(mf, cons, mast, penis/breast growth and other such odd goings on) Do not proceed if you normally have to ask your parents permission to stay up late. You know who you are - go watch the educational channel on TV instead. ******** Horsing Around Jim Willets was eager with anticipation as he placed the ruler along the top of his cock to measure its length. Verifying the measurement at 4-3/8", he entered the figure into the spreadsheet on his computer. "Damn", Jim thought, "After 2 months of weekly injections and daily pumping sessions, I've only managed to add barely over 1/2" in length and 1/4" in width. At this rate, it will take forever." Heather walked in just as Jim was jotting some final notes and calculations into his lab book. "Doctor, do you require anything further of me today?" She asked with a mischievous grin on her face. Heather had been working in Jim's Vet lab for almost 6 months now. It had taken Jim 4 months to get up the nerve to ask her out. After dating for 2 months now, their relationship was still platonic...but Heather was starting to drop serious hints about advancing their relationship to the next level. This was making Jim very nervous and was pushing him to get some results from his years of experimentation and genetic research. Jim had always been a lanky lad. Even now at age 31 and 6'2" in height, Jim tipped the scales at 160 pounds and packed very little meat or muscle on his bones. As a sickly youngster, all the other kids poked fun at his skinny arms and legs. And when phy-ed was required in junior high school, Jim dreaded the crush of the locker room. At a time when most boys were far along in puberty, with growing muscles and enlarging cocks, Jim was left far behind the pack with his puny 3" dick. It seemed almost half the size of most of the other boys. In high school, Jim gained almost 8" in height in a period of less than 1 year. Jim had thought that his ship had finally come in! But as his feet grew from size 8 to 12, his penis barely added 3/4". All through college as Jim prayed for a belated growth spurt, he barely measured up to 4" hard on a good day. So much for the supposed relationship between feet and cock size. So, all during High School and college, Jim resolved to try to do the best with what he had. The few dates that Jim went on usually came to a disappointing end when the girls found out that he packed a derringer and not a howitzer. Because of the humiliation he felt, Jim had limited his sexual release primarily to sessions with a vacuum pump for temporary penis enlargement, and ball infusion. While not permanent, the increase in cock and ball size after several hour made him feel a little more adequate. And over a period of several days of repeated use, Jim could infuse over 1000ml into his balls and increase their size to unnatural levels and remain that way for up to a week before his body adsorbed the saline solution. Jim fantasized about having a permanent increase in cock and ball size to that level and beyond. What Jim lacked in sexual organ size, he more than made up in brain capacity. Using this to his advantage, Jim vowed that he would spend his life vocation in search of a cure for his perceived lacking. He combined a Masters in Biology and Genetics with a Doctorate in Veterinary science. Jim's expertise and field of interest was in developmental genetics and the study of the glands and sexual organs related to the breeding of mammals, horses in particular. Jim had always loved animals, but he was particularly fond of horses. After working for a major drug company for several years and making several very successful discoveries, Jim had developed a reputation that allowed him to start his own company. To pay the bills, Jim concentrated on improving the breeding stock of racing horses. But his private battle was to break down the genetic codes that created the phrase "hung like a horse". Jim had made major breakthrus in his research, and had begun the process of transferring his successes with breeding studs to human sexual organ enlargement. But it was a tricky process, and Jim was the Guinea pig. Jim took the cautious approach, injecting himself with only a few ml of the genetic solution at a time each day over a long period of time. He would follow the injections with 1/2 hour of vacuum pumping his penis to force the injected fluid deep into his penile membranes after injecting them into the glans. Jim sighed silently to himself. Only a 3/8" gain after months of the daily regime. He got up and walked out to the stables to visit his breeding stock. Jim always enjoyed his time with the horses. His particular favorite was Toby, the crowning success of his years of breeding and genetic experiments. Breeders came from all over the U.S. to mate their mares with his horses, and there was never anyone not impressed with Toby's "assets". For a horse, Toby was "hung like and elephant". Breaking down the genetic sequence, Jim was able to develop a serum that concentrated itself in mass replication of the tissue of a horse's sexual organs. Administered over time to a mature animal, it was possible to achieve significant size increases in organ length and width. Toby was a normal 16" length and 2-1/2" width at full stud originally, but was a phenomenal 33" length and 4" width after 6 months of daily injections. Jim returned to his office and again met Heather. Jim had secretly suspected that Heather was a "size freak", and may have been dating him believing that there was a direct correlation between his height, shoe size and cock size. Jim was being overly cautious about having sex with her, out of fear of rejection. This only pushed Jim to redouble his efforts with the formula and experiments. Heather again asked Jim if he would like to spend an intimate evening together. Jim politely refusing with the excuse of having to work late this evening and that Heather could go home early for the day. Jim locked the door as Heather left, and pulled all the blinds. This was going to be a late night, and Jim was certain that he was going to make serious gains tonight. Taking a 12-pack of beer from the fridge, Jim retreated to the lab. It was 3pm in the morning and 8 beers later that Jim believed success was at hand. The preliminary tests were all positive. This was the purest genetic concentrate yet prepared, and there was almost 2000 ml in the batch. This would be enough for several more months of continuing experimentation, and hopefully quicker results. To toast his success, Jim decided to down the last 4 beers and go to bed. After finishing the last of the 12-pack, he decided to get a head-start on the experiment. He decided to double the normal dosage and injected 5 ml of the solution directly into his penis. Taking out his favorite dual vacuum cylinder, Jim decided that he was feeling pretty good tonight and would reward himself with some serious combination vacuum pumping and ball infusion. He slipped the 12" long by 7" wide two-stage cylinder over his cock and balls and pumped it up to negative 10" WC vacuum. What a rush this was tonight! For some reason the combination of the new genetic formulation, or was it the case of beer, Jim was feeling euphoric. Jim decided to try to surpass his normal infusion of saline solution and see how far he could go tonight. Inserting the needle just above the vacuum tube seal, and into his ball sack, Jim started to infuse the saline solution into his balls. The feeling was incredible as his balls continued to expand. Finishing off the first 1000 ml after an hour or so, Jim started the next 1000 ml drip. Then Jim increase the vacuum pressure to negative 20" WC. The feeling was indescribable, as Jim passed out. ******** Daylight was streaming in through the blinds as Jim woke up many hours later. Jim's thought process was very fuzzy and he had somewhat of a hangover. Jim could barely recollect the previous evening as he reached down to administer a hand to a raging piss hardon. That's when he remembered that he was still wearing the vacuum tube, or what was left of the vacuum tube! For what Jim found was not a raging piss hardon, but rather the largest cock and balls ever attached to a human male. It was all of 28" in length and over 4" across. The head was a large as a grapefruit. His balls were the size of softball each and hung down almost to his knees. Looking over at the lab table next to his cot, Jim realized that his container of saline infusion solution was still sitting there full, but his 2000 ml container of concentrated genetic solution was empty. He had infused all of the experimental solution in his stupor the previous night. If this was the result after only 6 hours, his growth may not yet be over! Just then Jim heard a key in the lock and turned around just in time to greet Heather coming in for work. Heather's jaw dropped and her eyes widened when she saw the stallion-size erection rising from between Jim's thighs. "So this is what you have been hiding from me!" Heather gasped as she immediately stripped and lunged at Jim's cock. Jim had been right, Heather was a "size freak" and was now in possession of the world's largest cock and there was no holding her back. Heather licked and sucked Jim's engouged prick to a froth, and eagerly ate and licked up the cum that almost immediately spewed forth. Even then, Jim's cock remained rigid. So Heather attempted to mount Jim from above without much success. Heather was extremely disappointed at being unable to pleasure Jim with her cunt. Jim was now far to large to fit anyone but one of his breeding mares. Jim got up and went to the laboratory fridge and took out a bottle of clear fluid. He attached a douche tip and handed it to Heather. "Take this into the bathroom and douche yourself thoroughly. Leave the solution in for at least 5 minutes, and do not rinse with water afterwards. This should help you accommodate my size." Jim explained. Heather returned 10 minutes later with a puzzled look on her face. Jim lay on his back and directed her to again straddle his erect flagpole. Heather's pussy was sopping wet and dripping as it slowly slid over the monstrous head with a loud slurping noise. She could feel her pussy expanding to taking on more of the length of Jim's cock as she took it in inch by inch. Deeper and deeper it penetrated and still had not hit bottom. Heather's breasts started to enlarge and fill out from their normal 38B cup size, expanding to basketball size in a matter of minutes. Her nipples were over 2" long with aerola 6" across. Jim latched on and sucked the warm drops of milk forming on her nipples. Heather had now taken the entire 28" length of Jim's cock with room to spare and began stroking up and down. Never had she felt so filled or fulfilled. Her breasts continued to expand, finally settling in at a very firm over-inflated beachball size. Milk rained down on Jim as he continued to suck. Jim could feel his cock growing further yet as Heather's cunt pulsed with a slight vacuum suction. Finally Jim erupted what seemed like gallons of cum for several minutes, with Heather scooping handfuls and licking her fingers afterwards. Jim slid out his now 32" long by 5" wide super-organ and placed it cum-covered between Heather's humongous breasts and gave them a tit- fucking neither would soon forget. Until the next time... As Jim basked in the glow of the sexual aftermath and cuddled Heather, he dreamed of his next project in elephant husbandry. ******** Justal