The 13 became 5

"Are you sure we won't get caught?" Sandbar's eyes darted around as Yona dragged him to a slightly hidden corner of the library, they had been dating for a few weeks and it was one of those rare occasions where they both had a free period, though rather than using it for study purposes, they found it far more preferable to find somewhere in the school where they had just enough privacy to get some quick fucking in.

Yona huffed and said "I already told you Sandbar, nobody comes to this part of the library! Books are all dusty! Now come on, I've been thinking about your dick all day and I need it!"

Yona found the farthest corner of the library possible before letting go of Sandbar's hand, turning to face him, leaning against a sturdy book shelf and then beginning the rub away at her pussy as she lidded her eyes, enticing Sandbar as she put on her best sultry and seductive voice to say "Come on big boy... your girlfriend demands attention, I want you to fuck me so hard that every book on this shelf falls to the ground, fuck me so hard that the shelf itself topples over!"

Sandbar was hard almost instantly, he didn't know what it was about Yona being so domineering that turned him on, it just seemed like the way she would command him to do something and not accept "No" as an answer spoke to a part of him that desperately wanted to fulfill whatever request it was and, luckily for him, the only thing she would regularly order him to do was fuck her brains out. Sandbar approached and lifted Yona's left leg up, wrapping his arm around it and keeping it elevated so he had better access to her waiting folds, Yona bit her lip and moaned as she stopped rubbing her cunt and instead began groping her right breast as the object of her desire inched closer and closer to her hungry hole. The head of Sandbar's cock pressed against her entrance, mere seconds away from entering her, just a little bit more pressure and-

*AHEM!*

Yona and Sandbar both froze, eyes wide as dinner plates and cheeks redder than a red delicious apple as they turned their heads to see Silverstream stood there with her hands on her hips and a smirk on her face. They'd been caught in quite a compromising position.

There was a deathly silence before Sandbar went "Uumm... this... isn't... what it... looks like?" Yona would have looked at her boyfriend as if to say "You're fucking stupid" if she wasn't feeling so embarrassed at that moment.

Silverstream said "Soooo... you're saying it's not you and your girlfriend finding a secluded place in the school to fuck?"

Yona decided that Silverstream's arrival had rather killed the mood and motioned for Sandbar to move away, once Yona had both feet back on the ground she sighed and went "Yes, fine, you caught us. You gonna report us to Headmare Twilight now?"

Silverstream said "Well... that depends now, doesn't it?"

Sandbar raised an eyebrow and said "Seriously? You're about to blackmail us into doing something in exchange for your silence? Actually... what are you doing here if you're not hiding something?"

Silverstream chuckled and said "How very perceptive of you Sandbar! Also I'm here to actually do what you two are meant to be doing, study! Well, at least I was, now I'm here to see if you're willing to cooperate so that I don't immediately snitch on you two for having sex during school hours"

Sandbar wore a deadpan expression and went "Great, thanks, you're a real friend. So what do you want? You want us to do your homework or something?"

Silverstream just gave a wry smile and said "Actually, I want something far simpler. I have an itch that needs scratching but I don't think I'm quite ready for a relationship yet, I'm still waiting for Ocellus to admit that she's bi. I was gonna hook up with Smolder but she's more into Gallus and, unlike you two, they get their fix of sex with each other outside of the school when the day is over. Now that I've caught you two though... perhaps you could scratch my itch? Unless of course, you don't want me to stay silent, hmm?"

Yona decided to re-enter the conversation, with an extremely angry expression on her face she drew Sandbar into a hug and spat "Sandbar my boyfriend! You can't have!"

Silverstream rolled her eyes and said "Geez, relax Yona, if you don't want me and him to interact then that's fine... it just means you'll have to take his place"

Yona thought for a second, she was not entirely against girl-on-girl but she didn't know how Sandbar would feel about it. It was as she was pondering this that she felt a hand tapping frantically at her shoulder, she looked down to see that in her haste to prevent another woman touching her boyfriend, her hug had resulted in said boyfriend being smothered by her rather large tits. Yona quickly removed him from her cleavage, allowing him to take in big gulps of air, when his breath rate returned to normal she said "Sandbar... would it matter to you if I... did stuff... with Silverstream? I promise I won't wanna go out with her! Honest!"

Sandbar chuckled and said "Relax babe, I trust you. Besides, one of us has gotta please her if we wanna keep fucking whenever we want anyways, so if it's not gonna be me then it's gotta be you! Plus, I'm not a cuck but I'm still a guy, I am more than totally cool with my hot and amazing girlfriend showing another girl a good time so long as I'm involved as well!"

Another small silence pervaded the room before Yona grinned deviously, letting go of Sandbar before strutting over to Silverstream and lifting her up in her strong arms. Silverstream, confused and surprised went "Whoaoawhoa hey! What are you doing?!"

Yona set Silverstream down on a nearby windowsill, pushed her legs apart and, with a predatory grin, said "Showing you that yak best at eating pussy!"

Silverstream hardly had time to react as Yona leaned down and mashed her mouth lips against her pussy lips then started thrusting her tongue in and out of her desperate dick-milking love hole immediately, no preparation or build-up whatsoever, she just went straight in for the attack. The effect on Silverstream was similarly instant as she moaned, grabbing onto Yona's horns and saying "OoOhH fuck yes! Devour my cunt you big and sexy bitch!"

Sandbar smiled as he temporarily watched the spectacle play out, it always impressed him to see how strong Yona was because, according to her, she only seemed strong because she was bigger than most other people. Considering that Yona didn't have any obvious or noticeable muscles, instead being blessed with a fat rack and a gigantic ass, she was probably right. Despite Yona's rough approach to eating out Silverstream, she did actually make an effort to take note of just how good her pussy tasted, having only ever experimented with one girl she was friends with back in Yakyakistan.

Yona was just groaning in ecstasy, what Yona lacked in finesse and precision she made up for with pure enthusiasm and just getting her tongue everywhere rather than just focusing on the clitoris or the g-spot. Sandbar decided that it was about time he got involved and stepped forward, his cock was achingly hard and he wanted to get back to his original plan of sticking it in his girlfriends needy pussy, though when he held onto Yona's hips and started prodding at her folds, she did the unexpected and reached a hand back to stop him from penetrating her. Sandbar was about to question what Yona was doing until she reached back with her other hand and patted her bottom before grabbing onto her own ass cheek, pulling it to the side to show off her tight and juicy pucker, she wanted anal.

Yona kept hold of her butt with one hand a decided to use the other to rub her pussy while Sandbar aimed himself a little higher so he could give it to her in the ass. Sandbar pushed the tip of cock against Yona's back entrance, applying more and more pressure until the first inch was squeezed inside, Sandbar let out a breath of relaxation, the way Yona's walls hugged his member made it feel like his dick was going to be massaged to orgasm instead of the hard milking he'd usually feel in Yona's baby chamber. Yona felt much the way Sandbar did and hummed in appreciation, unintentionally sending small vibrations through Silverstream's drenched nethers, Sandbar's cock was a size where it stretched out and filled her to a point of extreme comfort, she even had a hard time deciding which hole she preferred being fucked in.

Once Sandbar sank his entire length inside her rump, Yona let go of her butt cheek and began groping her right breast instead while keeping the other hand busy at her pussy. Sandbar took a moment to immerse himself in the feeling of being inside Yona's rear, the warmth of it as it clung to his erection, the view of his hips pressed up against her thick and jiggly buttocks and finally, the soft and silky smoothness of her skin as he leaned forward and played with her left breast, ready to start pounding her. Silverstream was a mess, panting rapidly and sweating profusely, she hadn't expected Yona to be so ravenous and the fact that she had been caught so off guard meant that she had no real time to prepare for such an aggressive assault on her senses, her orgasm was already beginning to build while the happy couple she had blackmailed into the threesome were only just starting the actual fucking.

Sandbar started gentle, methodically sliding his dick in and out of Yona's back entrance while he sated Yona's desire for his alpha male side with a little verbal abuse as he squeezed her breast and said "Damn babe, with huge fucking udders like these you'd think you were made to be bred, to just constantly be impregnated until you're ready to put these fat milkers to good use! For now though, your hefty milk jugs are mine to have fun with, I can't wait to see those heavy tits swing when I really start ramming your enormous backside!"

Sandbar reached forward with his free hand to grab Yona's shoulder for more leverage as he took things up a notch, giving his girlfriend a slightly harder fucking that was enough to make her glutes wobble but not quite enough to bring the satisfying clapping of firm hips colliding with pliable ass flesh to life. Yona moaned once again and, despite Sandbar's dirty talk, held onto her breast so that it wouldn't be left to just have it's weight swung back and forth from the force of being fucked silly, neither she nor Sandbar knew if ponies and yaks were genetically compatible but if they were, then she wanted to make sure her breasts didn't suffer the consequences of having an overly adventurous sex life.

While Yona was currently unable to speak up, Silverstream could read a girls body language and voiced a desire that Yona couldn't vocalize and that Silverstream herself wanted to see in the hopes it would just push her over the edge and into a dizzying climax by going "Do it Sandbar, fuck her! Fuck her so hard that it hurts! It's your fucking duty to wreck that booty, so man up already and actually give her the destructive butt fucking she needs! She deserves that for being a dirty enough girl that she'd let you stick it up there! She wants it! I want it! Fuck her in half and leave her gaping open like a fucking street hooker! Do it if you're man enough you little fuck! Just fucking do it already and annihilate her ass hole with your stupid fat dick!"

Well, it didn't get much clearer than that! Ever the gentleman, Sandbar braced himself, gripping Yona's body tight as he started slamming his dick into her behind as hard and as fast as he was able. Yona screamed and started rubbing her pussy raw, getting closer and closer to release, though her screams were soon muffled and drowned out when she was forced to swallow what seemed like at least two pints of girl cum as Silverstream creamed harder than she ever had in her life, so hard and intense was her orgasm that she actually failed to make any noise whatsoever, her mind simply went blank.

Seconds later, Yona finally reached her own orgasm, cramming two fingers into her cunny and squirting all over Sandbar's balls as they slapped against her mound. Yona pulled herself away from Silverstream so that she could catch her breath, Sandbar was breathing heavily, determined to ream Yona's caboose and empty his balls inside her. A minute or so of constant anal sex later, Sandbar finally reached his peak and let out a guttural cry of pleasure as he hilted himself in Yona's hindquarters and began pumping a shocking amount of his baby batter into her guts. Sandbar pulled out and sat down, with Yona slumping to the floor soon afterwards with cum leaking from her ass hole. Silverstream was on the windowsill panting, Sandbar was sat down with his boner slowly going down and Yona was next to him with a thick anal cream pie, they couldn't imagine a world where things could have gone better for them that day and with the way they were feeling at that moment, there was no way-

*AHEM!*

The three of them were pulled from their afterglow and looked up to see an extremely displeased looking Twilight, stood there with her arms crossed and a scowl on her face.

There was a deathly silence before Sandbar went "Uumm... this... isn't... what it... looks like?"

The End