Twilight Sparkle looked out upon the horizon, the morning sun shining brightly and bringing life to the town of Ponyville. Her friends had all gone home now, having talked and conversed with one another about all that happened the past night, and now all that was left was to move on and deal with the next day. Twilight yawned slightly, finally feeling the effects of being up all night – again – and desired to see her bed once more. She smiled softly to herself and was about to begin her walk towards home when she heard a rustle in the bushes behind her. As she turned to look, she saw only a blue blur as she was forcefully knocked to the ground onto her back, her legs sprawled out into the air as the figure pinned her on her back. Looking up, Twilight saw Trixie standing above her with a big, menacing grin and a large blush plastered on her cheeks.

“More...” Trixie spoke harshly as she pressed her body down roughly onto Twilight's. “Trixie wants more punishment for Twilight Sparkle!”

“T-Trixie!?” Twilight cried. “Get off me! I, what are you-mmph!” Twilight's eyes short open as wide as dinner plates as Trixie pressed her lips to hers forcefully, her tongue immediately pushing into her mouth. Trixie's kiss was deep and her tongue bat around hungrily while her lower body quickly began to pump down against Twilight's. In a desperate attempt, Twilight was able to push Trixie off of her for a brief moment and roll over onto her hooves, but Trixie quickly pounced right onto her back and pinned her to the ground once more.

“S-stop it Trixie! What are you doing!?”

“You and Celestia...” Trixie breathed into Twilight's ear as her hooves slid around Twilight's body. “Such force, such domination... that is what Trixie likes. That is Trixie's fetish! And Trixie wants MORE!” Using her magic, Trixie began to control her hair in a similar fashion that Celestia did to Twilight earlier and slid it into Twilight's mouth like a tentacle, pulsing it around while it acted as a suitable gag. Trixie's front hooves were slid back to Twilight's haunches and had them spread open with her flank pressed up between Trixie's back legs. As soon as the hair had slithered into Twilight's mouth, Trixie began to pump and grind her body forcefully against Twilight's once more, pushing her back and forth against the grassy ground beneath them.

Twilight was about to use magic to get her out, but her control of her magic quickly ceased as Trixie wrapped her lips and tongue around Twilight's horn and began to suck rapidly, bobbing her head up and down on it while her tongue lathered across the entire length. The sensation from this sent a rough wave of pleasure wrecking through Twilight's body, forcing out a suppressed moan as Trixie's hair continued to gag her. Hearing the moan, Trixie only picked up the pace as she sucked harder and faster while her body pulsed and pushed against Twilight more.

“You'll be Trixie's forever...” Trixie whispered deviously to Twilight. “You'll be all mine...”

Short Epilogue: Trixie eventually wore Twilight out and somehow brought her unconscious body to canterlot with her. Though Twilight's friends, including both princesses looked for her, nopony would ever see Twilight Sparkle ever again. Except for the Great and Lustful Trixie.

Normally there would be a few guards at the door of the room itself, but Luna had ordered them earlier that night to take watch at a post a bit further out, a post from which she could sneak by easily and gain access to her big sister's chamber of slumber.

Slowly, quietly, she gently pushed open the large door and took a quick peak around the room, making sure all was still and unsuspecting. Gradually she began to slip inside, first her right foreleg, then her left... using her wings to keep the door slightly opened... next her back legs, and finally her tail... after which she slowly closed the door behind her, making the door shut without even the slightest peep. Everything was going according to plan...

...Except, there was nopony in the bed. Looking over the bed carefully, Luna saw that there was no lump, no Celestia, no nothing! In fact, the bed hadn't seemed to have been touched all night, seeing how it was still perfectly made. Baffled, Luna emanated a soft light from her horn and looked around the room, revealing nothing but an empty princess's bedroom. That's odd... Luna thought to herself. I was sure Tia would be asleep by now... Luna quietly shut off the light from her horn and peeked out the door, seeing nothing around. She slowly began to slip out of the door when something pressed against her flank.

“Huh?” Luna said as she turned around, seeing Celestia standing behind her with her hoof on her flank. “T-Tia! I, uh, why weren't you...”

“In bed?” Celestia finished for her, lighting up her own horn softly. “Why Luna, my silly sister...” Luna could now see a large grin on Celestia's face, as well as her eyes which were open wide while her pupils were as small as black beads. “I wouldn't want to go to bed without you...”

In the next moment, Celestia wrapped her hooves around Luna and forcefully pulled her back into the bedroom, using her magic to quickly shut the main bedroom door and lock it.
The only sounds that could be heard from inside afterwords were first a quick second of screaming, then some muffled screaming, and then the sound of a bed creaking for about two hours straight.

Author Note: Yes, Celestia did prematurely turn into Molestia without Luna's aid. How? I guess it was just... her time of the millennium! *bricked* Anyways, wanna know what happened inside? That's for me to know, and you to find out in one of my Ponibooru Clop-Writes. (ask in the comments or private message for more info)