An evening with Sweetie - by Rhurrs

"SWEETIE BELLE!"

Sweetie could not have squeaked any louder the moment that she heard that voice. Her entire body sprung backwards almost two full feet in surprise, sending her backside and her hooves slipping into the sticky mess that had splashed about her. This was the last thing that she had wanted! She didn't want her sister to see what she was doing, to glean it from the mess that she had left, but here she was, caught right in the act with her dusky massive shaft still unrepentantly leaking semen.

"R-Rarity! I...I...I...." Sweetie's eyes were wide with stunned shock, like a cornered little animal that wanted nothing more than to find the nearest hole and run away. Indeed, had Rarity not been blocking the door the younger mare would have probably gone and locked herself in the bathroom and stayed in there for the better part of a day out of pure shame.

"I... I'm sorry about the mess! R-Really! Really I am!" Sweetie tried to backpedal a little further, but her slicked up hands and hooves were not finding much purchase and it was making her look rather silly with the frantic way that she kept subconsciously trying to get them under her again. "I'll... I'll clean it all up! I promise! I'll wash the bedding! I'll make you breakfast in bed tomorrow! Just please, please PLEASE don't be angry, please don't tell mom and dad about this!"

Rarity certainly looked like she wanted to punish her little sister for all of that mess she had made. It was one thing to get a little semen here and there, but the more that she looked around the more that she saw the extent of Sweetie's need for release. Spunk wasn't just on the floor and the bedding, it was on one of the walls, an end table and even the ceiling in a few places where the eager young unicorn had unloaded more feverishly than the rest. The elder mare's arms crossed across her chest as she looked down her nose at the little mare who couldn't try to apologize enough for what she'd done.

"I'm sorry Rarity, I'm sorry, I'm sorry, I'm sorry!" Sweetie Belle really sounded like a broken record, but it was all that her frantic mind could come up with at the time. Her big sister wasn't talking to her, just staring at her and, Sweetie knew, she had to be silently judging her as well. The two already had their little spats when Sweetie tried to help and made a mess, but this wasn't helping anything, this had been Sweetie helping herself and she knew it, there was no explaining this away!

"Sweetie Belle!" There was the voice again, it wasn't as surprised, but it was every bit as commanding as her sister could be and it made the young mare freeze in place. This was it then, here it came, she was going to find out what her punishment was going to be and it wasn't going to be good either. Sweetie's ears pinned back against her head and she looked up at her big sister rather sorrowfully, her body language just screaming that she was waiting to reel backwards in horror.

Rarity drew a deep breath and sighed, letting her arms fall to her sides before she brought one of her hands up to her face and rubbed the spot between her eyes between thumb and forefinger a few times. "Sweetie Belle darling. Whatever am I going to do with you?"

"U-Um... W-Well..." Sweetie didn't have an answer for that, it was no different than asking a child who had done something wrong what their punishment should be. They didn't want to be too harsh on themselves, but at the same time, they couldn't bring themselves to develop the gall to say 'let me go scott free'.

Rarity sighed again and let her hand fall from her face. "I suppose I should have known that this would happen sooner or later. It's not as if you're not my little sister and it's not as if I didn't do much the same thing when I was younger either." Those words were muttered softly, mostly to herself, but still loud enough that Sweetie could hear them as well.

"R-Rarity?" Sweetie was about at the point where the lack of any outcry further from her neat and tidy sister was making her nervous, the last time that Rarity had tried to keep all her frustration with her in, she had blown up and the last thing that the young mare wanted was to have her sister renounce her as a little sister again!

"Hush Sweetie darling." Rarity closed her eyes and actually smiled a tiny bit at the young mare, extending a finger and stepping forwards, not even caring that she had put a hoof into the puddle of Sweetie spunk. The finger pressed into the younger pony's lips and stayed there as a notice of intent that Rarity didn't want Sweetie piping up any more for at least a while.

"I've known for a long time that you had that thing you know, did you really think that I'd forgotten from all those times that we bathed together when you were younger? Big sister has a very good memory. I just wish that you had told me that you were starting to get this pent up." She glances around the room once more. "You're both a very big and an exceedingly productive little mare just like your sister, I would have understood if you'd said something you know."

Sweetie wasn't in a state of flux as her sister spoke, was she not going to be punished for this? Was Rarity working up to that? Was this going to be one of those dreaded 'I'm so disappointed in you' speeches that she had gotten a few times when she brought back a poor report card as a filly? She opened her mouth up like she was going to speak only to have that finger push down more firmly than ever.

"Consider this your warning Sweetie darling, from now on when you're staying with sister and you need to get yourself off, you come tell me and I'll see to it that you can do so in a place a little more appropriate."

Sweetie's eyes turned up towards Rarity, was that it? She wasn't going to be scolded, she wasn't going to be sent home? Mother and father weren't going to be told what she had been doing?!

Rarity cleared her throat softly and then broke into something of a more genuine smile. "Now then darling, let's get you a bit more adequately taken care of so that we don't have to worry about this happening again anytime soon hm?"

"W-What? What do you mean sister?" Sweetie couldn't believe that her big sister could possibly mean what she thought that she did.

"Darling, you were still rock hard that whole time!" Rarity pokes a finger into the younger mare's towering shaft only to have it spring right back into place as soon as the finger was removed. "Clearly your body is thinking something very different than your mind if you didn't even realize that your erection didn't go away despite your orgasm or your surprise."

Sweetie's cheeks turned the brightest shade of red upon hearing that, even moreso than she had been a few scant minutes ago when Rarity walked in on her. It was as if every bit of blood that hadn't pooled in her oversized cock had rushed into her cheeks "I... I... Well... Um... I suppose..."

"That's what I thought darling..." Rarity glanced over and levitated a chair from the corner of the room over and set it down right next to herself. She stripped her robe off and levitated that into the closet right near the corner where that chair had come from. "Come here darling, let's get you taken care of."

Sweetie couldn't believe what she was hearing or for that matter what she was seeing. Her big sister was a pretty mare and one that she very much hoped that she would grow up to be like and Rarity was presenting herself so freely like this... For her?! "But... But Rarity... The mess..." She whimpered softly while slipping herself up into her big sister's lap. Along the way her backside bumped into the meaty swell of her elder sister's pristine white sheath, scooting back until she was resting her body against Rarity's stomach, legs splayed out so as not to kick her sister's testicles. Sweetie couldn't help but stare down for a moment. She was a big mare by all rights, but goodness did Rarity have huge balls! Sweetie actually found her mind trying to fathom just how much that Rarity would cum by comparison!

"Sweetie darling, the room is already a mess, we'll have to clean it up no matter what. No sense in cleaning it up if there's a chance that you'll just make the very same mess all over again is there?"

Sweetie Belle's gaze turned up towards Rarity as her little plot found itself rubbing against Rarity's lap without even realizing that she was starting to get her sexual side running once again. "But..."

"Why do you think that I'm joining you Sweetie darling? If I'm going to clean a mess like this up no matter what, I would rather know that I had some fun helping make it~" She chuckles and nuzzles down at Sweetie Belle playfully.

Even though Rarity had not been the one with the oppressive need to get herself off, it didn't stop her heavy alabaster shaft from slowly sliding itself out between her legs and also between Sweetie's either, the ivory thickness nudging into Sweetie's ashen balls and nudging them up and out of the way.

Sweetie began working even more in earnest while watching Rarity growing more and more aroused herself. One of the younger mare's hands finding its way against her dark shaft to stroke along the side with as much as her slender digits could get around being encompassed. Her hips shifted and lifted just a touch, allowing her to drag her thick, spunk stuffed testicles along Rarity's growing erection, providing both herself and her sister a considerable amount more pleasure than had she just sat there.

"Ooooh, now that does feel divine Sweetie darling~" Rarity's voice betrayed her surprise, but also her pleasure at how her little sister had been creative enough to work them both over in her own way. The reward for such creativity from Sweetie was one of her sister's hands pressing into the side of a dark orb and rubbing around in tiny circles that expanded into larger ones the more that Rarity rubbed.

Precum began dripping from Sweetie's needy maredick right onto Rarity's after a few minutes of that, but it didn't have far to drip either. For as rigid as Sweetie had been to start with, Rarity had grown to be as such during the course of their sisterly tryst. A massive white shaft towered up from under the ebon one, pressing into it for a considerable distance before Sweetie's lack of a body pressing down and angling her a different way made them separate.

"Wow..." The little mare had taken a while to realize that the firmness that was nudging into her cock's underbelly was indeed Rarity's own penis, having been so obsessed with her own that she sort of spaced it out. She couldn't keep from tilting her head to the side and gawking for a little while. As big as she was, even Sweetie was surprised with just how huge that Rarity was.

Rarity gave a knowing smile to her little sister, not the first time, not the last time that she would be stared at for her endowment. "Go on darling, grind yourself into big sister, it feels good for me too you know."

Sweetie's head bobbed up and down with eager nods, sliding herself all over Rarity's lap in an effort to saw one massive she-dick into another one as quickly and as fully as she could. Little squeaks and coos of pleasure just couldn't stop falling from Sweetie's lips the closer her fevered ministrations got her to a second climax.

"Gently darling, gently, there's no rush~" Rarity purred, as she pulled her little sister back to the furthest part of her lap, pressing Sweetie's backside against her midriff and rocking her hips in a slow, deliberate way, sliding much of herself against Sweetie Belle with an ease that belied practice.

Sweetie squirmed with pleasure, but trusted her big sister enough to not tamper with what Rarity was doing. The little mare nuzzling and kissing eagerly up at her sister with growing frequency. It was all that she could do to work off the tension that was building and threatening to make her lose her mind.

"R-Rarity... I... I'm going to cum..." Her voice squeaked in a panic, trying to hold still even though her dusky mare meat was bucking, just begging to be pushed over the edge.

Rarity knew why her sister was hesitating, Sweetie wanted to make sure that her big sister not only wasn't going to scold her for what was to come, but also she wanted to be sure Rarity was satisfied too. "It's okay Sweetie darling." Rarity's voice was comforting and warm. "Big sister wants you to cum for her~"

Rarity's lips met with Sweetie's and held for a prolonged period as she pulled her hips back and held her little sister in place in her lap as best she could. Those same hips made a trip forwards a half second later and that was the extent of what Sweetie's still pent up self could take.

"Mnnnnnnn!" A high pitched nasally whine poured into a kiss that she really didn't want to break even though her hips snapped upwards in a release of tension. For the second time that night a thick gush of white burst from the young unicorn's cock, splashing it's rich sticky volume across the floor in waves. Only this time, for some reason it felt so much better, so much more fulfilling as her full balls sent their contents skyward with increasing velocity each time. Sweetie now knowing that she wasn't just satisfying herself, but she was showing off for her big sister. A big sister who had not only allowed her to do this, but had requested it!