“Why do you spend so long brushing your coat?” Sweetie Belle asked when her sister finally came down after her morning ritual, “I get why you do it with your mane, but your coat isn’t in a special shape, it just lies flat. Mine only goes in the bath and it looks the same.”

“It’s not just about how it looks, dear. We’re talking about perfection; my coat has to feel just as good as it looks. It feels like spun silk, not coarse and greasy like most ponies’.” Rarity smiled to herself and preened a little. She was not modest about her appearance, but she was not as arrogant as many thought that she was. She merely made a point of being exactly as critical of her own appearance as she would have been of any of her creations, and so she was frank about how utterly stunning her body was.

Sweetie came up beside her and nuzzled her curiously. The fur against her nose was indeed very different to her own, cold and sleek where hers was fluffy. The long brushing had also cleared it of all soapy taste. She started licking it into little curls to try and get a rise from her sister. It was a game they played often: she would tease Rarity, and Rarity would pretend to find her ‘insufferable’.

“Stop that, Sweetie. It took a long time to get it that way.” The designer edged her playful sister away and started to walk to the front door, only the slightest hint of annoyance in her voice. The unsatisfied little filly couldn’t resist winding her up a little further. She cantered after the mare and gave her one last hard lick. Rarity shrieked and kicked her away.

What in Equestria? Why had her sister flipped like that? That kick had really hurt. Her front legs had fallen to their knees at the shock, and now they wobbled as she rose back up. She looked tearfully up towards her gushingly apologetic sister. She saw, to her horror, that Rarity was neither gushing nor even apologetic; the cruel mare was glaring daggers at her. “Go to your room. Now!” Sweetie had never heard anypony but Twilight achieve nearly such a harsh tone.

+++++

Sweetie Belle was distraught. Why was Rarity so angry? She mustn’t have been herself, to use one of her own expressions. But why, when Sweetie had been doing exactly the same thing just seconds before? The only difference was where she had licked. She sat and stared down between her hind legs. Did that … hurt? How could it, when sitting down on it didn’t? She had to know what had gone so badly wrong with her lovely sister. The most perfect mare in all of Equestria couldn’t be so beastly without good reason. Sweetie must have done something horrid to the one who she loved even more than anything, but she didn’t understand what. Her tiny chest felt like it was being crushed, and she knew that it wasn’t because of the kick. She gingerly reached down with her tongue.

The folds of flesh under the fur surprised her for a moment, but then she remembered feeling them on Rarity before a sharp kick in the ribs had made her forget. They weren’t anything to worry about. Still, it didn’t hurt. Was it because she had licked Rarity so much harder? She would try again, but harder, even though she was sure it would hurt like fire when she did it right. Maybe it wouldn’t be too bad if she just kept doing it a tiny bit harder each time. She could stop as soon as she had felt it herself. She just had to know what she had done to Rarity.

Soon she was snuffling away industriously between her own hind legs, whilst doing the same to her sister looped endlessly in her mind. How could Rarity have hated Sweetie making her feel like this? Two of her little hooves were twitching in the air above her. She soon reached her climax and was taken completely by surprise when a hot jet shot up her nose. Her hind legs went into spasms, she jerked her head back, she spluttered, she sneezed explosively, and she did it all at once. Between it all she actually kicked herself in the side of the head, quite hard.

She felt great, but she was still clueless over Rarity.

Author's Note

Short 'n sweet, just like its subject matter.