Side effects! Cody was alarmed when he heard that. He already had very hairy pits and some pretty bad BO! He didn't know what these "side effects" were, but he was worried they would make him more jockish.
Cody didn't care what Simon and Devon thought. He ripped off the jockstrap just as it started heating up. Simon and Devon glared at Cody; "You were faking! The hat didn't work!", Simon yelled. Devon snickered and said "Don't worry, well fix this puny body up for you. Pretty soon you will love the new you!".
Devon pinned Cody to the wall and Simon forced the jockstrap back on him. Cody felt the wet smelly jockstrap against his flesh heat up. It was a very pleasant heat, and Cody felt his small penis grow hard. It kept getting harder and harder. It felt incredible! It felt like it was still getting harder and harder. Cody looked down and saw that his erection was twice the size it was before. He was seriously tenting the jockstrap. He could see his dick stretch out a bit longer each time it throbbed. It felt like someone was very slowly pulling it away from him, and it felt great. He also could feel his balls getting bigger and bigger, hanging lower and lower. The jockstrap pouch got fuller and fuller. Pretty soon, the pouch was completely full, but he kept growing.
Cody now felt his groin itching, along with the pleasant heat. He wanted to scratch it really bad but his arms were pinned by Devon. Uggh it itched so bad, but it also felt so good. After a few seconds Cody realized what the itching was as tufts of brown pubic hair began peaking and curling around the edges of the jockstrap. By the look of it, he had a lot of hair down there.
After a few minutes, the changes were finally complete. Cody was left with a 10 inch cock, pounding erect and dripping pre cum like a faucet. The precum was soaking into the jockstrap. Uggh. He would have to wear a jock with all his pants or he would stain his pants. Devon let go and Cody took the jockstrap off to see the changes. His balls were covered in a thick nest of brown hair. They hung low and were the size of two large lemons. Wow they were so much bigger! Cody also spied his pubic hair and gasped. Where had previously only been a couple light wisps was now a proper tangled brown forest. There was so much hair and it poofed out in a very thick bush. It still itched so cody scratched his new hair. It was so thick. Pulling his hand back he noticed a new smell. Cody sniffed his fingers. Gross! His crotch reaked of old sweat! Cody wasn't sure what smelled worse. His hairy crotch or his soppy pit bushes.
Cody's erection was still rock hard. He was so horny with his new endowment. Hey, he had a jocks equipment now, so it figures he would be horny all the time now. Cody didn't care if the two jocks saw. He gripped his cock and began stroking. Devon and Simon smiled. It only took a few strokes until Cody came. He grunted and shot out load after load; a huge amount much much more than ever before!
Devon and Simon laughed and patted Cody on the back as his cock slowly went soft, still dropping in fluids. Cody stunk quite bad after that exertion, and he was quite embarrassed about it, as well as having just jacked off in front of the jocks. "Great job Cody! You know what the funny thing was? All your changes; your pit hair, body odor, new cock, they would have returned to normal in 24 hours. But because you jacked off they are now all permanent! Congrats dude! That cock and those pits are yours forever now!".
Cody was so embarrassed and distraught that he just sunk to the floor and started crying. Simon and Devon were laughing as they devised the next change for Cody!