*Hello everyone! Long time, no see (or rather post). Well, after much anticipation, we've arrived to the next installment of Natasha's nut-crunching mission from within a top-secret weapons facility.

Join our favorite ballbusting Marvel super heroine as she makes an unlikely ally and puts a creepy guard in his place (under her knee, of course) Enjoy!*

--

The clock was ticking. Any moment, any of the assholes who Natasha had left with swollen balls would either be discovered by their friends, or would rouse awake just enough to raise the alarm. Playtime was over. It was now time to get serious.

She crept into the locker room and was delighted to find, hanging up inside an open locker, a red blouse and a black skirt. Underneath the outfit, sitting on the bottom of the locker, were a nice pair of dark heels. Natasha shut and locked the door to the room and worked quickly on undressing. The guns would have to be concealed as best as she could manage under the blouse.

There was a photo ID denoting the owner of the outfit as SAMANTHA BECKWORTH. She was a sexy mature blonde, and Natasha couldn't help but to feel a little warm for the beautiful woman. She was now aware of running water starting inside the shower room next door. Panicking, Natasha finished buttoning the top of her blouse and ducked down beside the doorway, peeking around carefully.

The room was well-illuminated, and from one of the shower stalls further down, Natasha could hear a woman humming above the sounds of a shower nozzle spraying at full blast.

"Samantha, I can't eat you out when you're humming baby. Please just moan for me," a male voice complained.

"Fuck you, Kyle," Samantha replied. "It's been a long shift. I couldn't wait to get you in here with me. I'll hum if I want, babe. Now keep -- ahhhh -- nipping at that clit, boy."

"Fuuuuck me, I am sooooo getting wood after this mission's over," Natasha whined to herself. The monster cock of the guard's was just an appetizer. She now needed the main course.

She stood and crept back out of the locker room and into the deserted corridor.

--

Sam stood inside the lab, studying the spreadsheets chronicling the measured data from the thermonuclear device that lay just down the hall, inside the main lab. There, a handful of technicians were running a new test, surrounded by guards to make sure those tests went undisturbed.

Sam pretended that things were cool, and that it was just another, boring shift of running numbers and reading data. But tonight was the night that his weeks-long routine would come to an abrupt end. And damn, was he ready for it.

To the other staff of the facility, his name was Sam Winters, class II technician, employed by Broken Arrow as a weapons tech. But in reality, his name was Sam McKeon, special agent, employed by SHIELD. The former Delta Force operator was waiting for his rendezvous with another agent, one whom he met briefly before, and one whom was unaware of Sam's true identity. He knew Natasha was somewhere inside the facility, slowly sneaking her way towards the main lab.

And he was ready for her. For a couple of female agents who Sam were banging at one time or another had spilled the beans about Black Widow's special fighting tactic (or rather kink). She had a knack for busting balls and putting the fatherhood of her opponents in jeopardy whenever she had the chance. Sam was really hoping for kids one day, and there was no way he was losing those hopes to one of his own comrades. Especially one who he secretly wished to fuck like Natasha.

Sam waited there, pretending to do work, when the whoosh of the sliding door behind him sounded, signaling the arrival of someone. Gulping, hoping he wasn't found out by one of the dickhead guards, Sam spoke.

"Hey, I'm just about finished here. Sorry if it took so long but the hard drive has been acting up all --"

A feminine hand gripped his shoulder and turned him around swiftly. In the next instance, Sam was greeted -- not by a six-foot-three asshole wearing a tactical vest -- but by a sexy, red-haired beauty wearing a lab coat over a blouse and skirt combo. His heart beat a little faster. Natasha.

"Hey there, handsome," she spoke softly. And then she did it. She swung her leg up with some impressive force, connecting his crotch with her shinbone. But Sam did not fall, nor did he feel his dreams of fatherhood ending as his damaged balls swelled up and his world went black with horrific pain. instead, he just grunted from the impact of Natasha's leg against the athletic cup that separated his family jewels from her deadly, ball-flattening leg.

He smirked at her shock and disbelief. "Did you really think I'd risk my nuts to you, babe?"

Sam spun her around and forced her to lie on the floor, placing a knee in her back to keep her from retaliating. She struggled and cursed, sending a back leg into his nuts from under. This time, Sam felt a bit of pain considering the fact that the cup didn't offer him any protection from such an angle.

"OW," he moaned. "Take it fucking easy, Natasha."

"How...how do you know my name, dickhead," she growled.

"I'm your contact. Sam McKeon from SHIELD. Nick Fury didn't mention me to you in the brief, did he?"

She slowly shook her head. Sam took his knee off and just as soon as he did, Natasha was on top of him. She'd swept his leg out from under him and was now straddling him, her face inches from his. She slipped a hand inside his trousers, between the cup and his precious love spuds and gripped them hard.

"Oh Jesus," Sam squeaked helplessly.

"Tell me who you really are," Natasha growled. "Or you'll be waking up in a world of pain with a couple of squished berries."

"I told you, damn it. It's me, Sam. We met at the briefing for the op in Morocco last month, remember?"

His identity seemed to dawn on her and she let go of his testicles. Sam curled up and moaned feebly.

"Nick...he knows something is up at SHIELD. A spy...someone from HYDRA. He...was afraid if...he informed you about a contact here tonight, then the spy would discover me. We'd both be dead. I've been here for two weeks now. I've fucked that device up every possible way. The test results I run are just for show. All we have to do now is put it out of commission for good."

"What's the plan, then?" Natasha asked.

"Easy. Blow the fucker up, and get outta here alive. All we have to do is get inside the housing unit and pretend to help the engineers fix an issue I 'find.' We subdue them, plant an explosive inside the device, and get out. I've got twenty pounds of Semtex ready to go hidden in the air duct above the housing unit. Just need to retrieve it, plant it, and run like hell. We'll have just a few minutes to get clear, so timing is everything."

Natasha was quiet for a while. Sam breathed a sigh as the throbbing in his balls subsided. As much as he hated to admit it to himself, something else was throbbing inside his pants. The feeling of her soft hand squeezing the shit out of his grapes had brought his meaty cock to full-mast, and he wondered if Natasha had noticed.

She nodded. "Ok, let's do it. What's the security like inside the lab?"

"Four armed guards. They rotate each shift." He checked his watch. "It's a quarter after eleven, so the fresh crew are in there now. Beyond the lab, there is a corridor to the north elevator. Two armed men there. It's the closest exit. Brings you out by the highway. Which way did you come in from?"

"South side."

"Run into any trouble?" Sam asked.

"Oh a guy here and there. And a few pairs of balls." Natasha slammed her fist into an open palm.

Jesus, Sam thought. She's obsessed with breaking balls. I wonder if she's just as obsessed with pleasuring them. He began to fantasized about what was under her blouse and skirt.

"We better get moving then, Sam," Black Widow said, offering a hand to help her colleague off the floor. Sam accepted it, and she lifted him to his feet.

"First things first, lose that photo ID of Samantha's," Sam gestured at the lanyard around her neck. "I made one for you. What do you think?"

He drew a photo ID attached to a red lanyard from the pocket of his lab coat. It showed an older headshot of Natasha from one of her training missions in Canada, complete with a fake name: SHAY PARKER.

Natasha pocketed the ID of the sexy blonde she overhead fucking in the shower earlier, and placed the fake one around her neck.

"Good," Sam said. "Let's go."

--

The two of them had nothing to hide about now. After all, Sam had gained the trust and respect of most of the staff, and would probably be able to pull off the bullshit story about Natasha being his assistant this evening. At least, that's what Natasha was hoping.

She couldn't help but to glance over at the stud as the two of them walked with confidence down the corridor, past numerous guards and scientists, and up to the big bay doors leading to the weapons lab. There were two guards there, a man and -- much to Natasha's surprise -- a fit, young woman wearing a more form-fitting version of her male counterpart's uniform.

"She's an ex-marine," Sam warned in a whisper. "She's killed several men with her bare hands."

"Really," Natasha said in fake amazement. "I once killed a man with a paper clip."

It was the truth, but Sam didn't seem to think so. He just scoffed as they strolled up to the guards.

"Sam Winters, class two technician here to run a diagnostic test on the device. The engineering team are expecting me. I sent a memo out this morning."

"Who's this?" the female guard asked in that bitchy, "this girl's hotter than me and I don't like it" attitude that Natasha despised.

"This is --" Sam started.

"Shay Parker," Natasha interrupted. "Class one technician. I will be Mister Winters' assistant tonight."

"Strange," the female guard said. "I've never seen you before. How long have you been with --"

"Uhh, we're sorta...you know..." Sam said, making a fucking gesture with his hands. "Breach of protocol, I know but hey, it's a free country. And it'll be ever more free once HYDRA assumes full control."

Natasha just stared at Sam in disbelief at the lie. She thought he was cute, sure, but it was still embarrassing for him to just blatantly say something like that.

This guy's got a pair on him for sure, she thought. Maybe if he plays his cards right, I'll empty them for him inside me. She could feel her clit quiver in excited approval.

"Say, babe," the sleazy male guard said. "I'd sure like to breach your protocol. You party any?"

Natasha felt a wave of fresh embarrassment wash over her. Now, she wanted nothing more than to kick this asshole's balls until they were inside him.

"Don't worry about this horny fuckhead," the female guard said. "He's harmless unless you're a lingerie catalog. Then you might get a bit sticky. Go on inside, Mister Winters."

The doors opened, and Sam nodded appreciatively. But before Natasha could follow him inside, the horndog perv of a guard reached down and grabbed a handful of her amazing ass. She stopped in her tracks.

"Come on...Shay, is it? I get off in about forty minutes. We can find a nice spot over at the campground and I'll show you what I can do with my other gun."

He grabbed his junk and pressed her against him.

"Oh really?" Natasha said in a low, sultry voice. "You're an outdoors man, then?"

"You bet baby. I make my female friends moan all weekend long at my campsite."

"Geez I love camping, too. And fishing with big, looooong worms." Natasha batted the guard's hand out of the way and caressed his growing boner with her slender, soft hand. The creep moaned and began to sigh in pleasure as his female companion looked on in disbelief.

"What else do you do in the woods, babe?" The creep asked.

"Just the usual. Suck some wieners by the campfire...skinny-dipping in the lake....and cracking walnuts!" She held onto the guard's shoulders and kneed him with as much force as she could muster in his low-hanging balls. The guard yelped and fell to her feet, clutching his plums.

"Good for you, girl," the female guard said with a wink. Natasha nodded and disappeared inside the lab. From behind, just before the doors shut, she could hear the female guard say, "You had that one coming, Matt."

"Mommy...mommy..." Matt squeaked between sobs.