"I--I," her voice lowered, "I want you to fill me up with it. Everywhere. I--" she blushed "I don't ever want to stop. At least, um, until my heat is done. If that's OK with you."

I kissed her on top of the head. "Of course."

Satisfied, my cock shrank slightly, and fell out of her, making more juices spill out of her. She licked my nipple, kissed it, and softly kissed her way down. She lapped up everything from my balls and my shaft, making me hard again. "It looks like he still wants to play," she smiled at me.

Locking my eyes with hers, she slowly brought three quarters of my length into her mouth, with increased confidence. She choked on it, shutting her eyes, and came up for air while she stroked me with her forehooves. She went down again, gagging, bringing tears to her eyes as she forced it down her throat even longer. She came up gasping, "I want your cum," she told me. She playfully bit the tip before going down again, gagging, my dick past her tonsils. I gripped the bedsheets and locked my knees, tense with pleasure, trying not to force it on her more than she could handle. She bobbed up and down closer to the tip, then took it again, bobbing up and down even deeper. I groaned and panted as she came up for air again, looking at me with watery eyes. "Do you like that?" I nodded, unable to speak, and that seemed to please her. She started rubbing herself with a hoof. She smiled slyly. "If--if you wanted to force me down on it, I'm, um," she licked the head of my cock and kissed it, "I'm not really strong enough to stop you."

Message received. Shutting her eyes, she went down on me again, taking it as far as she could. I started thrusting into her face, but her head bounced up. I grabbed the back of her head and held her in place. She pinned her ears back, and her hoof slopped at her pussy more furiously than before. She really likes to be abused. Tingles of excitement ran up my spine and shot down into my balls. I forced my dick all the way into her mouth, the end going past her tonsils. Her throat tightened firmly around my dick, and spasmed as she tried to swallow. I brought her up for air, just for a moment, before making her take my entire length again, savaging her throat with my dick as I pumped deep inside her mouth. Tears streamed down her face. With my cock fully inside her muzzle, she managed to get her mouth open a little wider, licking my balls. After several more moments, feeling her muscles massage my dick, I let her go. She came up coughing, a wild look in her eyes, spit and snot running down her muzzle. as she gasped for air. She began humping at her own hoof, moaning, while she stroked me between her right hoof and left wing. My mind went blank and I grabbed her head. She only struggled a little bit before allowing me to push it in again, to violate her mouth. She choked on my cock again and again, and I let her up to catch her breath. Each time I pushed her down, I fucked more forcefully than the last, and she came up more red-faced and messy each time. I pushed her down once again. She licked my balls with my rod down her throat, and she came violently on her own hoof. With renewed focus, she held my asscheeks with her forehooves, and allowed me to push and pull her mouth up and down the entire length of my dick.

"I'm almost there--" I gasped.

I forced her down harder than before, keeping her near the base. She choked it down. My balls emptied down her throat as she gulped every last drop. I let go, finally. She brought her face up, breathing heavily, and frankly looking like hell--or as bad as such a beautiful pony could look, which still isn't bad at all. "Oh, sweet Celestia, Luna, and Discord, that was amazing." She just smiled, wiped her face with the sheets, and laid her head down on my lap. I stroked her mane and scratched behind her ear while we both drifted off to sleep.

Author's Note

11/19/2015: I decided to make it more of a masochistic throat-fuck fetish for Fluttershy here, giving power over to Jack to take charge and force it down her throat. I also added some detail and anticipation.