How’d it come to this? Why’d I agree to do this? Why… am I enjoying it so much? I guess it’s fate that’s made this happen, since I was the one who would punish my lovely wife for longer than a pony should have to suffer through sex that now I’m on the receiving end. Remind me to write in my book that Princess Twilight can suck my teats.

We got into a little fight and I ran away before it got worse and slept with my friend. Should have been a simple talk or twelve and we’d be back to where we were; happy and in love. But she had to run muzzle to chest into Princess Twilight who looked at my naked body and the mare crying, galloping from the house, and made a poor judgement call and turned me into a mare. An earth pony, like Sil, but a freaking mare?!

‘The spell only lasts a half day’, she apologized. Like that would bring my body and penis back to me. But then, to make things fair, she granted Sil’s request to be a stallion for the day. Kinky shit, yeah.

I stumbled home like a heart broken drunk and once I was inside she stopped laughing at me, along with a third of the town that sang a song about fairness and equality, harmony and balance… whatever the shit. I had no defense against Sil when she nipped my ear as she was helping me up.

She sniffed me several times and I felt the urge to pee, so she gladly helped me to the bathroom and all that… then she sniffed my crotch, or plot, now. She shivered like I used to, had only a couple hours ago before I dove, balls deep, into Amber. Then she said the words I never thought would terrify me in my life.

“You’re in heat, honey.”

That was it. We both lost sense and started kissing. I was on pure animal instinct, using my muzzle and tongue to send shivers through Sil’s stallion body. The scents we were making, I was making, was driving her, him… him mad with lust. Was I so bad when I was turned on? I looked to my wife/husband’s tail and saw it swing beneath him. A huge pony cock.

I was repulsed and intrigued at the same time. I could feel a throb in my rear area and the thought of what I had and was probably going to get scared me on a male level yet, there was a burning desire to know what it felt like for a mare in heat to be fucked. Sil pushed my withers down and I collapsed to the floor and was face to flared head.

“You’re my mare, now. Suck it,” Sil told me. I closed my mouth and clamped my teeth shut, but she started poking me in the nose with it. “You owe it to me, so be a good wife and do your job.”

Shit, I said that to her a couple times while we were role playing, now she’s making me do it? It’s not fair!

I feel defeated in a new way and let my lips part as she looks down at me and presses her cock to my lips and I let it slide into my mouth. It’s soft, yet hard. Salty and musky. And it’s, Celestia forgive me, delicious. I feel like it’s a salt-lick taffy stick and I want the filling in the center. I lick and suck her and realize that ponies have no gag reflex as she pushes deeper down my mouth into my throat and I start to choke from lack of air.

“Oh, sorry! I forgot, please, don’t be mad,” Sil apologizes as she pulls back and out, leaving me gasping for air.

“Put it back,” I whimper. I don’t even know who I am anymore. I’m a man who’s solvently heterosexual, yet a mare who’s craving cock like a horny slut. Oh, god. I’m Amber!

She asks me if I’m sure and I open my mouth and don’t say anything. She obliges my desire and this time I do the work of giving her my first blowjob. I swear, this isn’t homoerotic, it’s just a mare who was a man performing fellatio on a stallion that was his mare. Totally normal sex stuff that my readers will understand, right?

She moans and I know that moan. I have no desire to taste the seed of life so I reluctantly stop and swallow the massive amount of saliva I’ve got going and move to stand, only to have her press my withers down again. “Finish, I’m almost there as a stallion and I want to know what it’s like.”

Holy crap she’s really bossy. It’s such a turn on to be commanded by such a strong stallion. I nod and resume my oral attack, while in the back of my mind I’m fighting myself. I shouldn’t be loving this so much. I shouldn’t be trying so hard to please Sil, but I feel it’s my job to make him happy, plus it feels good, somewhere in my chest I feel like I’m accomplishing something by making Sil come.

I take in a deep breath and take the black and white cock as deep as I can and hold my hooves to the floor as he thrusts once, twice, three times into my mouth. I feel his sperm in my throat, thankfully past where I can taste, and then I back up quickly so I can breathe again. I’m not so lucky as Sil squirts one last load onto my muzzle and left eye. I cough and some of his seed flows into my mouth, making me taste it.

It’s just like Amber described. Salty, with a hint of sweetness. And, oh no… I do want more. I swallow and lick my muzzle like mad. This is horrible. I’m fighting to please my wife and loving every second of it. Is this what it’s like for her? I want to ask but I’m too busy whimpering. My new pussy is aching for Sil, and I see that grin on his broad face. He knows it. Shit does he know it.

“Turn around and lay on your back.”

I look up and nod to him. I’m his mare, I’ll do as I’m told, as long as it’ll make him feel happy and fill my burning desire to come. I lay back and curl my legs to my body, my tail aside as instinct commands, even though I’m totally exposed. It’s actually tingling so much it hurts a little. I need to release this feeling.

Then Sil lays on his belly and licks my nipples. Oh, it feels good. He presses a hoof on one and leans down, sniffing my aching area. Crap, I didn’t expect to actually have to be penetrated with that dangling participle! Oh my… That’s what it feels like to be eaten out? I’m gonnado this more often once I’m a man again to her.

Oh wow, it’s totally good. “Right there,” I moan as Sil knows exactly where to lick and where to apply pressure. One hoof on my teat, one on my pussy lips and pressing where my clit is, pushing it to her tongue. His tongue. Celestia, I don’t care what the vernacular is, just let me come! I can’t help but move my hind legs as s/he licks deeply inside me and I feel the pressure of that tongue entering my vagina.

With a mighty swallow Sil stops and in a deep voice, whispers to me. “Am I doing good?”

“Don’t fucking stop!” I say in a threatening way. I now notice how feminine I sound. It turns me on a little more to hear that and to see the smile on Sil’s face as the licking and hoofing resumes.

I feel it in my pelvis and growing to my belly. This’ way more than I ever felt as a man. This’ intense and it’s growing in strength. I can’t stop moaning in my soft voice, rocking my hips and moving my legs as the warm tingle grows and I feel a soft pressure inside my pussy. Sil knows it’s coming and keeps doing the same thing. I’m crossing the threshold! “I’m coming, oh gosh! Oh my gosh! Oh,” I squeal and I sit up and the rush of orgasm flows through my body, “my,” I grunt as I fall back and sit up again during the next wave, “gosh!” I scream and whinney as I fall back, spent.

The tingle now is across my hind legs and in my loins, my winking pussy. I can feel it winking and it’s just pushing the orgasm on. I feel the urge to scream and cry, in a good way. This’ what it’s like to be a mare, a woman, a female orgasming? I think I can do this more often. The world turns fuzzy as my eyes water and Sil lays next to me.

“That…” is all I can say before he pushes me over.

“Was amazing? Now you know why I love it so much when you do that to me. Now, my turn.”

“Again?!” I ask weakly, but in surprise. I’m on my belly and spent. I can’t resist as he mounts me and my hind legs move under me, pushing my rump up as I fight the urge to yawn, to sleep.

I feel him poke at my leg, then slide along my underbelly. “You need to work on your aim,” I tease. Then it hits home. I squeak in pain as he pushes inside me. Forcing my virgin hole to take all of the meat he has to give. It’s more than I have to offer as a man, to be sure. Sil nickers and stops halfway.

“Are you okay, honey? Does it hurt? Do you want me to stop?” His deep voice vibrates my ears and I clamp tighter around his cock.

I shake my head. I know it’s bad to lie, but I need to make him feel good. It’s my job as a wife to please my stallion.

What the hell am I thinking?!

He slowly pushes deeper inside of me and it kind of burns, but feels good in a way, too. I’m really glad Sil’s a pony and not a human, because seven times, in and out, and he comes in me. It stings and I can’t wait to be free of him, but I smile as he whimpers and whines at how good that felt.

Before I know it, I feel alone. Like, a part of me was taken away, and I kind of want Sil back inside me. For a first time, for both of us, it was really good, overall. I kiss the stallion beside me and nuzzle him as we both yawn and begin to fall asleep.

“If you got me pregnant, you’re in so much trouble,” I say.

He snorts a laugh. “Then it’ll be our family secret, okay?”

I feel sleep grabbing me and pulling me into itself. “Yeah, okay,” I whisper softly.

If this is what females feel when they come, I can do this gender swap thing more often...

Author's Note

So, I've never read or written a gender swap story before, so any comments are appreciated!