Splinter sighed happily as he heard the front door open and shut again. That made seven. Tonight was going to be quite the class. He slowly hefted himself out of his seat, prodigious gut wobbling as he rose. He watched it for a moment before reaching down to stop it with his hand. He'd have time to savor his body later, he had new pupils to teach!

	The seven of them were all gathered in what had once been a yoga studio. The floors were still padded, and one of the walls still bore mirrors, but the windows had been blacked out. It was a much more private sort of studio now, and the seven there all seemed acutely aware of that. They all stared at the floor, shifting nervously as they waited for their instructor. The fliers had all said 'eight pm', and it was almost eight. 

	“You've all come here to better yourselves in bed.” Splinter began speaking before stepping out of his office in the back of the studio, still unseen by his newest class. “There is no shame in this. Admitting your inadequacy is the first step to conquering it.” He continued, slowly opening the door before stepping out to meet his class. 

	They all stared, a few mouths gaping open. Standing before them was an elderly rat, completely nude and quite portly. His belly was heavy and hung over his lap, his thighs thick and meaty beneath it. Atop that generous gut was a pair of pillowy moobs that seemed over sized even with the rat's fatty frame. One of the seven began to laugh, though a few nasty glares from the others shut him up. 

	“I'm sure I'm not quite what you expected when you saw fliers for a 'superior sex' class, am I?” The rat asked coolly, strolling to the middle of the room. He wasn't as tall as most of his pupils, but his presence was huge. He stood with such confidence, such pride, even as the seven all stared. 

	“Well, I can assure you all, you will not be disappointed. That, and you've all already paid for your first lessons online, so...” He trailed off a bit, grinning to himself. “What have you got to lose?” He asked, smiling at them. He seemed imposing and friendly, all at once. 

	There were some murmurs of agreement from the students, and Splinter nodded . He silently pointed to a sign on the wall that clearly read 'No Clothes in the Dojo', and waited. This wasn't just necessary to begin the lessons, it was his students' first test. 

	There was another murmur among the seven, before the most confident one began to strip. Splinter watched him with a keen eye. He was the most fit of the bunch, some definition to his abs and arms. As he dropped his shorts and underwear, kicking them aside, he wore a confident grin. He was sporting a nice nine-incher too, half-hard at the moment. 

	This display seemed to just intimidate the others more, Splinter noticing one looking to the door in mild panic. The fliers had warned them that the lessons were not private, but they all seemed to be only now realizing what that meant. Eventually though, another began to undress, and that gave the rest the confidence to follow suit. 

	Seven nude men stood before the rat, in various states of fitness and boldness. The first was still wearing a confident grin, though it had softened a little as he saw a heavy-set fellow with a cock as long as his, if not longer. Splinter stifled a chuckle as he noticed this. How easily egos were bruised. 

	“There, very good. Now, I am Splinter. You may call me Master, or Sensei, or Sir.” The rat said, getting a few odd looks from his new pupils. He then instructed them to line up, then walked around them to size them up. 

	They were all different shapes and sizes. Some had flabby bodies, unkempt hair, and an unfortunate odor. A few were more like the first man to strip, fitter and more confident. No one was exceptionally large in any way though. All of them were different shades of average. Just what Splinter had come to expect. 

	“Now, can any of you tell me what the key to skillful sex is?” he asked, returning to the center of the room, standing before the group. They all seemed a bit confused at first, looking to each other. 

	“A big dick?” One asked, eliciting a few chuckles. 

	“Yeah, like a monster cock!” Another added, and the laughs grew louder. Splinter silenced them by swinging his tail, slapping it against the padded floor. 

	“No, students. Any man, of any size, can become adept. Regardless of endowments.” As Splinter said this, he noticed a few eyes darting down to his groin, the rat grinning as he heard a gasp. Resting against his thick thighs were a pair of absolutely massive rat balls, easily the biggest in the room. 

	“Then, uh, is it passion?” Another student asked, blushing as Splinter caught his gaze and smiled at him. 

	“No, but you're getting closer.” He said, nodding to them softly. Their blush only seemed to grow deeper as he did. 

	“It's control.” Said the first to strip. Splinter walked over to him, looking him up and down again. He was late 20's, early 30's. A reptile of some kind, verdant green scales. 

	“Control of what?” Splinter asked, leaning in a bit closer. 

	“Yourself!” Replied the reptile. Splinter grinned wide, taking a few steps back. 

	“Exactly. It. Is. Discipline. Like all skills, all talents, sexual prowess can only be honed through discipline.” The rat spoke, noticing the reptile smiling wider. “But I don't think any of you HAVE discipline.” That smile vanished as Splinter spoke. 

	“I do!” He spoke up, arms folding over his chest. “I take great care of myself, unlike some OTHERS here...” He sneered. Splinter walked up to him, frowning heavily. 

	“Do you?” He stepped even closer, his paunch pressing softly into the reptile's abs. “What is your name?”

	“S-Shane.” He replied, trying to take a step back. Splinter kept close, even moving in closer. Shane got to feel the rat's warm, soft body pressing into his, felt Splinter's fur tickling at his scales. 

	“So, Shane, you think you are truly disciplined?” Splinter asked, doing his best not to smirk as the other six students watched. He could feel their eyes on him, on Shane, and it excited the old rat. 

	“Y-yeah!” Shane replied, sounding less confident by the moment. He looked down into Splinter's eyes, wincing as he felt himself growing hard against the rat's paunch. 

	“Then let us see how disciplined you truly are...” And with that, Splinter dropped to his knees and took Shane's cock into his mouth. The lizard was left speechless, starting down at the rat with wide eyes. The rest of the class stared too, one even gasping aloud. 

	Shane moaned as he felt the rat's plump lips wrap around his shaft, his whole cock sliding into Splinter's mouth with one fluid motion. It felt good, better than any blowjob he could remember. Once Splinter started bobbing his head and working his tongue over that shaft, Shane couldn't even think back to his previous experiences. He was too busy moaning and shuddering in bliss. 

	In seconds Shane could feel his cock hit full mast in the rat's mouth, and only a few moments after that he felt pre starting to dribble from his tip. Something about the motion of the rat's head, his thick full lips, his constantly moving, sliding tongue... It was driving Shane wild. 

	He tried to buck his hips once, but as he did he felt the rat's teeth dig ever so slightly into his sensitive shaft. It was more than enough to get him to stop humping, the lizard standing still and letting Splinter do all the work. 

	A few more bobs of his head later, and Splinter pulled back with a lick of his lips. Shane's face was bright red, and with a whimper he came. His seed spilled all over the rat's face and chest, soaking into the soft brown fur. Splinter's hand worked Shane's balls as he climaxed, coaxing out as much cum as it could. 

	“Well...” Splinter mused aloud as he watched the last of Shane's seed dribble out. Barely thirty seconds to climax, if even that long.“If that is your 'discipline', then I am greatly disappointed, Shane.” He said, slowly rising back to his feet. He licked his lips clean, but didn't bother with the rest of the cum in his fur, simply letting it sit there for his whole class to see. 

	“N-Not fair! You didn't give me any warning, I...” Shane tried to defend himself, but a quick squeeze to his spent balls shut him up. Splinter let them go and returned to his position before the seven, enjoying all their shocked and impressed expressions. 

	“Now, I will do the same with all of you, one by one, to gauge your current... readiness.” he said, wiping a bit of cum off his muzzle and slurping it off of his fingers. “Hopefully you won't disappoint me like Shane. Who would like to go first?”

	The next five minutes or so were a repeat of Shane's embarrassment. One of the remaining six stepped up, Splinter dropped to his knees, and in half a minute or so he coaxed a load out of them. He always pulled back jut in time to let them finish on his face and chest, allowing him to see just how much they produced. 

	Most were at least as productive as Shane, though a few of the men there could barely manage a squirt. The most productive of them all was easily the heavy-set fellow with a cock about as big as Shane's, a boar that seemed to weigh around 300, maybe 400 pounds. 

	“What is your name?” he asked as he finished taking the boar's load, face and chest quite messy by now. 

	“J-Jeremy...” he grunted, blushing heavily as the rat stood back up. 

	“Well you're doing quite well so far, Jeremy.” He said, moving on to finish up with those he hadn't serviced yet. 

	By time he was done, Splinter's chest and face were covered in stringy strands of white. The rat made a show of running a finger through the cleft between his soft moobs, then sucking the cum off of it in front of his students. 

	“You're all as I expected you to be; undisciplined. Do not worry, this is where all men start.” As he spoke, Splinter walked over to a small closet and began to look around inside. “I was like this, years ago, before someone came into my life and taught me discipline. I could manage a climax as weak and pathetic as yours once, maybe twice a day, and I took that to mean I was 'virile' or something else silly.”

	“However, I think it's clear I'm more virile now than I've ever been.” he stepped out of the closet for a moment, hefting his balls for the seven to see. “And I will only grow more potent with time.” He added as he ducked back into the closet, rummaging around for something the seven couldn't see. Occasionally he popped his head out to peek at them again, then went back to rummaging. 

	Just before someone got curious enough to speak up, Splinter turned and presented what he'd been searching for. Seven shiny, stainless steel chastity cages. Most of his students didn't know what they were at first, and those that did went a little pale. 

	“To build discipline...” Splinter began, walking back towards the seven to distribute their cages. “...one must abstain from wastefulness. To spill your seed in your hand is a waste.” he handed Shane his cage first, then went down the line, one by one. 

	“These will help you control yourselves. These will stop wastefulness. These... will teach you discipline.” he handed the last student their cage, then returned to his spot in the middle of the room. “You will wear these at all times, starting today, until I am satisfied you are truly ready to remove them.” A few complaints were raised by those who didn't quite like that idea, but Splinter silenced them by raising a hand. 

	“You have all agreed to take this course, and to follow my instructions. That was the contract you accepted when you made your first payment.” The complaints grew silent. “Now, of course I cannot FORCE you to wear these caged, but if you do not agree to wear them, or if you take them off... your deposits for 'training equipment' will be withheld.” 

	“What!? Five hundred dollars, gone, because we wouldn't lock our dicks up?” Shane exclaimed, clearly upset. The few that hadn't figured out what the cages were for suddenly realized, looking down at them with wide eyes.  

	Splinter stared Shane down, making him squirm. “You agreed to those terms when you signed up for the class. Or didn't any of you read the whole lesson plan and contract?” Everyone went silent, even Shane. 

	“I did, sir.” Jeremy spoke up, blushing a little. 

	“Very good.” Splinter replied, nodding. Jeremy smiled softly, blushing deeper. “Now, if any of you need help getting your cages on, feel free to ask me. Otherwise, put them on. Now.”

	Again there was an awkward pause where no-one wanted to move. Jeremy was the first this time, approaching the rat with cage in hand. “I can't get it on myself, sir, could you...?”

	Splinter nodded silently and took the cage, kneeling down in front of the boar and carefully getting him ready. The steel ring was slipped over the boar's heavy balls and then the base of his cock, and once it was in place Splinter slid the metal hood over Jeremy's shaft. The two pieces clicked together perfectly, and with another click the lock holding them together was shut. 

	Splinter tugged on the cage in a few spots, making sure it was secure and comfortable for the boar. It seemed to be a perfect fit, and the rat gave Jeremy's balls a pat to let him know it was in place. 

	“So... when do these come off?” Asked one of the students, fumbling with their cage. 

	“When your training is complete, if you like.” Splinter replied, stepping up to them and helping them put their chastity cage on. 

	“If we like?” Came another voice, confused. 

	“Well, yes. If you choose to take it off, I'll give you the key, but if you choose to stay locked up...” Splinter took a few steps back to position himself where all seven of his students could see. He lifted his belly up, and put his own chastity cage on display. 

	“I have been caged for over a decade.” Splinter said proudly. “It leaves me pent up, virile, and always ready.” He added, smiling as a few of his students gawked. 

	“Wait, if you've been locked up that long... how do you cum?” One of the seven asked, and Splinter smiled.

	“Ah, that is part of your next lesson; milking the prostate.” he explained, winking. “Though I have not done even that for years. I choose to abstain from release so that I might continue to be truly virile.”

	“How can you, I mean, resist the urge to let yourself out?” Jeremy asked, blushing as he helped another student with their cage. 

	“Oh, well it's quite simple really: no key exists that would fit this lock.” Splinter explained rather casually. “The original keys were melted years ago, and the lock itself is filled with glue.”

	“You could still cut the lock with some bolt cutters...” Shane muttered, still struggling to get his cage on. 

	“True, I suppose I could. But I won't.” Splinter said, smiling and approaching the reptile. Shane blushed as he noticed the rat come closer, but didn't resist as he was caged and locked up. With his dick locked away, all seven were now caged, and Splinter smiled as he looked over them all. 

	“Very good, my students. Today you've taken the first step in mastering yourselves. Now, you can all get dressed and get ready to go.” The rat said, walking back to the closet to fetch a towel and clean himself. 

	“That's it!?” Shane grumbled. “That wasn't even a lesson! You just locked our dicks up!” 

	“I am aware, Shane.” Splinter replied, cleaning the jizz off his chest. “But before I can train you, I need to know you will not give in. So, one week until our next lesson. You will spend that time locked up, constantly. If you cannot manage this, you cannot learn.” With that he finished toweling off and returned to his office. 

	He smiled as he heard his students begin to talk among themselves, shocked and intrigued by their new 'master'. Slowly they got dressed and left, leaving the rat alone to meditate and relax. He was truly looking forward to the next lesson, because that was when the real fun would begin. Just thinking about it made his balls ache pleasantly. Perhaps he'd invite a friend over to help take the edge off...