prompt: changmin’s fetish for kyu’s butt, from anon a.k.a the drabble that turned into a smut monster 

i have no idea how this turned out so long. it was just supposed to be a small thing and then it ran away from while cackling and flinging adjectives for various sexual reactions at me. it does get quite smutty, so i cut it. hope you like it, anon!

warning: rated r; fingering

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“ow! what the hell are you doing down there?!” 

“shut up,” changmin replied lazily, nosing his way down kyuhyun’s spine, nipping idly at each vertebra, a little harder than usual. “you should be thanking me for doing this at all.” 

kyuhyun snorted and pushed up to his elbow so he could look over his shoulder. “what, having sex with me? cho kyuhyun, he of the caramel macchiato voice and delightfully tousled hair?”