Explaining...

"Why would any doe let a runt like you breed her?" The big stag asked with a sneer, glaring down at the smaller male. Tomas looked up into the bigger male's eyes, holding Darnell's gaze with this direct challenge.

"Because I'm not a runt where it counts!" Tomas pointed out with an amused smirk, as the larger male looked down at his bulging crotch. He rubbed his hand over the bulge, making it grow ever larger as Darnell watched in shock.

"Hah... you think that you're bigger than me?" The mighty alpha laughed loudly, although he sounded nervous and uncomfortable. It wasn't the kind of contest Darnell was used to, and while he wasn't scared, the big male still felt off-balance. Yet, the tall male was clearly thinking that Tomas couldn't possibly be larger than him. "You looking to challenge the size of my dick and balls, little guy? How about we make it a wager... winner mounts the loser." Tomas flinched back, plainly the tiny deer was disturbed by that wager. After all, what straight male wouldn't be? Tomas certainly didn't wish to be treated like a doe.

"What, are you that eager to play the doe?" Tomas snorted right back, playing up his own nervousness as Darnell smirked.

"Haha... I'm going to enjoy humbling you, smart mouth!" Darnell snorted, starting to unbutton his trousers, sneering down at Tomas. Soon the buck stood fully naked, his heavy dick and balls large, even for a deer his size. "Well, come on then, show what you've got," Darnell snorted derisively, as he stroked his hefty organ to full hardness. "If you're not too afraid."

Slowly, the small stag began to take off his own clothing, as Darnell watched with increasing discomfort. His sheath and the balls that hung between his legs were truly massive, so much so that the bigger alpha male winced at just the sight. "Don't worry, I have some lubricant... I'll try to go slow so it doesn't hurt so much," Tomas taunted, as his huge organ slipped out of its sheath, and stiffened towards full erection. The truth of the matter was obvious, even before Tomas had reached full hardness. "So, do you really need to measure? Or are you just going to take up the mounting position now?" Tomas asked with a grin, as Darnell frowned darkly at the unnaturally large dick.

"There can be no contest if we don't measure!" Darnell snorted angrily. He moved over to compare his shorter, thinner, and noticeably smaller organs with Tomas's hefty size. Seeing them close together, it was obvious who was bigger.

"Satisfied?" Tomas asked smirkingly, looking up at the taller male's frowning muzzle. Darnell was not at all pleased that he had come up short in their contest. "So, do you want to get down on all fours? Or would you rather just bend over the back of a chair?" Tomas asked with a smirk, as the tall buck grabbed him roughly and lifted him off the floor. The alpha male pushed his nose right up against Tomas's own much smaller one.

"This is bullshit!" Darnell fumed darkly, as the smaller male just hung there in his grip, offering no resistance. It confused him; normally, any stag would have squirmed and struggled, would have been trying to fight, but this buck just hung there, grinning smugly. "This isn't natural," Darnell grunted, reaching down to fondle and tug on Tomas's huge organ, as if he was expecting it to pull off to reveal the other deer's real, tiny organs.

"Mmm, that feels good, my big doe," Tomas moaned in delight as that big hand tugged on his erect member and then moved down to roll those fat balls around inside his furry sack. "So, are you a stag of your word?" Darnell tossed the tiny male back to his hooves, making Tomas stagger backward until he slammed into the wall again.

"This isn't natural." The tall stag repeated, charging over to slam Tomas up against the wall once more. "You cheated somehow... admit it, you've cheated. I'm not honoring a wager with a cheater. You are NOT putting that huge thing inside of me!" Darnell shouted, punching Tomas hard in the gut with one balled-up fist. The tall buck grunted in a high-pitched voice as he pushed the small male back against the wall. "In fact... maybe I should just mount you, **** you just for being a cheating piece of garbage."

"No... no wait. I can show you how I did it," Tomas wheezed breathlessly, clutching his stomach as the taller stag sneered down at him. His fist was raised as he considered punching the tiny male again, even as the frightened-looking little deer blurted out. "I can make you bigger, stronger. No doe would ever refuse you, no male could stand against you." Darnell's lips rolled back into a slight smile as he shoved Tomas against the wall savagely.

"Now how are you going to do that?" Darnell demanded. Slowly, he lowered his fist, as Tomas explained his experiments. Most of what he was saying was beyond the bigger male's ability to understand. Still, the proof jutted there between the little buck's thighs.

"So, I built a prototype, just big enough to fit my genitals inside," Tomas explained with growing excitement. He had never told anyone about this before. "And as you can see, it worked. So then, I built the full-size chambers." The little male gestured grandly toward the two glass tubes, watching as the big buck strolled around the tubes, looking them over. "But I just finished, so I haven't had a chance to use it yet."

"Why two chambers?" Darnell demanded, looking them over as the tiny stag showed off his contraption with obvious pride.

"One is for males... the other for females. See the symbols on the base of the chambers," Tomas pointed out to the big alpha. In fact, Darnell had spotted those symbols. Like on public restroom doors, the big stag smirked as he thought about it.

"So, the male chamber would make me more stag... and the doe chamber could make a female more," he didn't finish the thought, instead just looking over at Tomas for answers.

"Well, yes... make them more buxom... more voluptuous," the tiny buck explained excitedly.

"Why are there latches on the chamber doors?" the big alpha demanded, looking the chambers over thoughtfully.

"Because if someone were to step out mid-transformation... it could be very bad for them, might even kill them," Tomas pointed out seriously, as Darnell considered it for a moment.

"Why would someone step out in the middle of changing?" Darnell asked curiously, running his hand over the glass walls of the chamber.

"Honestly, because the transformation feels very strange... I almost jerked my genitals out of the prototype device," the tiny buck confessed with a blush, moving over to the control panel. "Which would have been a very bad idea. Luckily, I managed not to panic. I stood still and allowed the charge to take place, no matter how strange it felt at that moment." Darnell turned to look at Tomas as he spoke, reading the look on the smaller male's muzzle.

"I can only imagine that a full change will feel even more intense. So I built in a fail-safe; each chamber will open automatically five minutes after the transformation is complete. That way, I could step in, change myself, and be released automatically once the change had finished." Darnell nodded; that all made sense, and the tiny male obviously wasn't lying.