Coming to Grips
Based on https://e621.net/post/show/946223/2016-animated-anthro-ball_fondling-ball_grab-ball_

"That's not fair! You just said you'd give me a blowjob."

Slurrrp. Sha'Ria lifted her muzzle from the rat's twitching cock. "Yep, and here I am, sucking away."

"Well y-yeah, but." Raj trembled, trying to steady himself as he knelt on the cave floor. "You never mentioned that you were going to squeeze my balls the whole time.”

Ah, had she forgotten to mention that? Whoops. She HAD been itching to go down on him all day...but she'd also been itching to bust his balls pretty much non-stop since they met.

"...I never said I WOULDN'T squeeze your balls,” she countered, looking up at the rat. The nude dragoness was laid out on her side beside Raj, her head propped up on one hand to give her easier access to his groin. Her other hand had snaked between Raj's legs to cup his balls from behind. A golden amulet hung from her neck, with its heavy emerald jewel nestled between her breasts. The rest of Sha'Ria's body and tail curled around behind Raj, like a scaly armchair for the frazzled rodent.

"Besides," she continued, "you still owe me after that incident in the marketplace. Brielle would have popped both your plums if I hadn't stepped in and saved you. Pretty sure that means you owe me at LEAST one free ballbusting session.”

"What?!" Raj stared down at his own crotch, his gaze torn between the muzzle that was inches from his prick and the sharp claws that encircled his spunk factories. “That's not fair," he whined. "Just because I have that amulet doesn't mean you can take cracks at my nuts whenever you feel like it."

"Oh come on, I’ve hardly touched you this week." The dragoness weighed his ballbag in her palm. His leathery pouch was still loose, but it had begun to tighten as the male realized his predicament. “Besides, what's the point of the amulet if nobody’s trying to neuter you?”

"What's the point of a blowjob if the girl just wants to treat your nuts like stress balls?" pouted Raj.

Sha'Ria rolled her eyes. "Well let me put it this way then: I'm GOING to crush your nuts.” She leaned in and delivered a wet lick up the length of Raj's cock, tightening her ballgrip for emphasis.  “And I’m gonna enjoy it. Now I can either suck you off while I do it, or I can just, you know, crush ‘em. Your pick."

The rat’s ears drooped, and he bit back a groan. "Can't I just say no to both?"

"Should have thought of that BEFORE I had you by the balls." The dragoness pressed her nose to his scrotum and gave his right nut a quick nuzzle. "Now before I get started, do you want the amulet?"

“Sure, why not.” Raj hesitated. “…Wait. Why?”

“Oh. Um.” Sha’Ria bit her lip. “Because it looks good on you?”

The male narrowed his eyes. “You’re not going to break anything, are you?”

“Of course not.”

“Are you sure?”

“Of course I’m sure!” She looked away sheepishly. “Yes. Mostly. 99% sure.”

The rat gazed at her for a long moment before letting out a long, resigned sigh. “…Fine, give it to me.”

Sha'Ria grinned. She craned her head forward to undo the clasp behind her neck, then passed the amulet over to Raj. He frowned at the emerald gemstone for a moment, looking at himself in its reflection, then reluctantly placed its golden chain around his neck.

"This better be a hell of a blowjob," the rat muttered under his breath.

If Sha'Ria heard him, she didn't show it. Instead the dragoness shifted to get more comfortable, her thighs rubbing together as she settled into her task. Mmph. Gently she cradled Raj's spuds, tracing her claws around the shape of each testicle. The female had gotten to know his baby makers quite well over the past month, and while they weren't QUITE as large or lovely as a proper dragon’s sac, they were awfully close. Raj was very well-endowed in general — Sha'Ria's thighs rubbed together again at the thought — but his balls in particular seemed huge for his size. And that was before any swelling!

Raj could feel the hair on his neck standing on end as the big female played with his most vulnerable organs, but some of that tension slipped away when Sha'Ria took him into her mouth again. The rat let out a whole-body sigh as she wrapped her lips around the tip of his length, her tongue snaking out along the underside. Ah, right — THAT was why he had decided to stay in this cave with her. Because half a dozen times a day, she made him cum so hard he couldn't see straight. The male wondered how his spunk makers had any spunk left to give after so many ball-draining ejaculations. Then again, his nuts had been turned into peanut butter and back again multiple times since meeting Sha'Ria, so maybe a more appropriate question was how he still managed to shoot a load at ALL.

Sha'Ria sighed with contentment as she settled into her task, eagerly bobbing up and down on the rat's cock. The female had learned early on that the more you pleasured a guy, the more abuse you could heap on his gems, and nowhere was that more true than when giving head — the harder you sucked, the harder you could SQUEEZE. Already her claws were tightening around Raj's orbs, juuuust enough to make them start to deform. Sha'Ria had a great appreciation for the usual round shape of a guy's gonads, but she had an even greater appreciation for the wide variety of shapes they could be squashed into: pancakes, donuts, even little cubes if you were tenacious enough.

Raj gave a short, pained moan as her thumb dug into the side of his left nut, so the dragoness took the opportunity to deep-throat him, swallowing his member in one quick GULP. (Honestly, it wasn't THAT hard with their large size difference. Especially since she'd practiced deep-throating her previous dragon boyfriends anyway.) She slid her muzzle down his dick until her nose bumped up against Raj's groin — or rather, until her nose bumped up against the emerald gemstone hanging from his neck. Sha'Ria gazed at the amulet for a moment, her tongue continuing to toy with the thick rod in her mouth. That amulet...gods, what a find. Until recently, she had assumed that she'd always have to hold back a bit when “playing” with a partner. Now she could go balls-to-the-wall whenever she wanted! It was no wonder she found herself so horny around the rat, with that heavy nutsack always swinging around between his legs. Sure, the rat might PREFER it if she didn't treat his family jewels like her own personal gym, but she could always make it up to him by riding his dick for a few hours — and hell, that was awfully fun too.

Not to mention, it was a pretty uniquely cool experience to see his spuds heal themselves after they, uh, got a bit too mashed. How many people had gotten to witness that? It had only happened a few times so far, but honestly, she liked watching a busted nut repair itself almost as much as she liked busting balls in the first place. After all, it was just like ballbusting in reverse, and afterwards she had a brand new set of rat balls to squeeze and stomp and kick and bite…

Ooh, biting. It wasn't too late to switch to ballchomping…er, ballsucking. That's what she meant. Yep, just a generous ballsucking. Maybe with a few chomps thrown in for good measure. She hadn't done that with her teeth since...well, since a month ago, when she had first met Raj. But it had been awfully fun then, so why not try it again sometime?

Meanwhile, Raj tried not to think too hard about what was about to happen. As Sha’Ria’s grip slowly tightened, he braced himself against the dragoness's body, grabbing a palmful of her ass. As long as this was going to happen, he thought he might as well distract himself with a good grope. The rat closed his eyes and exhaled slowly, doing his best to focus on the heavenly suction on his dick instead of the ominous pressure on his gems. Still, he couldn’t help but gasp as the female adjusted her hold, the vice loosening for one blissful moment, then bearing down even more firmly than before.

Sha’Ria closed her eyes for a moment too, her tail twitching appreciatively at the male’s touch. By this point, her fist was almost white-knuckled, compressing her partner’s testicles into an ever-shrinking space. She could feel the two orbs squirm in her fist, each seeking an escape to safety and finding none. Instead they just bulged like water balloons, little bubbles beginning to peek out from between her fingers.

“Ohhhhhhh god.” Raj couldn’t hold it in any longer. “Ohhh, my nuts.”

The dragoness grinned — THAT’S what she liked to hear. Eagerly she ran her tongue around the head of Raj’s cock, grinding his pair into one another with renewed vigor.

“OhhhHHHhhh,” Raj moaned in reply, his voice lilting upwards as his ’nads were briefly squashed even flatter. His whole body spasmed, and only the dragoness curled up around him kept him from toppling over. “Sha’RiaaaaAAAAA!”

The dragoness slurped down his full length once more, nose bumping against the amulet again as she swallowed Raj to the hilt. She inhaled his musk for a moment, feeling his member pulse in her muzzle. She could feel her grasp on his balls beginning to slip a bit, so she adjusted her grip again—

—and Raj’s left nut took advantage of the moment to make a break for it! As Sha’Ria relaxed for a split second, the spunk-filled sphere tried to slip out between two of her fingers. The swollen orb struggled valiantly to squeeze through the tiny space, but when the dragoness bore down once more, the poor ratnut wound up in an even worse position than before. For an agonizing moment, Raj’s left spud was nearly pinched in two: one half still inside the female's fist, the middle squashed almost flat between two of her fingers, and then the other half bulging outwards like a bubble ready to burst. The lump trembled in place for a long, long moment…before finally squirting out from between her claws and escaping to safety. Hurrah!

“Oh FUCK—!!”

Unfortunately for Raj, that left ALL the strength of Sha'Ria's grip focused on ONE lonely rat testicle, and the dragoness immediately bore down on her handful like a grape in a wine press. As the awful pressure on his gonad suddenly doubled, Raj's moan leapt in pitch, warbling into the soprano. He twitched and scrabbled for something to hold on to, his blunted claws digging into Sha'Ria's ass so hard it hurt.

Sha'Ria purrrrred around the dick in her mouth, her eyes practically rolling back into her head as her partner/victim squeaked out a wordless plea for mercy. The muscles in her forearm ached with exertion. She considered tightening the crank even further, but dimly she remembered her promise to not do any real damage, and instead decided to loosen her grip ever so slightly. Even so, she was awfully close to the point of no return. She pressed her thumbclaw up against the side of the orb, feeling the fleshy sphere quiver in desperation. Just the SLIGHTEST increase in pressure, and she knew exactly what would happen…

And Raj knew it, too. It was a feeling that had become all too familiar recently, as the dragon babe had kicked his plums into pudding on several different occasions. But then again, this was the first time she had done it while trying to suck his balls dry at the same time — that part was new. Even as the male babbled incoherently, his mind clouded with agony and ecstasy, a buried preservation instinct kicked in. His cock twitched and his heavy balls churned as his body prepared to fire a massive load, hoping to spread his genes SOMEhow even if his potential future children were reduced to goo. And as he looked down at the dragoness, his dick buried in her muzzle, his gonad all but obliterated in her claws…the dam finally burst.

“MY NUT,” he croaked, and then exploded.

Sha’Ria’s eyes widened as the first thick blast of spunk hit her tongue. She sputtered for a brief moment, a few sticky strings spilling from her muzzle and onto her breasts, but quickly she recovered, eagerly swallowing down the next shot of the male’s seed. And the next shot. And the next. And the next…

Raj jerked and spasmed, mewling breathlessly and clutching at the nude dragoness as she tried to wring his nut dry between her fingers. He seemed unable to respond to the simultaneous heaven and hell that his crotch was experiencing — or maybe his brain was unable to even process the flood of conflicting sensations coursing through his body. After all, over the past month he had experienced quite a few mind-shattering, impossible-to-forget moments involving his testicles and an assortment of ballbusting dragon babes. Perhaps his brain had simply run out of space for memories about new forms of testicular trauma. Or maybe his body was too busy emptying his battered balls, firing every last drop of sperm that had ever been stored in his swollen spunk tanks.

Either way, it had to come to an end eventually. After a minute of steady sucking, and after a seemingly endless stream of rat batter, Sha’Ria finally let Raj’s dick slip from her mouth with a wet pop. She gave a parting lick along the underside of the saliva-slicked length, then gave his trapped gonad one final hard squeeze, grinning with satisfaction as his cock twitched and shot one last spurt of semen across the floor. When she let go of the poor orb that she had been mangling in her claws…well, it certainly didn’t look like its twin anymore. She watched with amusement as the squashed sphere began to reinflate to its usual shape, refilling the right side of the rat’s nutbag.

“Well THAT sure was fun.” The dragoness traced her claws around her partner’s well-worked walnuts, watching his cock as it continued to throb in the open air. “I mean, I know I give a damn good blowjob, but I can’t remember the last time I saw a guy cum THAT much. You been saving it up for me?”

The rat didn't seem to hear her. For Raj, the juxtaposition of (1) the overwhelming agony radiating from his nutbag plus (2) the busty dragoness drenched in his sperm was simply too much. He hadn’t passed out — no, that would have been far too convenient — but instead he just swayed silently in place, his mouth half-open, his dick still twitching weakly with his heartbeat.

“…Raj?" Sha'Ria poked him gently, looking up at the burnt-out male, but she got no response. "Hello? Anyone in there?"

“T-…testiculus reconstructum?" he finally squeaked.

The dragoness chuckled. “They’re still there, hon.” To demonstrate, she cocked a claw back with her thumb and flicked one of his orbs, earning a fresh yelp from the tenderized rodent. “I told you I wouldn’t break anything.”

Raj just groaned inarticulately, still in a daze.

Sha’Ria winced. “Aww damnit, I didn’t mean to break you. Not this time, anyway.” For a moment she contemplated his ballsac, comparing his well-juiced right nut with his well-swollen left one. Then her eyes drifted upwards again, to the thick pole that still jutted out from his groin. Even as she watched, his manhood seemed to pulse and throb, begging for more attention.

She bit her lip. “Well, you’re still hard as a rock — maybe I can make it up to you. After all, I’m not one to let good dick go to waste…”

Sadly, Raj was too shell-shocked to fully appreciate it as the dragoness straddled him, sliding down the first few inches of his prick...