FSE

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This is a work of fiction. Unless otherwise indicated, all the names, characters, businesses, places, events and incidents in this story are either the product of the author's imagination or used in a fictitious manner. Any resemblance to actual persons, living or dead, or actual events is purely coincidental. All characters are of legal and consenting age, likewise if you are reading this story, you should be of legal age in your respective country.

All characters are my own creation, any resemblance to existing characters is purely coincidental and not intentional, please do not use them without permission. If you would like to use them in a story, please feel free to send me a PM either as Inja on SoFurry or TheRealInja on FA. As always, I am open to new story ideas or situations with existing characters as well.

I hadn't originally planned on writing a second part to "Happy birthday sis!" initially, but a few people have been asking. There hasn't been any inspiration to write a second part...until now. I hope you all enjoy. ;3

It had been a few weeks since the incident at Mia's birthday party, Sam had never told anyone what happened and it didn't appear as though Mia or any of her friends knew what had occurred either. When Sam had gently probed Mia about her party to see for sure, she'd just mumbled about vivid dreams but hoped Sam hadn't seen too much of what she and her friends had gotten up to after a few bottles of wine. Sam of course knew very well what she was talking about, remembering vividly the nude bodies scattered around their living room when he had gotten home. He was however thankful that that was where Mia's memory seemed to end for the evening.

He'd explained his inability to perform with Paige later that evening on being too "Whiskey dicked", thankfully she'd accepted this lie but had informed Sam that she still fully intended on getting to ride his dick sometime. They'd laid together on Mia's bed after talking a bit longer, falling asleep soon after as Paige played little spoon to Sam.

As time went on Sam began to feel less guilty about his mistake that evening, even began to forget about it. Soon looking forward to Halloween and the possibilities it offered as Paige had been hinting that it would be the perfect opportunity for them to finally hook up. A couple of days before Halloween an opportunity arose as Mia along with her entourage of usual suspects burst into the house one morning speaking of a costume party at one of the rich students houses that everyone had been invited to. Through all the excited chatter Sam made out that they were going as Heroes and Villains as per the invite, Mia opted to go for the stereotypical Harley Quinn so her new boyfriend could dress up like the Joker. Paige rolled her eyes at this and reluctantly agreed, she'd go as Batgirl then while Courtney claimed the right to go as Catwoman. Mia and Paige tried to argue that was a rather redundant costume given that Courtney was already a black pantheress, but with an "It's either Catwoman or I'm not going" Courtney eventually got her way. The tension was cut when the small mouse girl, Selena, stated she'd go as Robin much to the others glee.

"I'm surprised you don't go as Princess Leia and Han Solo, that way Sam could go as Luke Skywalker" Courtney suddenly piped up, looking at an eavesdropping Sam with that knowing smirk. At first Sam was a bit confused by her comment, at least until he remembered the scene where Leia and Luke kissed. A deep blush burst in his cheeks as he stared hard at the smirking black pantheress, surely she didn't know...

"Nah, I'm not into Star Trek" Mia replied after a moment, much to the small mouses horror and whom suddenly launched into a tirade of differences between the two franchises.

The noisy girls slowly drifted upstairs to Mia's room, quite obviously discussing outfits and costumes while making plans for the party. Sam just rolled his eyes, not being too interested in going to some random persons house and playing dress up. Getting up to grab a drink from the kitchen, Sam stood with the refrigerator door open looking for the last Capri Sun he knew Mia had stashed behind something when he felt arms wrap about his waist and hands begin to brush along his chest and belly.

"You're going to the party too, right Sammy?" Paige suddenly asked from behind him while nuzzling against his bare back.

"Dressing up isn't my thing..." He began to say, but was quickly cut off by her fingers slipping down inside his boxers to grope and fondle at him.

"Oh please 'come' Sammy, I'll make it worth your while" Paige whined in her most begging tone while slowly caressing and stroking along his rapidly swelling sheath.

"You're making quite the case for yourself" he admitted as she slowly stroked his swelling length in one hand while the other reached lower to grasp over and fondle his balls.

"You could dress as Baine, that big brute of a man. I've always liked the idea of him catching and fucking Batgirl, with the masks on and all anonymous, it's just so hot!" She practically purred against his shoulder before nipping softly. Sam had to agree, the idea alone was interesting. But the idea of the smoking hot Paige being dressed as Batgirl while he was dressed as Baine while getting to fuck her finally? That sure was an offer he couldn't turn down.

"You have my permission to get fucked...hard" Sam suddenly said in his best Baine impersonation, half expecting Paige to giggle, instead she groaned softly and gave his throbbing cock a tighter squeeze and stroke.

"Save it for the party big boy" She purred to him, suddenly withdrawing her hand from his boxers, letting him watch as she licked his precum from her fingertips before grabbing the drink from his hands and wandering off back upstairs. Sam watched her shapely behind and hips sway with every step, at least until he flexed his fingers while staring down at his tented boxers.

"Bitch!" he laughed as he realized she'd gotten him worked up and stolen the last drink from him.

Mia sat staring at her mobile with tears in her eyes, reading the message over and over again. That dickhead asshole of a boyfriend had ended things with her over text and the day of the party! As she read through the message full of lame excuses again her screen indicated an incoming call from Paige.

"Sorry M, I have to bail on tonight. Think that Sushi last night isn't agreeing with me..." Paige began to say, but was cut off by a sniffle on the other end of the line. "Mia, you okay?" Paige asked with concern.

Mia burst into tears and began to sob on the line, but after a few moments of not making sense Paige decided it was a situation best discussed in person. It turned out the little bitch session with a couple glasses of wine was just what Mia needed, Paige always knew how to cheer her up, making Mia roll her eyes when she used the classic "Best way to get over someone is by getting under someone new". The line stuck with Mia though, the more she thought about it, the more she realized she was actually feeling a bit frisky and frustrated after everything. An anonymous hookup might just be exactly what she needed, no hang-ups or strings attached.

Sam was pleasantly surprised with how his costume had turned out given how short notice he'd thrown it together. The mask admittedly looked more like a gimp mask with the zipper over the mouth and muzzle, but at least it was the right color and look with the red lenses over the eyes to hide his identity while still letting him see well enough. Along with the mask he'd found a muscle suite that made him look bigger and bulkier than he really was, hiding most of his body so with a pair of baggy pants, boots and gloves he was practically unidentifiable. The mask even made his terrible Baine impression sound almost passable, Sam grinned at his reflection in the mirror as he flexed the fake muscles and struck a few poses.

By the time he arrived at the party it was fairly crowded, looking like the house was far over capacity. Considering the neighborhood they were in, it was only a matter of time before someone alerted the fire marshals and got the party shut down. Sam knew time was of the essence for him to try find Paige and quickly began searching for her, luck shining on him as he spotted a familiar black feline dressed as Catwoman leaning against a wall and looking rather disinterested with the party going on around her.

"Pardon me Miss, have you seen P...Batgirl anywhere?" Sam asked in his best Baine voice.

Courtney narrowed her eyes at him, for once not wearing that knowing smirk of hers, his costume must've been working if it fooled her Sam thought.

"Batgirl is doing Batshots over at the Batpool table...Sam" she replied with that damn cocky and knowing smirk spreading across her lips again.

"How'd you...you know what, never mind. Thanks..." Sam sighed as he stepped past her, giving the curvy feline a brief look over in her skintight outfit, smirking himself as he knew what lay hidden beneath it. Turning away he made his way through the crowd and headed over to where Courtney had indicated, soon finding a group of people dressed as heroes playing beer pong with an opposing group of people dressed as villains. By the look of things the villains were losing and Batgirl was the reason, with her aim she was making them down one shot after another. Sam saw his opening and quickly took the next spot to face off against Batgirl.

"Looks like you know how to handle balls..." Baine said to a grinning Batgirl, much to the crowd's amusement.

"Only big ones" Batgirl replied with only a hint of a slur to her words, making a show of rolling two large white orbs in her palm.

"You're in luck, got a pair just like that" Baine shot back with a grin, just as he sunk his first ball into a full cup at the far wide end of the pyramid closer to her. A little alcohol splashing out onto her costume, to which he threw in "Look at that, getting you wet already", earning a grin from Batgirl. Over the next couple of minutes they traded quips and jabs while they flirted shamelessly, hamming up their character accents and voices to the crowds amusement. Sam enjoying Paige's costume, seeing the bright red wig, yellow gloves and boots along with contact lenses to change her natural eye color to match the animated character.

As the round ended Batgirl wandered over to Baine, grinning up at him and grabbing his hand to lead him back through the crowd and upstairs, away from the noise below. Baine followed eagerly, watching her firm shapely ass sway with every step inside her skin tight outfit, noting that he didn't see any underwear lines. It looked as though Paige had come prepared to seal the deal, one which Sam was only happy to oblige her with. No sooner had they rounded the corner into the upstairs hall would Batgirl whirl around to face him, groping and feeling over his body and fake muscles with glee as they worked their way to the closest doorway.

With their hands all over one another, tugging at costumes while caressing and groping everything they could, Baine and Batgirl stumbled through the upstairs hall and finally though the doorway to a large bathroom. Baine kicked the door shut behind him as his lips followed Batgirls deeper into the room. With a lewd smile on her muzzle she turned them around, pinning Baine against the marble sink counter top as she began nipping and biting softly down over his belly, her hands stroking along his thighs and over his crotch to give a teasing squeeze. Baine groaned out softly through his mask, feeling his cock growing painfully erect within his trousers. Even as baggy as they were, Batgirl was doing a superb job of making them less so, thankfully she wasted no time in undoing his zipper and fishing his aching red length from within. Baine felt a tinge of pride when he heard her appreciative coo as her slender fingers wrapped about his shaft with a slow stroke, exploring his length before she kissed his tip. Her bright green eyes staring up at him as her lips were spread wider and wider to take more of him into her soft sucking mouth. Soon she was bobbing up and down his cock, sucking on him with soft pleasured growls emitting from them both. God she was good, especially when she pressed down on him and he felt his tip touch the back of her throat just as her nose bumped against his lower belly. He groaned louder than ever before as he looked down to see her lips pressed in a lewd kiss to his knot, his entire cock lodged in Batgirls throat as she swallowed hard around him every time he leaked a thick drop of his eager precum against her tongue.

He was more than tempted to just finish in her heavenly maw, but he wanted something else, something he'd not gotten all those nights ago. With great self-control Baine firmly but gently pulled Batgirls lips off his cock, smirking at the thin gossamer strand of his precum forming a web between his tip to her lower lip which vanished from existence as fast as it'd been created. When she looked up at him with confusion and a soft pant, he just grinned down at her before scooping her up off the floor to deposit her behind on the marble counter where his had just been leaning against.

Baine grinned unseen beneath his mask as he easily parted Batgirls thighs and found a rather convenient zipper on the suit, clearly having been planned ahead. Baine unzipped the zipper over his muzzle to tug the lower half down so he could take the first step along his plan. Lowering down to his knees between her thighs with his hands caressing against their inners to keep her spread, Baine leaned forward to catch the zipper between his teeth before tugging it back and down enough to expose the fact that Batgirl wasn't wearing any underwear, confirming his earlier suspicions as her soft pink pussy was exposed. With a firm nip to her left inner thigh, he too wouldn't waste time before delving in, the broad of his tongue dragging up along her hot little folds before wrapping his lips about her clit with a firm suckle. He didn't have to wonder if she was enjoying his attentions when he felt Batgirls claws scratching against the back of his mask, trying to grip and direct his head but not quite able to. Baine grinned to himself, using this to his advantage as he licked and suckled at her randomly, sometimes on spots he heard her groan loudest to, other times just to hear her frustrated growls. After a few moments of teasing Batgirl he shifted his grasp, grabbing beneath her knees to lift her legs over his shoulders proper before he delved his long pink tongue deep within her. The flexible oral muscle corkscrewing and undulating within her as he lapped and lavished every inch he could reach of her snug passage with soft licks. His cold nose now pressed to her clit in a constant grind making Batgirl whine softly, leaving her squirming under his muzzle, at least until her climax hit.

With a loud bark she began to buck and jerk her hips, forcing Baine to grip about her thighs tighter to hold her in place. Lapping and kissing at Batgirl, half intent on keeping her squirming like that for as long as possible, but also just to eventually help her slowly come down. After a few growling and panting moments she would open her eyes at him, even though she was breathing and panting heavily there was still a burning need in her gaze. Baine was not about to let her down, he wanted the same thing and so began to rise up betwixt her thighs, lowering them down to wrap about his waist as he let his cocks hefty weight grind the underside of his shaft against her exposed needy slit.

Baine slowly drew his hips back and forth a few times, grinding his shaft against her until Batgirl was grinding and bucking her hips up against his touch. Only once she looked like she was on the verge of begging did he pull back, letting gravity draw the weight of his cock down and his tip to glide between her pouting folds. Her need getting the better of her, Batgirl reached down to grasp at his shaft and guide his tip into herself, whining faintly as he began to stretch her. With a deviant grin Baine accepted the offer once he felt her heat kissing at his tip, that familiar inviting stretch beckoning him onward. Slowly his hips began to push forward, inching himself deeper and deeper into the tight sweltering heat between toned white thighs. His eyes closed briefly as she felt so damn good around him, tighter than he'd expected, drawing him ever deeper. No sooner had his knot just kissed against her opening did he begin to pull back, watching as Batgirl closed her eyes shut tight while her hands covered her muzzle to stop from crying out. Baine began to withdraw almost all the way out before reversing direction and sheathing himself back inside Batgirl. Soon his hips were tapping against her inner thighs, his large white furred balls tapping against her behind again and again as he finally got to fuck her, thinking this was well worth the wait.

After the fantastic blowjob she'd given him and now the amazing tight heat massaging his cock constantly as he fucked her, Baine had to break out every trick in the book he knew of to not finish quickly. But despite his best efforts, the pleasure was just too much and soon he felt his full heavy balls starting to tuck up against his body. Snarling and panting heavily, his cock began to lurch within her as it fired off hot jets of his slick precum.

"Wait...condom?" Batgirl suddenly blurted out with a panicked look in her eyes.

"What...no..." Baine tried to say in his silly voice, panting and forcing himself to stop thrusting. He'd completely forgotten about bringing protection, but they'd both remembered at the worst possible time. With great self-control Baine began the painful extraction of his cock from the tight embrace before him while muttering a disappointed "Sorry..."

Batgirl pouted in disappointment up at him before looking around her, spotting a few bottles and tubs of things around her, she got an idea. Looking back up at him with a grin, one of her paws reached up to push against his chest and make him step back. Batgirl slipped from her perch on the counter and got to her feet, turning around and grabbing a small tube beside her before handing it to a confused looking Baine.

"Moisturizer? What...oh...OH!" He quickly got the idea when he saw Batgirl turn around to lean over the counter, a hand reaching back to tug the zipper all the way back under her tail to reveal the inner cleft of her soft white furred behind. Yellow gloved fingers gently grasping and spreading her cheeks to reveal a tiny pink tail hole to Baine whom was only too happy to oblige.

First he applied some of the cream to his own shaft, shivering at the unusual silky glide it gave when he stroked himself, finding it would probably be a more than adequate lube. He next got a decent amount on his fingertips before reaching out to press and rub them against Batgirls exposed backdoor, gently rubbing around and over her sensitive flesh. Once every little ridge and crevice of her star was slick with the makeshift lube would be begin pushing deeper inside her. At first the sounds she maid were of slight pain, but quickly shifted to discomfort and ultimately pleasure. By the time his fingers were steadily pumping in and out of the tight clenching opening Batgirl was moaning softly while pressing back onto his fingers, making the most exciting and lewd sounds Baine had ever head a woman make.

Finally he couldn't take it any longer, his fingers withdrew from her with a faint wet noise before he guided his cocktip to her well prepared opening. With a slow firm and steady push he began to enter her, Batgirl and Baine alike both groaned from the tight heat. Batgirl groaning soft and low as she was stretched by Baine's thickness slowly inching under her fluffy white tail. Baine groaned from how tight Batgirls ass was despite the more than ample amount of substitute lube he'd used, if not for that, with how she was clenching and squeezing down on him he had no doubt she would've been tight enough to stop any forward or backward motions. Instead there was a tight silky gliding motion as he began to work himself in and out of the groaning Batgirls ass, his hips beginning to tap against her partially covered behind with a constant pace.

The two masked lovers lost themselves in the moment, writhing and grinding against one another as they enjoyed one another's bodies. Again Baine felt his previously denied climax rapidly approaching, his need almost doubled from before as he bucked and thrust into the tight opening beneath him, getting lost in his own pleasure when with a yelp from below he felt a suddenly different tightness beneath him. Opening his eyes from the pained groan beneath, he peered down in confusion to see he'd accidentally forced his knot inside her. Her body's natural reaction was to clench tight defensively and prevent any further action, instead this just made her clench down tighter on his sensitive knot. It was too much for him and with a howl he raised his muzzle skyward, flooding Batgirls behind with hot messy seed as his balls emptied under her tail in the best climax he'd had since...well, that night many weeks ago. His fingers indenting at her hips from gripping so hard, snarling and panting as he twitched and jerked with every shot of hot cum inside her.

"Fuck, sorry Paige...didn't mean to knot you, I lost control" Sam eventually said once he'd regained enough of his senses, giving Batgirls back a soothing stroke, finally dropping the silly voice and accent.

"...Sam!?" Came a suddenly panicked voice that definitely wasn't Paige's.

"Mia!?" Sam yelped in surprise as Batgirl pushed off her mask and red wig to look back at him in horror.

"Oh God, I'm so sorry...I thought you were Paige!" Sam began to whine just as the bathroom door opened and closed beside them. Sam and Mia turned to look on in horror as Courtney wandered in to lean against the counter beside Sam with that same knowing smirk she always wore around him. Her piercing amber eyes boring into his very soul it felt like.

"Hey Sam, Paige wanted me to tell you that she's too ill to come so she's letting your sister use her costume because her douche of a boyfriend flaked on her" Courtney said without any hint of irony or looking down at Mia bent over beside her, very obviously with her brother's cock locked inside her.

"Why the fuck didn't you say something sooner?" Sam growled at the black pantheress.

"Wondered how long it was going to be before you two fucked again, thought you needed some help." She turned to grin at the two stunned wolves staring back at her.

"Wait, again?" Mia asked with more than a little confusion.