Behind Barn Doors

For as long as Twilight could remember, Spike had been her best friend. From the time she had hatched him during her entrance exam for Celestia's School for Gifted Unicorns, they had been nearly inseparable. Even after she had concluded yet another adventure, she would always be able to return back to find Spike diligently organizing books or cleaning the library. Their relationship had been that of a brother and sister, both caring and nurturing the other, yet never ceasing to irritate the other when the opportunity arose.

That is, until recently.

Over the years, Spike had grown more distant from Twilight. His attitude changed from a care-free young boy to a quiet, often malice-filled young man. Instead of greeting most people with a smile, Spike ventured from his home more often than not with his hands in fists and a grimace on his face. He never appeared happy anymore, and that worried Twilight. She wanted her younger 'brother' to be happy, as most siblings want for their others. Of course, whenever she attempted to talk to Spike about what troubled him, he shut her out, claiming that he was just in a  bad mood that day.

Despite the changes in his attitude, Spike's physical appearance had also changed. Gone was the young boy, now replaced by a young man standing at eye level with Twilight. Where Twilight stood at five feet and ten inches, Spike stood a single inch above her, a fact which he had been more than proud of. Also noticeable with his form was the subtle addition of muscle, not toned to the point of a bodybuilder, but enough to give Spike a little shape around his arms and chest.

Twilight just wanted her baby brother back. She grew tired of silent breakfasts in the morning, grunts in response to a question she had, as well as an overall sense of cynicism radiating off of the young man. Short response, a hair trigger, short fuse. Spike had all of the qualities of a grouchy old man.

In short, she wanted her brother to stop acting like such a dick.

To accomplish that, though, was easier said than done. First, she would have to discover what troubled Spike. Could it be the harsh changes from boyhood to manhood, or something of a more... Primal nature? She was unsure. What Twilight was sure of, however, was that this matter required research.

Why is everyone so cheery all of the time?

This question had plagued Spike for the past month. Everywhere he went, people had smiles on their faces, greeting him with a friendly wave. Everyone, including his own 'sister', was always in an overly-happy mood, expecting him to pretend to be also. The worst culprit of this, however, was Pinkie Pie. Any day that Spike went without seeing the pink menace, he was a happy dragon.

That did nothing to hide him from his own sister, however. Normally, the library was a quiet, peaceful residence where Spike could unwind. All of this changed, however, whenever Twilight would come home either by herself or with one of those idiots she calls friends. Spike would be fine if it was Fluttershy or Rarity, but if it happened to be Applejack or that blowhard Rainbow Dash, he would silently curse his luck at having to tolerate their company.

The conundrum that Spike faced, however, was that though he enjoyed the serenity of the library when Twilight was away, there was also the overwhelming sense of loneliness that accompanied the isolation. True, Spike did socialize with the Cutie Mark Crusaders or other people his age, and even some older or younger than him, but Twilight's company, though how much he loathed it sometimes, was irreplaceable.

Yet... There was another reason Spike wanted Twilight around.

Since growing older, Spike had begun to notice his sister in a different way. Twilight, having grown in certain ways as well, now garnered more attention the more she matured. Her chest measured in at a modest 32C, completing the 'slim with curves' look that Twilight had always wanted. The majority of the weight she gained, though, went straight to her rear end, which made her more prone to knocking things over when turning too quickly.

They were still considered siblings, and Spike would never taint that bond, but he could not help how she made him feel on certain occasions.  Spike, after much observation, concluded that it was not mainly Twilight's body or personality that attracted him, though they did play a role. What did attract Spike to Twilight, however, was the actions or small events that seemed to plague Twilight on a daily basis.

For reasons unknown, Twilight had been silently agreed upon by her friends to be the friend whom the others would greet in the most lewd ways imaginable. On more than one occasion, Spike had witnessed Twilight have her shirt pulled up revealing her bra, or lack of, her pants pulled down exposing her legs and underwear, her nipples being twisted resulting in a high-pitched squeak of surprise, and brutal spankings. On a certain occasion, which they agreed to never talk about again, Spike watched as Rainbow Dash marched straight up to Twilight, stick her right hand down the front of Twilight's pants, and grab her by the crotch. Only after the blood drained from Twilight's face did Rainbow remove her hand, taking a generous whiff of the scent as she did so.

That had been a good day.

After that, the group of friends decided to expand their horizons from Twilight to the rest of the group. Now, the friends greeted each other in what one could argue as 'sexual assault, but it's between friends so it's okay' ways. Spike silently thanked whatever deity existed for that. What Spike was unsure of, however, was what the reactions of the group would be if he joined in on their ritualistic greeting styles. Whether they scolded him, disowned him, or outright slapped him, Spike wanted to join in on the fun, if only to have an excuse to feel his sister's friends.

With the thoughts of his sister and his friends on his mind, Spike busied himself around the library, cleaning bookshelves, sweeping, and other menial tasks. He was content doing so, until he noticed Twilight coming down the stairs. After a long night of research, Twilight had slept in until the late afternoon, Spike silently noting that the clock read 3 PM. Spike watched his sister slowly descend the stairs, and was quick to make another observation.

Twilight, in her sleep-induced stupor, had forgone clothes covering her undergarments. Twilight walked down in nothing but a plain blue sports bra along with a pair of lighter blue hotshorts. Spike had never known his sister to walk around one step above being naked, but he was in no position to begin arguing. As he watched, he compared his own clothing choice to that of (or lack of) Twilight's. Blue jeans, T-shirt, and a gray hoodie, which was the norm for him.

Once Twilight had made her way down the stairs, she walked into the kitchen, more than likely attempting to make a pot of coffee. As she walked past him, however, Spike noted the bright red printing on the rear of her briefs.

Huh. Didn't know she owned a pair like that.

As Twilight disappeared into the kitchen, Spike was left with the mental image of her. That mental image quickly doubled from her to Fluttershy, then from them to the rest of her group, then to any other woman Spike had ever found sexually attractive. Before long, Spike became aware of the bulge in his pants, followed by his cheeks turning the slightest shade of pink. Refocusing his efforts on his work, a thought came to mind.

Well, if there was ever a time to try and greet her like her friends do, her being in underwear would be a good start, I guess.

With that, Spike set down the book he had been holding and began walking toward the kitchen. As he entered, he was just in time to see Twilight bent over reaching for something. Spike stopped in his tracks, taking in the sight before him. Twilight's rear nearly pushed Spike to the edge, almost forcing him to run forth and deliver a hardy smack.

Spike was patient, though. He knew an opportune moment would arise, but now was not it. Instead, he settled for watching Twilight's rear jiggle with every slight movement she made. Spike leaned against the doorframe, a smirk clear on his face. Whether Twilight knew he was watching her or not, he was unsure. At the moment, though, he did not care.

After a moment, Twilight stood up, a packet of sugar in her hand. She opened the packet and poured it into the cup of coffee she made for herself. As she turned to sit at the table, she saw Spike standing in the doorway. She smiled, though that action took some effort.

"Good morning, Spike. How are you?" She asked, walking toward the table. Spike, who had forced himself to stop staring, bore his now common blank stare of the morning, signaling that he was in a less-than-pleasant mood, as was the usual. He walked toward the pot of coffee, reaching into a cupboard to pull out a mug as he did. Mug in hand, he poured himself a full cup.

"I'm alright. How are you, Twilight?" He asked, walking to the table. He tried his best not to stare, focusing instead on the table itself. Twilight sipped on her coffee, looking to Spike. "I'm alright, I suppose. It was a late night studying, as usual," She set the mug down on the table, her thumb idly running across it. "I just feel like I'm forgetting something. Something important," She said.

Spike, with a chuckle, looked to Twilight. "I can think of a few things you might have forgotten," He said. Twilight snapped her head in the boy's direction, a worried look on her face. "What? What do you think it is?" She asked, leaning forward onto the table. Spike smiled, and sipped his coffee. As he set it down, he looked right at Twilight. "Your clothes?" He said, giggling at the look on Twilight's face.

Twilight froze. Remembering how she had discarded most of her clothes the night before due to her room growing rather hot, she was aghast to realize that she had waltzed down into the main room in only her undergarments. Faster than Spike could blink, Twilight's hands shot across her chest and crotch, face turning red as she did. Spike laughed, enjoying watching his sister panic in embarrassment. After a moment, Twilight stood from the table, and turned to leave.

Now or never.

Before she moved out of arm's reach from Spike, she felt a hard swat across her rear end, making her jolt in surprise. Her embarrassment turned to confusion, then to anger. She whirled around, facing Spike with a glare that could melt steel. "WHAT was that?" She asked, her tone less than pleasant. Spike, who had anticipated this type of reception, leaned back in his chair, smiling. "That's me saying I don't care if you walk around in your underwear. Just don't be surprised if I decide to mess with you."

Twilight was at a loss for words. On one hand, she secretly enjoyed the feeling of not having to worry about clothes, silently dreaming of the day when she could move about the library in her undergarments. On the other, she was more than familiar with how her friends greeted her, and was unsure of whether or not she would be alright with her brother doing the same.

In the end, she decided that one more to the list was not going to kill her. "Alright, I can live with you screwing with me like that. Just not in front of other people, ok?" She asked. Spike nodded, slowly leaning forward in his chair. "Thank you. Now if you'll excuse me, I have work to get done," She said. As she turned to leave once more, Spike leaned across the table, grabbing the waistband of Twilight's underwear. Before she could react, Spike released the waistband, enjoying the sound of the *snap* against Twilight's back.

Twilight yelped in surprise, stopping mid step. She looked back to Spike, who had a devious grin on his face. Twilight blushed, but smiled as she readjusted her panties. As she left, Spike called after her. "Nice panties, by the way!" He shouted. "Shut up!" Twilight shouted back. Spike leaned back in his chair, smirking.

This is going to be fun.

All throughout the day, Spike had worked on his chores. The only thing that changed, though, were the in between sessions of toying with Twilight. Such activities included:

• Spanking Twilight as she was bent over with one of the thickest tomes in the library.

• Rushing forward to twist her nipples as she stretched, resulting in a very flustered Twilight.

• 'Accidentally' dropping ice cubes down the back and front of her panties.

• And, of course, giving her a wedgie whenever he could.

Of course, Twilight did not mind. She had never seen Spike as happy as he was when they were playing like this, and that fact alone led her to tolerate the pranks. Of course, Twilight gave as good as she got. More often then not, Twilight would return the favor of whatever prank Spike played on her within a ten minute period. Though a small portion of her inner self scolded her for behaving in such a way, the savage side of Twilight enjoyed hearing Spike beg to be let go when she hoisted him by his boxer briefs.

As the day winded down, though, the pranks became more subtle. Spike slipping his hand onto the chair where Twilight was about to sit, grabbing a handful of flesh as Twilight just laughed and shoved his hand away, Twilight using her magic to pull Spike's pants zipper down. Throughout all of it, though, Twilight and Spike laughed, enjoying the feeling of bonding in such odd ways.

What Twilight was unaware of, though, was Spike's plan to end their working day. Twilight, who remained in her undergarments throughout the day, had had her panties tugged enough times to stretch the fabric out to a decent amount. Spike had waited till the sun had set and Twilight had closed the library to strike.

As Twilight sat at her desk filling out paperwork, Spike grabbed a spare rope from the basement and held it in hand. Silently, he crept behind Twilight, careful to make sure that he did not make a sound. At that moment, Twilight stretched her arms out, clutching them together to stretch her back. As she did, the feeling of her arms being bound made her eyes pop open, frantically looking behind herself to see her attacker.

Spike quickly tied her hands together, and hoisted her up by her armpits. "Spike!? What are you doing?!" She asked, panic in her voice. Her question fell on deaf ears as Spike dragged her over to the coat hooks at the entrance of the library. "Spike, this may be going too far! Please do-YOW!" She yelped, as Spike delivered a hard spank to her bottom. Once they reached the coat hooks, Spike grabbed the back of Twilight's underwear, yanking them up past the coat hooks.

Spike let go of Twilight, who fell a short distance before being caught be her own underwear. The pain in her bottom made her wince, hoping that either Spike would have mercy on her, or they would rip quickly. Her arms fell in front of her, her entire body slouching forward. Spike chuckled at the sight before him, enjoying seeing his sister in such a compromising position. Twilight groaned in pain, "Uuugggh... Alright, Spike, very funny. Now get me down," She said, looking to Spike with a pleading look.

Spike only rotated her so her rear end was sticking outward, and delivered another hard swat against her bottom, watching her flesh ripple at the impact. "Don't think so, Twilight. See you in the morning," He said, a wicked grin on his face. With those words, Spike began walking away from Twilight, heading up the stairs to his room.

Twilight was shocked. How could her own brother leave her like this? She yelled after him, "Spike! If you don't get me down right now, I'm going to get you back so hard!" Her voice echoed in the empty library. As the sound of a door clicking reacher her ears, Twilight let out a long sigh, preparing herself for a long night.

"I'm going to get him back so good," She said to herself, the pain ever present in the night.