of the end of his penis with such force that the hole in the end of his cock felt like it was going to split apart with pleasure/pain. Jim was breathing deeply as his orgasm continued. After Andrea was covered with his semen and she was valiantly trying to lick it off his penis and lap up that which had dripped from her mouth on him. She lifted each of her tits and licked off the cum that had shot onto them. Jim was speechless. He could only watch as his penis became softer. Soon Andrea was gently wiping it with a damp towel and trying to clean the semen off his balls, belly and the table.
“Jim, I don’t think I’ve seen any of our subjects have orgasms quite like you have. I could feel the pressure as your semen shot into my mouth, it was as though it was being sprayed by a nozzle under great pressure.”

Jim stood and Andrea helped him put his manhood back in his pants. It would take an hour for his penis to return to its flaccid size which was not about four inches, maybe closer to five.

At four that afternoon Jim arrived at the cabin. He unloaded his car and opened the front door of the comfortable lakeside home. It was built from logs, but it was well insulated and comfortable. The front faced the lake. There was a covered porch which went the entire length of the one story home and it was equipped with several outdoor sofas, chairs and a swing. Inside, the living room was huge and harbored an inviting fire place. Jim brought in a supply of wood as he was sure they would light a fire that night. In fact, as he carried in the last load it began to rain. He hadn’t even noticed the weather change he was so excited about Andrea joining him for the weekend. As he was thinking of her the front door opened and she came in.

“Wow, I think we’re in for some serious rain. Maybe we better get my stuff out of my car now.”
The two of them ran out to unload her suitcase and a carton containing some food and wine she had brought for their weekend. By the time they got the stuff into the cabin they were pretty wet.