“Here cover yourself” Coach Jackson said tossing a towel down to Derrek. Derrek looked up at his coach from the floor. He had tried out for the tennis team but struggled to compete with the other guys. Back then he had been kind of plain looking a little chubby, but he really wanted to impress his girlfriend and get on the tennis team. The teams coach smiled knowing he would help Derrek out, he had a special training camp that required a full month hardcore training 24/7 no contact. Figuring it would be worth all of the girl she’d be getting Derrek didn’t hesitate to sign up. A few weeks later he arrived at the gym ready to start training, but when he arrived at the gym, Coach Jackson asked him to strip so he could take measurement. It was a little odd but he trusted the coach. As soon as he was stripped down to his socks, the coach gave him a weird looking drink. Looking at it a little strangely. “It’s just a protein drink” the coach said. Figuring what the hell , Derrek chugged it down, it tasted like chalk and a bit odd but he shrugged it off. But after a few seconds he started to feel a bit weird, at first his skin started to tingle, then the room around him began to spin. Everything seemed to rush up around him and started to grow. After a second Derrek realized it wasn’t the room growing, rather he was shrinking. As his body shrank he felt his arms joined in front of him his legs bent up and joined his hands. His body shrank into his head as his face began to flatten out. At the same time his skin began to fade becoming pale and flattening out. Eventually the changes stopped and he fell to the ground. He tried to move but couldn’t budge a muscle. All of his senses seemed to be mixed into one. He could see, hear and feel everything all at the same time. He watched as the now gigantic Coach Jack bent down and picked him up pull and stretching him in his hands. Through his new sense he could “see” his limbs had been transformed into waist strap and two connecting leg straps. Slowly his new shape dawned on him. What had been his face now formed the pouch to a jockstrap. Derrek couldn’t do anything but scream internally as his coach pulled him on. He gagged on the musk of his coach’s cock and balls, he could taste smell and feel the damp sweat and faint scent of piss. Little did he know this would be his existence for the next month. For the next month Derrek spent practices and match days as the coaches jockstrap soaking up his sweat, cum or worse. Holding his dick and balls tightly as he raced around monitoring all the matches. He was disgusted but as the month worn on he started to enjoy the coach’s scent and taste. Thoughts of women faded and his world became the coach’s cock. The sensations of rubbing against it drinking in the sweat and cum. Toward the end of the month he would feel empty on the rare occasions when the coach would actually take him off. When his month was up, and the coach turned him back as promised. The first thing he noticed was how his body had changed. Where he had once had a doughy body he was now ripped. He marveled at his new body for a second, but then was distracted by the sight of the coach standing there he couldn’t resist as he put the coach’s cock into his mouth the familiar taste and smell turning him on in a way that no girl had ever had before. The coach smiled as he stared down at his new slave.