I could tell from the look in Erin’s eyes as she stared daggers at me that I was going to pay for this later, but somehow that just made it funnier.

I chuckled and flicked the buggy whip across her magnificent ass, shouting, “Giddyup, pony!”

My girlfriend flinched and tossed her head just like a real angry pony. She was on all fours before me wearing nothing but a thong, a bridle, and a bit gag. I had wrapped her fists in plastic wrap to turn them into hooves. It’s amazing how dehumanizing it is not to be able to use your fingers.

We were nearing the end of a dungeon session with a client, one in which Erin was being forced to be a pony and I was her trainer. The client had no idea that we were dating when he booked a double with us, but as he watched from a throne across the room, he had to know there was something between us.

Erin looked back over her shoulder at me, and though she couldn’t speak with a bit between her teeth, she was making me a promise of payback when we got home. My stomach flipped in anticipation as an image of what was likely to happen flashed in my mind: Erin would wait until we got in the door before pressing me up against the wall and holding me there by the throat as she teased her way down my body. We were both naturally dominant, so there was always a power struggle and I never knew who would finish on top — I only knew that we would both finish.

There were only minutes left in our session, so I decided to take advantage of her being so deliciously vulnerable. She was unlikely to ever allow this again. The one other time we had done a double session with a client, she had tied me down and tickled me until I screamed. Some humiliating pony play seemed like a fair turnabout.

I pressed myself up against her ass and pulled her head up by her bridle, holding her in place. I reached my hand down and around to massage her clit. I was flirting with breaking the rules, but my client wasn’t complaining.

I nipped her earlobe with my teeth, making her try to pull away, but I still had her by the bridle, so she couldn’t move.

Erin was the first woman I had been in any kind of relationship with, and though I had a few drunken girl-on-girl experiences over the years, she had been the one to really teach me how to please a woman. Before her, I just assumed that all women wanted to be touched the way I touched myself, but I had discovered that there is a different rhythm and stroke that works for each of us. I knew she wanted me to grind hard against her clit in a rapid side-to-side motion, but I would save that for later. I circled gently and slowly, savoring the way she was panting against me. 

I nipped her earlobe with my teeth, making her try to pull away, but I still had her by the bridle, so she couldn’t move.

“Neigh like a good pony and I’ll reward you,” I said without even trying to keep the amusement from my voice.

She made a convincing horse noise and tossed her hooves in the air.

True to my word, I ground harder against her clit, eliciting a moan.

“That didn’t sound very horse-like,” I whispered into her ear.

I couldn’t see her expression, but could sense the tension and frustration in the way she tried to toss against me again.

“You’ve been a good girl,” I cooed. “Why don’t you go and get your reward from our master?”

I released my grip on her bridle, allowing her to trot over to our client and nudge his knee with her head. He unfastened the bridle and removed the bit from her mouth. Erin whinnied in appreciation even though I knew she was hating every second of it.

He extended his hand with a sugar cube held in the flat of his palm, and Erin took it between her teeth, crunching it appreciatively.

Our client thanked us and left. Erin waited for the door to shut before silently extending her hooves for me to cut the plastic wrap off. She didn’t say a word as we cleaned up and walked back down the stairs.

Turns out I guessed wrong. She didn’t punish me when we got home. She didn’t wait that long. As soon as I stepped into the dressing room, she grabbed me by the hair and pulled me back against her in an echo of what I had done to her upstairs. Her hand slid down across my waist and pressed against my clit. I was already so turned-on that I groaned and leaned into her.

“You better be quiet or we’re going to get in trouble,” she whispered before moving her fingers in a frantic rhythm that made me want to be anything but quiet.

I was about to come and she knew I wouldn’t be able to stay silent, so she let go of my hair and wrapped her hand around my throat. I climaxed with a silent scream and collapsed onto the couch as she released me.

“Don’t think this is over,” she said. “I’m going to punish you properly when we get back to my place later.”

I was still too busy trying to catch my breath to come up with a witty response. I simply grinned and felt her lips curve into an answering smile as she kissed me and we both started to giggle.

I knew she would make good on her promise of retribution. And I couldn’t wait.

Photo: Tommyo/ Model: Miss Agavi/ Latex clothing: Venus Prototype Photo: Getty Images/ Found Image Holdings Inc