"Okay...let me see if I have this clear in my head. You want me, your boyfriend...to sleep with your sister?" Mike asked.

With a massive grin on her face, Pinkie merely nodded before answering.

"As Big Mac would say, eyup!"

Pinkie and her boyfriend, Mike were sitting around her breakfast table in her apartment after a rather heavy night of lovemaking. That night had ended rather abruptly however as Pinkie had given her request to him, that her sister Maud would be visiting today and that she wanted Mike to be the one to satisfy her heat. Needless to say, this caught the man completely off-guard, and so here he was, dressed in nothing more than a bath robe and sitting opposite his marefriend with a look of "are you kidding" plastered over his face. Pinkie meanwhile merely kept looking at him affectionately, as if completely oblivious to how big of a request she'd just asked of him. Mike, after a few moment of silence, began rubbing his temples before he finally managed to get any words out.

"Pinkie...are you asking me to cheat on you?"

The pink mare snorted at that before replying.

"No, silly! I'm asking you to do this, so that means it isn't cheating."

Mike paused for a few moments, trying to wrap his head around that kind of thinking, before finally letting out a sigh.

"Pinks...don’t get me wrong on this. Your sister is a fine mare, and I'm sure any guy would be lucky to have her. But...I don't know if I can do this."

Pinkie's ears began to drop a little upon hearing that.

"But Mike...I already told her I'd find her a male to be with this week. My sisters and I have this habit of all going into heat at the same time, and Maud almost never has any time to find a guy to satisfy her, what with all her rock research and all."

Putting aside the fact that Mike had no idea what kind of stuff would go into so-called "rock research", he simply shook his head at his partner.

"I'm sorry, Pinkie. But you're the only mare I want to be with. I couldn't bring myself to sleep with another mare. Maybe some other guys would be comfortable with it...but I'm not."

Pinkie dropped her head a little, her face looking as if she was about to pout. And even though Mike privately thought to himself that Pinkie's pouts were one of the most adorable things in the world, he couldn't help but feel bad at having said no to her offer, regardless of how noble he felt his intentions were. Pinkie looked up a little and gave a small smile and nod. There were no words accompanying it, but the message was clear; that she'd accepted his decision. Mike smiled back, but he still felt down at having no doubt disappointed his marefriend. And on top of that, there was still the lingering issue of Maud's imminent arrival in Ponyville. Both of them knew that she'd have to be told something once she got here, and neither of them was looking forward to it.

However, before either of them could start talking about how to resolve this issue, they were stopped by the unmistakeable sound of knocking coming from downstairs. They gave each other a brief look of fear, both worrying that maybe it was Maud coming earlier than expected. As such they both got up, with Mike tying up his robe even more tightly, before heading downstairs. Once they'd reached the main front room of Sugar Cube Corner, their eyes both widened with surprise. The one standing at the front door was not Maud, but another human male. And more importantly, it was one who was the spitting image of Mike. The stranger waved through the glass section of the door, prompting Mike to approach it and open. Once inside the new arrival embraced mike in a big hug.

"Mike! How’ve you been?"

After struggling out of the newcomer's grasp, Mike caught his breath before answering.

"I'm fine, Jack. Gotta admit though, I wasn't expecting to see you here today."

Jack shrugged his shoulders a little at that.

"What? A guy can't drop in on his twin brother every once in a while?"

Mike let out an annoyed groan at that before Pinkie stood beside him, a big smile on her face.

"Hiya, Jack! Long time no see!"

Jack, catching sight of the mare, gained an instantly amorous look before kneeling before her, taking her hoof and planting a gentlemanly kiss upon it.

"And good morning to you, Pinkie. Always a pleasure."

Pinkie giggled at that, prompting Mike to roll his eyes. Standing up again, Jack looked his brother in the eye.

"So, how's life been for you?"

Mike shook his head a little.

"Could be better. Pinkie and I were in the middle of a little problem actually."

Jack opened his mouth to reply to that, only to be stopped by Pinkie, who spoke up while giving Jack a long, hard look.

"Actually...we might not have as big a problem as I thought."

Mike looked at her with a confused expression upon his face, after which Pinkie turned to face him, her mouth turning into a mischievous smirk. She nudged her head in Jack's direction, prompting Mike to look back at him. It took a few moments, but understanding soon dawned on Mike's face, after which he too gained a somewhat sly look. Jack meanwhile, merely looked from his brother to the pink mare beside him and back again before gulping hard.

...........................................................

"You want me to what?!" Jack asked loudly.

Mike, who was now fully dressed, stood alongside his brother outside the entrance to Sugar Cube Corner. Pinkie was not with them, having already gone out to collect her sister from the local train station. The man placed a reassuring hand upon Jack's shoulder before answering.

"You heard me. I want you to satisfy Pinkie's sister's heat."

Jack stared at his brother for a good number of minutes in utter silence before breaking out into a sly grin.

"So...I get to fool around with a mare like Pinkie, eh?"

Mike frowned at the amorous look on his brother's face before elbowing him in the ribs a little, getting his immediate attention.

"Dude, stop fantasising about my marefriend!"

Jack raised his hands, ready to defend himself.

"What?! I wasn't...!"

But before he could finish, Mike pointed an accusatory finger in his chest.

"Oh please! I know sex-face when I see it, especially when it's technically my face that's doing it!"

Jack looked away from his brother for a while before turning to face him once more, although this time he was looking a bit more down than before.

"Mike...I've never been with a mare before. I...I don’t know what I'm supposed to be doing."

Mike looked at his brother carefully for a while before letting out a sigh.

"Don't worry. Maud isn't an inconsiderate mare. If you're new at this she'll probably help you."

Jack gave a short nod at that. Mike silently wished that Jack would be a bit more serious like this more often. True, around mares and women he acted the hotshot, but in private it was clear that he had more than a few nerves about such things. Mike hoped to himself that being with Maud might help matters. And speaking of whom, both men heard the clear sound of hoofsteps approaching. Turning, they both saw Pinkie approach them, hopping from the direction of the train station with a happy smile upon her face. There was nopony with her, leading to Jack giving his brother a confused look, to which Mike merely chuckled. Pinkie though, after reaching them, merely kept on smiling as she turned and looked ahead.

Mike and Jack followed suit and waited with her in silence as they began to see a figure approach in the distance. After another few, slow minutes, the figure finally reached them. With a purple mane and grey coat, this mare looked almost nothing like Pinkie, especially with the lack of any kind of smile. However, Mike knew this to be Maud, Pinkie's eldest sibling, having met hew a few times before now. Stepping forward, he knelt down and gave a small greeting kiss upon her cheek.

"Good to see you, Maud."

The mare nodded at that, still not smiling.

"You too, Mike. So I take it Pinkie has told you that she's volunteered you to satisfy my heat?"

Mike had to suppress the urge to chuckle at that. Straight to the point as usual, he thought to himself. Only Maud Pie was capable of saying such a thing with a straight face, and with such a monotonous tone. After stifling his, admittedly juvenile laughter, he nodded at her before speaking.

"She has. However, and I hope you don't mind...but there's been a change of plans."

Maud gave no response to that, simply raising an eyebrow. Standing tall again, Mike took a step backwards before placing a hand upon his brother's shoulder.

"This is my brother, Jack. He'll be the one to...er...you know..."

Maud looked from Mike to Jack, prompting the latter to practically freeze up as he looked at her. There was not a single hint of emotion in her face, and yet it was almost as if he could still see a torrent of stuff going through her head while her eyes were on him. There was an incredibly long, not to mention awkward, silence between the group, during which Mike looked over to Pinkie, who merely gave a gesture with her hoof to let him know that it would be best to keep quiet for the time being. After some time had passed, Maud finally gave a nod before speaking.

"He's acceptable."

Jack let out an audible exhale, clearly having been stressed out from this. It was a sight that led to a chuckle or two from both his brother and Pinkie, which earned them both angry glares. Jack's attention then returned to Maud as she began to walk past him and into Sugar Cube Corner. Pinkie gave Mike a wink before starting to walk off, deciding that it would probably a good idea to give the two "lovebirds" some privacy. However, before Mike could join her, he was grabbed on the arm by Jack, who looked at him nervously.

"Um, Mike? Is there anything important I should know before doing this?"

Mike considered that for a few moments before nodding to his brother.

"Yeah...Maud used to crush rocks for a living."

And with that, all of the colour faded form Jack's face, after which Mike smiled and placed a hand on his shoulder.

"Have fun!"

Before Jack could stop him, Mike walked off to re-join Pinkie Pie. The man, now practically frozen in place, took a few moments to compose himself, inhaling deeply before looking behind him. Maud was nowhere to be seen in the downstairs section of the store, which could only mean that she'd already taken herself up towards the guest room. Gulping again, Jack made his way upstairs, silently reassuring himself with every step that he could do this. It didn't do much to settle his nerves however, made all the worse by his quick arrival at the bedroom in question. Taking another deep breath, he reached forward and opened it. His eyes widened when he saw what was on the other side. Maud was already preparing herself, having already removed her greenish outfit, which was carefully folded beside the bed.

Looking her over, Jack couldn't deny that she was an attractive mare. Granted, she may not have the outward energy that Pinkie had, but she shared the same curves in all the right places, especially in the hind quarters, where Jack could see that her cutie mark was, predictably, a rock. Maud turned her expressionless gaze towards the door, raising a hoof and silently beckoning Jack to enter. The man coughed a little before doing so, closing the door behind him. Maud turned from him briefly to raise her hooves and place them upon the side of the bed, after which she raised her hind towards him and moved her tail to one side. Damn, Jack thought, she just gets straight to the point doesn't she? After standing there like an idiot, Jack watched as Maud turned her head as far as it would go, giving him a careful look.

"You've never done this before, have you?"

Realising that he'd been ousted, Jack merely hung his head. Maud didn't seem upset by this, but then, she didn't seem to be expressing anything. Instead she spoke in the same monotonous tone as always.

"Don't worry about it. I'll guide you the whole way. Start by getting your clothes off."

Although more than a little taken aback by how much Maud was continuing to be so straight-to-the-point about all this, Jack nervously nodded to her request. He slowly removed his clothing, all while under the careful watch of Maud. Being viewed in this way was, needless to say, a new experience for him, but he carried on as best as he could. Once fully unclothed, Jack watched as Maud turned her head away from him once more.

"Good. Now, approach me and take position."

Jack didn't need to ask what position, given that a few of his male colleagues back hone had often talked about this sort of thing. So he stepped a few feet forward before positioning himself, reaching forward and holding gently onto Maud's shoulder before bringing his tip in line with her opening. He waited patiently for further instructions. But unfortunately for him, none came. Instead, he was shocked to find Maud thrusting her hips backwards, so much so that he was inserted into her with that single movement. As expected, this caused a sudden yelp from Jack, but no sound whatsoever from Maud. Jack's mind was practically flooded with this new feeling on his member. As his brother's warning had alerted him, Maud had a lot of strength in her, especially down below. The muscles of her marehood were so strong that he swore her walls were crushing him.

Although worried at first, his fears were alleviated somewhat when Maud began speaking again.

"This is your first time in a Mare. Take a few breaths and calm down before continuing."

Jack looked up towards her, seeing that she was still facing away from him. Realising that it would be for the best to do as she'd said, he inhaled deeply a few times, at which point he felt a tad calmer than before. With his nerves dying down, he listened carefully as Maud spoke again.

"Move in and out. Start slow."

Nodding, Jack followed those instructions, moving his hips backwards and forward. However, given the aforementioned tightness that Maud had down there, the "out" part proved more than a little difficult for him. Even so, he couldn't deny that he was getting a wonderful feeling down there. The tightness made every movement like a mini-massage on him. So much so that he worried if he'd last long enough for her. His curiosity was sated when he could hear Maud's voice again.

"You're doing well. I'm feeling quite pleasured right now."

Jack raised an eyebrow at that. He had no reason to suspect that she was lying to him about that, but even so, the lack of even a tiny emotion in her voice was quite difficult to ignore. He'd often fantasised about what his first time with a mare would be like, and he'd always imagined lots of loud screams, not monotone. Still, if he'd caused Maud to say such a thing, he must be on the right track. So, he began increasing the frequency of his thrusts, all while Maud simply remained motionless and took it. Even though Jack would have wanted Maud to be giving some sort of moan or sounds of pleasure, he felt that he would have to content himself with the sheer waves of pleasure he was feeling right now. In particular, he enjoyed those few moments when he would reach down and caress her flanks. Her muscular body meant that she was firm down there, and it felt good to touch such a body.

Even though Maud had not asked him to do anything else as of yet, new instinct began to swell inside Jack's mind. He felt the need to do other things to her while they were like this. In particular, he leaned forward during his thrusts, so their bodies were now parallel, and began kissing the side of her neck. He did this a few times, always making sure to be as tender with his kisses as possible, before whispering in her ear.

"Do...ah...do you like that?"

Maud nodded.

"Yes. It is heightening the experience right now."

Jack didn't know how, but he felt as if he was becoming more and more attracted to that monotone voice the more he heard it. However, that was something he didn't have time to dwell on, as he began to feel something building within his loins. He recognised it immediately as him approaching the threshold. Knowing what was coming, he spoke up to Maud.

"Maud...oh...I...I'm going to..."

But Maud was already way ahead of him.

"So am I. Maintain the speed of your thrusts."

Jack needed no more permission than that, and so carried on going as fast as he could, knowing he was only a few moments away from his climax. That time soon came, as did he for that matter, as he thrust one last time into his partner, whose walls tightened around him so much that he wondered aloud if he'd have nothing but dust down there by the end of it. Wave after wave of his seed pumped into her, as too did Maud's own juices, and all the while Jack was letting out a loud grunt of pleasure. He stayed like this for some time, instinctively wanting every single drop he could give to enter this mare. Eventually though, he slowly pulled out of her, seeing that, despite his fears, he did indeed still have his little friend in one piece.

He began panting after his exertions, feeling utterly exhausted from this. However, throughout it all, he never took his eyes off Maud, who was lowering herself from the side of the bed, her breathing somewhat heavier than before, the only sign that she'd exerted any effort during all this. After a while, Jack worked up the nerve to ask her what he needed to ask.

"So...was it...was I...okay?"

Maud turned to face him, her face as blank as ever, before giving a short nod.

"You did what was needed. You brought me to orgasm and satisfied my heat for the time being."

Jack silently said to himself that he'd never truly get used to hearing anypony talk like that. But still, it seemed as if he'd done what he'd set out to do with all this, which was definitely a plus in his favour. As he began to stand up from his position, he was stopped by Maud, who handed him a small scrap of paper. Nervously, Jack took it from her and began to read it. It was an address of a nearby hotel on the outskirts of Ponyville. His mind filled in the blanks, figuring out that this was probably where Maud was staying during her heat week. The mare said nothing, but the message was clear, that she wanted Jack to continue satisfying her urges during her time here, to which he looked at her with surprise on his face.

Maud began to walk past him, her outfit now being carried in her mouth. But before she moved past entirely, Jack could have sworn that he saw the corner of her mouth turn upwards into the start of a smile. He watched silently as she reached the door, speaking one last thing to him before she left.

"Tomorrow...three o'clock."

And with that, she left, leaving a very bewildered young man behind her.

Author's Notes:

Firstly, regarding the title...I am so sorry.

Secondly, I really hope that writing for a character who doesn't express emotions that much is going to be the hardest thing I have to do in writing this fic.