The boy's mouth hanged open as he felt a powerful but strangely pleasurable jolt of electricity travelling through his body, massaging his non-existant muscles and stimulating his growth. As Jake stared at him, his right hand still on his shoulder, the boy started becoming taller, inch after inch, until he was 6'1''; a tiny surprised moan escaped from his lips as he could feel his t-shirt beginning to tense: he had always been slender to the point of scrawniness, but now he was getting... heavier. As he stared to his abdomen, he could feel the outline of a small, but definitely round belly, a belly that kept ballooning second after second, becoming rotund and prominent. The boy, moving as if in a dream, pressed one hand against his new gut and shivered: it was extremely sensitive, just like Jake had wanted it to be.
With a wicked smile on his face, Jake witnessed the growth of two firm but juicy man boobs, topped with large, dark pink nipples. The boy's skin started to itch as a generous pelt of dark hair covered his chest and belly; his pale, nondescript blue eyes changed into a deep green as he looked at Jake, his stare hazy and unfocused. "W-wha-" he muttered as a thick black beard claimed his chin and cheeks.
The boy's arms and legs became decidedly more muscled than before, even though said muscles were covered in a healthy coat of fat and fur. His face became rounder, less boyish but with a happier and more extroverted expression.
"Now for the finishing touches," Jake thought. Small ear plugs appeared in the boy's lobes, along with a septum ring dangling from his nose. The boy moaned again, this time in an increasingly deeper voice, as he felt his sensitive nipples getting pierced by heavy steel rings. In his pants, his modest-size dick got longer but most of all plumpier, thicker and harder than ever before. His clothes adjusted accordingly, with his t-shirt now sporting the outline of a bear paw, a stylish skullcap appearing on his head and his underwear shifting into a jockstrap barely containing his dick and creating a tantalizing bulge in his pants. Jake grinned as he made the boy 100% gay and a versatile with a preference for bottoming.
"W-what..." the changed boy murmured, looking at himself and taking all the changes in. In a matter of seconds, he was a new man, literally.
"Derrick, you okay?" Jake asked him. Derrick shook his head to clear his thoughts: oh, yeah, he was chilling out with his buddy Jake!
"Mh? Yeah, sorry, I was distracted..." he murmured before eyeing at Jake's crotch for a moment. "Dude, can we go to your place, please?" he pleaded. "I'm really, really horny..." he added in a lower tone, right into Jake's ear.
Jake smiled. "Yeah, in a bit, dude. Remember? I wanted to show you something," he said while looking around, searching for a second subject to test the Ring of Changes on.