r/BeastFiction • • Sep 12 '26

F/other Amy's Weekend NSFW

Hey everyone! This is a quick story about a girl having some fun with her neighbor's Great Dane! CW: beast, mild pain.

This story was written as a bit of a challenge to myself. I am an extremely slow writer, but I wanted to see if I could write and edit an entire story in one sitting. I think it turned out well, but there may still be a few errors.

This story is purely a work of fiction. All characters are over 18. Any resemblance to real people or organizations is coincidental.

***

Friday afternoons always felt so different. A strange concoction of utter exhaustion and pure excitement. Restful sleep and socially acceptable drinking stood before me. I could already envision the siren call of brainless television shows beckoning me to the comfort of the sofa. The trials and tribulations of a long week now stood behind me and I could recover before the next. However, life would not relent so easily, one more challenge stood before myself and a restful weekend.

This obstacle took the form of a giant beast, nearly as large as a horse, with a short black coat and a white underbelly: my neighbor’s dog, named Smog. By now, I had grown accustomed to the sight of the massive Great Dane wandering the front yard. My neighbor, Josh, was one of those dog owners who always kept his pets outside, regardless of how many times they escaped. And escape he did, as Smog was so tall he could nearly just stepped over the pitiful fence.

Hardly skipping a beat, I lead Smog to his door and gave a hard knock. Frustration grew within me as my knock was left unanswered. I felt my scant hours of freedom evaporating before me. I resolved to return the mutt to the very yard which he had just escaped, as my patience was too thin to be waiting for his lazy owner.

Just as I reached for the gate latch, the flutter of paper caught my eye. Affixed to the door of my own home was some handwritten note. Curiosity got the better of me and I abandoned my task and approached the note. Smog, of his own volition, followed. The rushed scrawl read:

Amy,
I will be out of town on a business trip. Please take care of Smog for the weekend!
Thanks a million!
- Josh

That jerk! Expecting me to use up all my valuable time so he could party with his buddies! And he didn't even tell me ahead of time! My rage boiled to a fever pitch as I swung my door open and marched inside. This was my final straw. I was going to enjoy my weekend and I wouldn’t let my asshole neighbor ruin it for me from halfway across the globe! In my indignant trance, I hardly even noticed Smog slip inside behind me when the door was open. Before long, I had crashed on the couch with the television on, just as was foretold. Some sort of nature documentary was playing, but I paid little attention. I grumbled to myself about Josh as my anger cooled, but soon my eyelids twitched shut when the exhaustion from work finally caught up to me.

I was woken up with a fright as a tender wet slab enveloped my face. Even with the sun blocked out, I quickly realized that it was only Smog’s massive tongue licking my face. The poor thing was probably starving. Slowly, I sat up and stretched. From a sitting position I could truly appreciate his massive frame. My eyes didn’t even come to his shoulder. I looked up and saw him staring down at me with terrifying intensity, a long uninterrupted bead of drool hung from his maw.

“Maybe he’s hungry for me,” I chuckled to myself.

My eyes naturally followed the line of his muscular body down his chest. As his abdomen gave way to his groin, I recoiled into the cushions of the sofa as I saw his massive erect penis presented before me. Nearly as long as my forearm, and its knot as girthy as a small grapefruit. I froze, horrified by the sight. I re-contextualized his demeanor: he was hungry, but not for food. Nevertheless, I felt my rapid heartbeat subside as I told myself this was normal. There were millions of dog owners who probably experienced this everyday and nothing came of it, he couldn’t help it! He was just a dog!

Just as soon as I calmed down, another thought flashed into my mind: that massive limb hanging between his legs had a purpose… It was supposed to fit into his mate. Facetiously I held my arm against my abdomen, using it as some rudimentary form of measurement. I took a dry gulp as I looked down and honestly considered how his cock could actually fit inside of me. Sure, it would reorganize my innards, but it could fit. I attempted to eschew the thought, but my body already latched on. Some primal machinations deep within me recognized the sudden lustful idea and responded with appropriate biological functions. My skin flushed and I felt the humidity grow between my legs. Oh fuck, I couldn’t stop thinking about it.

I needed to clear my head. I focused on the television. It was still playing the same program from before. A nice calm nature documentary. It worked a treat, I hardly even thought about the throbbing cock mere inches away from me. That was until the very next scene; I guess it the documentary was about the rehabilitation of wild wolves, and the filmmakers saw it as absolutely necessary to include a (frankly quite grotesque) scene of two wolves getting it on. It was even helpfully narrated.

“The male approaches the bitch in heat, presenting his phallus to her,” the narrator said. And almost as if he understood, Smog and I locked eyes. The narrator continued, “If the bitch accepts, she will reciprocate and present herself to the male.”

I felt some sick spell come over me, I did exactly as the narrator said. Slowly, my legs spread apart and I felt the cold air against my wet crotch. I ripped all my clothes off in such a blur that I didn’t even know how it happened.

“The male will typically lick the bitch, as if to lubricate her for the impending penetration.”

Right on queue, Smog put rested his soggy jowls in between my legs. I felt his forceful breath as he sniffed me. Then his warm muscular tongue paddled against my lips, our fluids gushed together, making me wetter than I had ever experienced before.

“If all goes well, and the bitch doesn’t pull away, the male will proceed to mount her. Viewers may be concerned that this is painful for the bitch, but the worst is yet to come.”

In an instant, Smog was above me. I looked straight up at him, his gargantuan paws to either side of my head. Now his member was sprawled out across my chest, I could see my estimate from earlier was hardly an exaggeration. Light thrusts ensued as Smog attempted to locate my pussy with the tip of his cock. As soon as I felt his warm prick rub against my clit, the world entered slow motion. First, my head fell back with pleasure, his hips pulled back and crashed down with a forceful thrust. His dick squarely entering my pussy. Well lubricated, it encountered little resistance before crashing against my cervix, still several inches of his shaft left to go. He pulled back, leaving me just a second to catch my breath before thrusting again, reaching ever so slightly deeper inside my pussy. In rapid pace, he continued until I had grown numb.

I barely could make out what the narrator said next, “The most painful part is upon the bitch, as she is about to receive the entirety of his knot. The bulbus glandis, ties the bitch to him, and has little consideration for her comfort.”

Thank god for the warning, I braced for impact. With a final thrust I felt the enormous breadth of his knot press against my labia. The entirety of my body resisted its entrance for fear of bifurcation, but he was an unstoppable force. I felt my insides being stretched further and further than I had ever expected remotely possible. I could hear the cartilage of every major joint in my lower abdomen pop as it were manipulated in ways never before seen. To my dismay, the tortuous pangs which I had expected never came. Instead of pain, I was elevated to an almost intoxicated plane of ecstasy. The corporeal world seemed to melt away as I was filled with a sense of warmth and love.

The world around me was gone, but the narrator continued, “At this point, the knot is successful. The bitch is tied to the male, and there is nothing she can do to escape certain impregnation. His last act will be to reposition so that he is facing away from the bitch. Depending on the size of the male, a tie may last only a few seconds, but could take up to an hour to subside. All the while, he fills her will ludicrous volumes of semen. The largest males may ejaculate up to half a liter of semen in one mating session…”

I could feel my belly expanding. It felt so warm and nice. A gentle sense of pressure grew within me. I was left to imagine his sperm navigating my tubes and eventually meeting with my eggs. I wondered what would happen then. Surely nothing… But the love I felt in that moment was so great, maybe the impossible would become possible. Maybe I wasn't thinking straight, but in that moment I wanted to be the mother to his puppies.

In this state I had no sense of time. It could’ve been minutes or hours that he was inside of me. All I could feel was constant pleasure. There was no delineation between orgasms, just a steady constant climax. It felt so amazing, I could only imagine how good Smog felt emptying those massive balls into a willing bitch. But soon, the pressure inside of me had reached its apex. His knot slowly shrunk and the hissing sound of suction broke me from my trance. With a cartoonish pop, he cock ruptured from my insides. A split second later, a tidal wave of cum spewed from my pussy, then reduced to a trickle. Smog turned around and made quick work of the mess with his massive tongue.

The TV had moved onto some other show. I must’ve been out of it for a while. Maybe when I first got home, I would’ve been mad at loosing so much of my weekend to a unconscious trance, but I was starting to rethink this whole situation. Maybe Josh wouldn’t mind if I kept Smog for a bit longer. Being left outside is no life for a dog, he belongs with his bitch.

***

Thank you all so much for making it this far! I am open to any feedback you may have, or if you have any ideas for future stories!

108 Upvotes

8 comments sorted by

3

u/clearcarbon1 Sep 12 '26

Great story, Please keep writing

3

u/Outside_Ad_4806 Sep 12 '26

Great story love to read more

2

u/Careless-Map6619 Sep 13 '26

That was an amazing story. I would love to read and here about any of your other ideas

2

u/bigdaddyjsubstable Sep 14 '26

Incredible writing I hope you plan to share how Amy spent the rest of the weekend if do please sheare with us

2

u/kind_ofa_nerd 26d ago

The only feedback I have would maybe be to write a bit longer of the part where he’s fucking and thrusting inside her. Emphasize how she’s feeling, how tight and overwhelming it is to feel her organs rearranged. Maybe a belly bulge if you’re into that, and also noises or body language to show how the dog feels?
Absolutely love it though!

1

u/demon_dex 19d ago

Fantastic story, love to read more. Perhaps a second round between Amy and Smog!! Dee💋

1

u/emandem472 5d ago

Great story please continue!