Matt stared down at the foot of hard flesh sticking out of his groin. Underneath it sat two softball-sized testicles. Matt couldn't believe they were his.
"These are almost comically large... I wonder if they fit in any of my clothes?" Matt wondered.
He had to find out. Walking awkwardly, Matt waddled over to his clothes drawer and pulled out some underwear. Pulling it up his legs, he discovered it simply wasn't possible. His balls simply took up all the room, and then because his penis had nowhere to go, 9 inches of flaccid flesh ended up hanging out for all to see.
Searching harder, he discovered some boxers that his grandparents had given him. He had never worn them because they had been designed with a huge front pouch. At the time, the pouch had simply hung out, useless as it couldn't even be filled. Now though, it was stretched to max capacity, attempting to hold the python Matt now possessed. Everything fit, and it was comfortable, but there was an obscenity problem. The boxers simply supported the monster by pushing it outward in a bubble bulge that was almost impossible to hide.
Luckily, Matt also possessed some sweatpants. After putting these on, he stood in front of the full length mirror. It was almost impossible to notice, unless you really looked hard. He chuckled "Can't imagine what this would look like if it were bigger. I almost wish it were so I could see". On his wrist, the bracelet tingled.
Suddenly Matt felt, another tingle down in his groin. Matt suddenly realized he was about to get his wish. Well, might as well just watch, he reasoned, no stopping it now.
At first, the boxers contained the added bulk well. The bulge stretched a bit, but otherwise remained static. However, a few seconds later the added bulk was too much for the boxers to contain, and they ripped, freeing a now-even-larger python and accompanying bowling-ball size testicles.
The growth continued for a few more seconds, with the python thickening and traveling further down Matt's right pant leg. There was no hiding the monster: the tube was as thick as a coke bottle! It finally finished, the large baseball-size head halfway down Matt's lower leg.
Shaking, Matt pulled off his sweatpants and the shattered remains of his boxers. What emerged could have been described as its own life form. Measuring, Matt discovered he was now the proud owner of a two foot long soft cock, and bowling-ball-sized balls to match.