As it turns out, a mare in heat is insatiable, and I don't know that my human body can keep up.

Fluttershy and I took a bath together. She showed me how to clean her feathers, and she was very interested in cleaning my penis. But then she frowned. "Why won't it, um, get hard? Don't you still think I'm pretty?" the last word was just a squeak, barely audible.

"It's not that, Fluttershy. Humans can't just keep going and going like that. We need time to rest."

She seemed disappointed only for a moment, wet hair drooping over her face. But then her ears perked back up. "Well, I'm still in heat." She leaned her forelegs off the side of the tub and shoved her hind end in my face. With a foreleg, she brushed her wet mane to the opposite side so she could look at me. "If you, uh, wouldn't mind that is."

Water dripped from the pink fur of her raised tail. Below that, her round anus, and below that, her marehood winked open at me. I could still detect her musk behind the clean smell of soap as she backed up to my face. I kissed her hindquarters, and stroked her yellow dock with my thumb. My kisses found their way to her vulva, and soon I buried my tongue inside her. Her legs went weak, but not so weak that she couldn't grind against my face. My chin, which by now had a good layer of stubble, brushed her clitoris, causing her to let out a moan. She bit down on her hoof while I began to gently lick her clit. Her scent was getting stronger, and juices poured out of her. I lapped them up greedily.

I wrapped my lips around her clit, sucking softly, then licked her again. I reached up between her legs, stroking and squeezing her teats, playing with her soft nipples. As she rocked harder against my face, crying out, I had to hold her by the legs to keep my face buried in her. "Oh, oh, Celestia!" she whispered. "Oh, lick me, drink me, oh!" She rocked even harder against my face, her ass humping up and down on nothing while I struggled to maintain my grip and taste her salty clit. She came prodigiously on my face, dripping down my chin, and moaning. As she relaxed, I kissed her ass gently.

She turned to me and smiled. "There, that was nice. Now let's get you all cleaned up."

Author's Note

I added some detail to this chapter.