The genie nodded, then vanished in a puff of smoke.
Mike gasped, his body suddenly feeling like an electric current was running through it. He growled as it lengthened, getting taller, adding nine inches and making him six and a half feet tall. He breathed heavily, his head spinning, as the next change kicked in.
All over his body his muscles swelled, bloating bigger and bigger, expanding under his clothes, stretching and then tearing through the fabric. "Fuck yeah!" Mike growled in his deeper voice, feeling his muscles tear through his clothes, shredding the various garments to bits, until he was left in nothing but underwear, which were so tight they were becoming uncomfortable. He was now a massive 400 pounds of pure brawn, every inch of him covered in powerful, veiny, striated muscles.
Finally, it was time for Mike's underwear to go as well. Already stretched to the max by his hefty glutes, the overtaxed fabric shredded to bits as his cock and balls began to grow. His nuts expanded until they were the size of softballs, two huge globes of male power, hanging heavily in his sack. His dick wasn't far behind, expanding dramatically, growing to a solid eighteen inches long, its girth one and a half times larger than a soda can.
"Oh fuck yeah!" Mike bellowed, his voice even deeper than before, resonating through the room. He walked toward the large mirror on the closet door, disappointed but also gratified to see that it couldn't show all of his massive body at once--it just wasn't big enough. As he admired his partial reflection, clothes began to form on him. Pants that covered his huge legs, but that simply could not hide the size of his mighty thighs. A shirt made of stretchy fabric that seemed cut just perfectly to highlight his enormous chest, freakish back, and powerful arms. And of course underwear that stretched impressively, enough to barely contain his massive junk.
Mike turned back to Drake, who stood silently, mouth hanging open. Mike smirked. "That's a good look on you, Drake," he laughed. Drake's mouth slammed shut and he blushed self-consciously. Mike walked toward his roommate. Drake was big and buff now, but Mike loomed over him, bigger and more powerful in every way. Drake wanted to say something, but Mike's earlier command for silence held firm.
"You're hot now, Drake," Mike purred, looking down at his roommate. He tilted Drake's chin up so that their eyes locked. "But I'm bigger, stronger, sexier, and completely in charge. Never forget that," Mike growled. He leaned in and kissed Drake's lips softly, reinforcing his point.