Preliminary warning before reading: this story has scatological nuances.

I got up early to go for a run. Well, that was the excuse to "get away" from the family. I am very athletic and running is part of my regular training.

I didn't have much time to get ready: the walls of the apartment where we were staying with my family allowed little room for privacy. So I washed my ass as well as I could under those conditions.

Once on the street, I sent a message to my occasional Master, my pulse quickened and my cock got hard. I could feel it hot under my running tights.

I started running, at that early hour the air was still cool. I would soon reach the campsite where my Master was staying.

We had known each other online a couple of days before and we both knew what we desired.

Upon arrival, I entered. The atmosphere was calm, typical of a summer morning. I searched for his bungalow and soon saw the slightly open door.

The procedure was clear: upon entering, I would close the door, undress, get on all fours, and say: "I am ready, my Master."

I crossed the small porch that led to the bungalow's interior and closed the door. There was no one there.

Did I get the wrong bungalow? I thought to myself, but there was no room for error.

I took off the little clothes I had: t-shirt, tights, and socks.

- I am ready, my Master.

As I said it, the door to the next room opened, and I heard:

- Hello, bitch.

His hand grabbed my testicles tightly and ordered me to be absolutely silent.

Immediately after, he stood in front of me and almost without revealing his face, his body, his smell... he said:

- Do your job, slut.

His flaccid cock touched my nose. I opened my mouth, stuck out my tongue, and used my best skills to get it hard.

Soon the result came in the form of an erection.

- Enough, slut. Now it's your turn to bend over.

I was absolutely eager. My Master stood behind me, felt my anus with his fingers, and started laughing slightly. He put a dog collar on me, holding the leash that pulled me and made me have my ass up.

Next, he pushed his cock violently into the entrance of my rectum. Despite not being lubricated, it gave way and let his whole cock enter all the way in. A horrible pain made me unable to contain a scream and I tried to escape, but a pull of the leash made me return to "my place."

- Shut up, slut, you came here for this.

And yes, it was true. I was there to give my ass and provide pleasure. So I closed my eyes, gritted my teeth, and tried to channel the pain. It was a very intense few seconds where my body temperature rose exponentially. But the pain subsided, and my anus quickly adapted to its new situation.

- Now it's time to eat, slut. - My Master said in a teasing tone...

Mmmmmm, I thought. I've always enjoyed alternating betw...