Kevin was so thirsty, and the milk he bought tasted pretty good anyways. He decided to down the rest of the gallon. He decided to keep in the basement for a while, and stripped down to see his whole physique in the full mirror his father had there. Man, those huge muscles, and that huge hose... He was a total hunk, and he loved feeling his hard muscle fibers.
After a while, he let out a loud burp. However, something astonished him. He could actually see a fluorescent green gas come out from his mouth, just like in a cartoon. It didn't smell bad, but it had a metal like smell. The milk was entering his blood stream, producing a nuclear reactor effect in his body, pumping massive power through all his veins, to all his fibers. Suddenly, he felt an incredible surge of power flowing through his system. He felt like he was going to explode, but it was really cool. He came just because of that sense of power, covering a large portion of the mirror. It was the most intense sensation he had ever felt.
He knew it because of his reflection, he was growing again... But this time, the feeling was at least seven times stronger. He grew in height until he was 15 feet tall. He looked like a colossal athlete, because his muscles were only larger at that moment so he looked less buff.
Then, his already big man meat grew until it looked like one of his arms, and his balls were as huge and hard as a pair of bowling balls. He was thrilled. but he knew a key part of his transformation had yet to begin.
Finally, it started. All his muscle fibers expanded and hardened massively, at an alarming rate. He flexed his pecs, and they were as large and thick as two blocks implanted in his chest. Eight massive meatballs were on display at his abdomen. His delts became huge watermelon sized spheres, and so did his forearms. He flexed his biceps, and they were roughly beach ball size. His calves and quads were so thick and huge, his legs were forced to keep half a meter away from each other. He was probably the biggest man on Earth now, and he loved it. Thick veins mapped all his beefy body.
He came again, but this time he left a huge puddle of his man milk. He kept flexing all his muscles and he loved how he looked now. He had to be the strongest man ever, and no one could mess up with him again.
Kevin was enjoying his huge tool while flexing all his muscles, and suddenly someone gasped at his sight.