Her first experiment on a male subject was disastrous! She met a guy at a bar. He was the biggest strongest male she could find and took him home with the promise of sex!

He was a young amateur bodybuilder, with big thick muscles, very tanned and handsome. He was the perfect subject for her experiment! Back at her place, she stripped for him, saying “well big guy think you can handle this? I need a guy with big balls!”

He laughed, took off his shirt, pulled down his jeans, and held a large set of testicles for her to examine. “How about these, baby? They big enough for you?”

She smiled and reached down taking them from him and weighing them in her hand. Then she said “what if I told you I could give you balls five times bigger than these?” She then explained everything to him, who she was and her discoveries, and that she could make him a millionaire if he agreed. He did! The serum that she was about to inject into her first human subject was a concentrated male hormone a thousand times more potent then a hundred bulls!

She grabbed his hard 8 inch cock and pulled him into her laboratory. His cock swelled immediately at the touch of Laura's hand, and she slapped it playfully, but hard! He winced and gasped in pain! She told him to lay on the table and to put his heels in the stirrups. She watched as the big man got onto the exam table. His balls swung and dangled between his legs. She imagined what he would look like in about four hours.

She tied him down tight. He was going to be her first milker, the first of many she hoped. She could see a whole herd of male cows being mechanically milked ten times a day! The ones who couldn't produce, she would castrate!

He watched as she drew the serum into the syringe and stepped between his wide stretched legs. She held his balls up and tight, pushing them to the bottom of his sack so they stood out prominently. She held the bodybuilder’s testicles firmly and roughly, pulling them up in a strangling grip! He cried out in pain! Laura turned with the syringe and injected his right ball then his left. He bucked his hips, threw his head back, and dropped his jaw in even more pain! Laura looked at him with a smile. But she also almost felt sorry for the amateur bodybuilder, who was now really suffering! She watched him try to grab his balls in pain! Then she lifted his balls up and inserted another needle under his manhood. Then slowly his vision of her faded.

Laura watched as he passed out. She noticed that his cock started straining, the veins becoming very prominent, the head swelling larger. His balls were hanging lower now and swelling as well. She looked at her watch: two minutes… hummm!

The phone started ringing she grabbed a lab coat and left the room and answered it. It was her girlfriend, Tosha. Tosha knew all about Laura experiments and was part investor! “Tosha, I've got one on the table right now! I think it's working. Come over right away! He's a big strong one. If this works, we’re millionaires! Tosha, get over here!”

Laura hung the phone up and hurried back. She stopped in her tracks has she entered the room. She screamed! The man she left a few minutes ago, now had testicles the size of basketballs and his cock was a foot long and as thick as her arm. There was cum leaking steadily from it and dripping off the table onto the floor. She checked his pulse. It was racing out of control! Looking down at his huge cock throbbing at the same pulse, she saw his sperm running down the shaft! She knew she had gone too far. This experiment was now out of control!

Just then, Tosha entered the room and screamed, “He's huge! Look at his balls! They’re beyond belief! Even elephants aren't that big!”

“Tosha, I can't stop it! He's getting bigger! I've got to do something to stop him from getting bigger!!” Laura screamed.

“Why don't you just castrate him? That should stop it, wouldn't you think, Laura?” asked Tosha.

“YOU do it!” replied Laura!

[To be continued]