Reluctantly agreeing to Ty's deal, Dustin was quickly reminded of his predicament by his heavy balls throbbing once again, sending another wave of testosterone crashing through his growing body. Just as he was about to shove Ty out of the way and find someone in the mall to plow, the cashier from earlier showed up at the dressing room door next to Ty.
"Sorry to interrupt, but I heard a commotion and just wanted to make sure..." he trailed off, taking in the sight in front of him. Before him sat a man who looked to be about 19 or 20, sporting light facial hair, above-average musculature (though he certainly was no Hercules), and a foot-long cock jutting over the waistband of his incredibly tight shorts. He was also incredibly hot.
Before Dustin stood the awestruck cashier. He looked to be about 20, sporting a fairly average frame, short blonde hair, and a fairly obscene bulge in his tight pants, courtesy of Dustin's earlier efforts. Did I mention that Dustin also found him incredibly hot?
Both men looked each other up and down and connected eyes, sharing a look of complete, unbridled lust.
"Do you want it?" Dustin grumbled in his again-lower voice, glancing hungrily at the massive boner he was sporting.
"Oh fuck yeah I do," the cashier breathed.
That sent Dustin over the edge once again, and he loudly groaned and thrust his hips forward as his cock swelled to 13 inches. The growth spread to the rest of him as well, pushing him up to 6'1 and swelling his muscles to the point that his shirt could barely contain them. Over his now-exposed (and especially impressive) abs that his shirt could no longer cover, a visible trail of dark hair was forming. That was all the encouragement the unbelievably horny cashier needed.
Throwing himself on top of Dustin, they quickly tore their clothes off of each other, fully exposing Dustin's swelling, hairy pecs and 13-inch boner, and fully exposing the blonde cashier's thin frame and still-impressive 8-inch cock. Lining his massive prick up with the cashier's hole, Dustin looked hungrily into his eyes.
"You're gonna enjoy this a lot more than you think," he grinned.
Ty closed the door with a wince. Whatever was about to happen in there, he didn't need to see.
With little warning, Dustin slammed the smaller man down on his monster, ramming all 13 inches straight into him. Practically screaming with pleasure, the cashier immediately exploded, covering Dustin's muscular chest in his spunk. Horny beyond belief, Dustin pulled out slightly a few times before ramming his dick at full force back into the smaller man. Throughout this, he could feel himself continuing to grow, slowly stretching taller and wider. The blonde man was in orgasmic paradise, relishing the feeling of Dustin's cock slowly growing larger inside of him. It wasn't long before Dustin felt his own explosion building.
"Oh FUCK!" he screamed at the top of his lungs as his monster exploded into the cashier, practically filling him with a river of his spunk. A few moments later, he exploded again with a deep roar, blasting his load so hard into the other man that he would probably be cleaning it off of his very soul for the next few days.
Dustin sighed with relief, finally feeling his growth come to a halt for the time being. Pulling out of the panting cashier, he examined himself in the mirror. He had petered off at 6'2, and probably looked about 22 now, considering that he had the physique of a rugby player and a full face of heavy stubble (not to mention the 13-inch dick still softening). He was distracted from further exploration by the blonde man breathing heavily next to him.
"Man, that was awesome but I think something's wrong," he panted, wiping sweat from his forehead. "I feel like I'm about to..."
So this must be the other part of Ty's spell.
Abruptly, the smaller man threw his head back and groaned loudly as he suddenly swelled larger with muscle; pecs, biceps, and quads exploded to life on his formerly skinny form. He moaned, grabbing his ass as he felt it swell outwards under his hand. Dustin watched in awe as abs exploded into existence on the man's abdomen where there had previously been none, joined by heaving pecs, powerful arms, and larger, more masculine hands and feet. The cashier continued to groan and moan as he slowly grew farther from the ground shooting from a modest height of 5'10 to Dustin's 6'2. His new height was quickly followed by the appearance of newfound body hair, across his chest and abs, as well as minimal yet impressive facial hair, a first for the relatively hairless young man.
As the buff blonde opened his eyes and took in his new physique, he looked up, grinned, and cocked an eyebrow at Dustin. However, this celebration was short-lived as his smile quickly dropped as a final wave of growth washed over him.
The man's eyes rolled up as he suddenly grabbed his already-impressive cock.
"FUUUUUUCK!!!" he screamed as his cock suddenly swelled massively in his hand, shooting from 8 to 10 inches. The man collapsed to his knees, still tightly holding his cock as another inch added itself to the tally.
"Shit... this feels so fucking... GOOD!" he yelled as his cock swelled a final two inches, reaching 13 in total like Dustin as he exploded all over the wall of the dressing room.
As his orgasm finally came to a stop, the man fell to his hands and knees on the floor, utterly exhausted by the transformation he had just undergone. The equally powerful and well-endowed Dustin, shocked by the near-pornographic spectacle he had just witnessed, eventually offered the other man a hand, helping him to his feet. Standing face-to-face and stark naked, the men sized each other up once again.
Giving the other a devilish grin, Dustin kept his formal introduction brief.
"Dustin."
"Jeremy," the other man replied. "Thanks for the bang, that was fucking ride."
"Anytime, and I mean it," Dustin replied suggestively.
"Maybe I'll take you up on that sometime," Jeremy shot back with a not-so-subtle look back down at Dustin's dick.
Jeremy looked down at his partially-torn clothes.
"Shit," he muttered under his breath. "I have to get back to work and those clothes sure won't fit me anymore."
Instantly, a selection of clothing appeared from mid-air and dropped to the floor in the dressing room. Dustin silently thanked Ty as Jeremy looked at the sudden delivery confusedly, but he shrugged and accepted it. Squeezing into the outfit, Dustin couldn't help but laugh at Jeremy's new appearance. Ty had provided him with an obscenely tight, white t-shirt that barely covered half of his sizable biceps and ended several inches above his waistline providing a clear view of Jeremy's lower abs. The bottoms weren't much better, as Ty had provided Jeremy with exceptionally short booty shorts that didn't even make an effort to cover his bulging thighs. Even better, Ty left underwear out of the delivery, so Jeremy's obscenely large appendage was visibly stuffed into the front of his shorts, less than an inch away from full visibility.
"Look, it may not be functional," Dustin commented, "but you are really fucking hot in that."
Jeremy smirked at Dustin. "I could get used to it," he rumbled in his new, rich baritone.
A nasally voice rose from somewhere near the front of the store.
"Jeremy! You're needed at the front!"
Jeremy rolled his eyes. "My boss," he explained. "I gotta go."
He looked Dustin up and down once more.
"Make sure you pay me a visit sometime, though," he commented before giving Dustin's dick a final, hard squeeze and disappearing from the room back towards the front.
Ty poked his head through the dressing room's doorway and took in the sight of his nude older brother.
"I take it you're having fun?" he playfully ventured.
Dustin looked down at his still-raging 13-inch boner.
"Fuck yeah I am."