He was rock hard. My eyes widened a bit and I let out an escalating sequence of “Oh! Ohhh!” sounds as the first strokes forced me open. Even as wet and ready as I was, he felt thick and tight inside me. He has no notion whatsoever of taking things slowly, so my tank went from zero to way over full in an eyeblink as his strong hindquarters whipped forward. His furry balls were swinging and bouncing off my legs, and my breasts swung beneath me as well, slightly out of phase. They aren’t big, but they were tender and sensitive, and I just felt flat-out sexy with them swinging and swaying like that, my body transferring the impact as Lad’s furry belly flattened repeatedly against my ass. The soft fur rubbing my bare skin made the long shaft of dog dick seem all the harder up inside me. He made an involuntary little “wuff” sound right near my ear, and somehow that quiet, primal sound really got me, pushed me to a new level of desire. “All in!” I whispered. “Get it all in! Come on, boy!”
It wasn’t as if I needed to say anything — Lad was going to put it all in whether I asked for it or not. His feet danced briefly, shoring up his stance. The thrusts were still coming fast, but now each one made my opening widen and flex as the first swell of his knot popped in. The bulge dragged my lips out as he pulled back, then popped in again, each time just a little bigger than the time before. I heard another low “wuff! uff!” and though I can’t ever match his tempo stroke for stroke, I timed the next one and pushed back hard against him just as he drove forward. He stretched me wide open as his full girth slid past the entrance, and then it really was all in. My muscles instinctively squeezed the very base of him, tight behind the knot, holding us together and giving his body the signal to fill me with hot collie sperm. Since he’s already spraying and spritzing by the time he begins mounting me, I don’t really feel any one particular moment of ejaculation from him, but his motion changes when it’s that time. After a few last spastic shoves and tugs, he relaxed and let some of the weight off his legs and onto my back. His dick began a very steady, rhythmic twitch and pulse. The individual spurts are almost impossible to sense, but I was certainly aware of a gradually growing heat, and a sloshy sort of pressure which became more noticeable when I rocked my hips back and forth. This part gets really dreamy for me, as everything is super sensitive. Every little rocking motion, every tug, squeeze, and shift is amplified into shudders that go all the way up my body. I let my arms down so that my face was right at the floor and simply drifted back and forth over the border between pleasant, warm fullness and intense, quaking tremors.
Since our time was limited, I was keeping an eye on the clock, and I can tell you we stayed tied for just about eight minutes. That doesn’t sound long, but time stretches out when we’re locked together like that. I don’t know how he decides when he’s finished; sometimes it’s longer, sometimes shorter. Eight minutes was pretty typical. His body changed from a relaxed, steady weight pressing down on me to fidgeting and tugging, and as he pulled back, my opening swelled and leaked out droplets and streamers of still very warm doggy cum. I put one hand back so I could feel the bulge at my opening as he pulled back, and it was soon dripping with sweet, spermy collie juice. I gave him a couple of last squeezes inside me as he tried to release himself, and then helped him out with a little push. The knot popped through the opening, the rest of his shaft sprang out, and the dribbles and drops turned into a gusher that coated my hand and sprayed over the back of my legs. Lad tottered off to start cleaning himself up — he’s never been one to spend time cleaning me up, afterward — while I brought my carefully cupped hand up to my mouth and drank. I’m normally not too interested in my own taste, but I adore the taste of the two of us all mixed together and churned up. If I had a portal gun, I’d use it to get a close-up view of Lad pulling out, then dive in and lick myself out. Lacking that possibility, I licked my hand clean of the frothy, lathered cream that stuck to it, and rolled over on my back, staring off into space. Lad’s clean-up noises seemed to be coming from a great distance, even though I knew he was right there in the room with me. I was still just somewhere out on another plane.
I came back to earth with Lad nosing me gently. I sat up, and he sat facing me. I scooted closer to scratch his neck, ears and chest fur, and gave him a kiss on the muzzle. Under his belly, there was nothing to see but smooth fur. He dick was sheathed again, and I could just see the outline of his balls against the floor. Strange to think that their contents were now dripping out of me. I gave him another scritch and whispered, “Love you, pup.”
He stood and gave me another one of those imperative barks of his. It clearly wasn’t, “I love you too,” but rather, “Again!” I couldn’t blame him. I wanted more, too, and the clock said we had time for it. I gave my ass an experimental probe with one finger. As I expected, I was so loose and relaxed that it sank in with scarcely any resistance. My ass was hot for my dog, and my dog is always insatiably hot for a shot at his girl’s asshole.
However relaxed and receptive I may have been, I knew that “skipping the lube and hoping for the best” is not a great idea. I walked squishily over to my nightstand, where I keep a small tube of plausibly deniable lubricant, and took care of the necessary, if somewhat clinical, preparation.
This time, I knelt down at the side of my bed, resting my head and arms comfortably on the mattress. My arms still didn’t really want to hold my weight up, so the support of the bed felt good. Lad zipped around behind me without being called. He sniffed my pussy, and I wondered passingly if he could recognize the smell of his own seed leaking out of me. He gave it a few cursory licks. I could have enjoyed a much longer licking, but a border collie on a mission doesn’t get distracted by side issues. Two speckled paws went up on my back. For a moment, he stood tall above me, his pose the very image of confident male canine dominance. Then the paws came down with a slight scrape of claws along my side, and I felt his hindquarters start to jerk. In this position I couldn’t see underneath myself, so I had to imagine the first inches of pink emerging from his sheath, seeking an entrance.
My swollen pussy must have been a hard target to miss, because he hit it right away. He started humping wildly as soon as his dick found a warm spot. For a few seconds it seemed like he was going to top off my pussy with a second load of collie cum, like, in case the first quart didn’t quite get the job done. But just as I was getting ready to really settle in and enjoy the repeat performance, he slipped out of me on the backstroke. I winced in frustration. Before I could react, or reach back to guide him, another thrust came. I don’t know if he aimed deliberately, but the tip went just in my anus. I made a little “ah!” sound, muffled by the bedsheets. Then, without pulling back at all, he doubled up and bucked forward. Like I said before, he has no notion of going slowly. I couldn’t help letting out a surprised “oof!” and then, “ohmygosh” as a considerable length of dog opened my asshole and lanced up into my guts. Lad’s comment on the matter was a deeply satisfied “wurrff.”
(Now, you know very well that some of the details here are embroidered, or cobbled together from different experiences. Nobody really remembers every thrust and jab of a dogfuck in the kind of detail that makes a good story later on. But that blitz-fast, two-stroke changeover from pussy to ass burned itself into my memory; that was a new one.)
When Laddie gets it in my ass, there is a very faint ache at first, but nothing really painful (and as much as I like pleasing him, I wouldn’t go for it if it hurt). Once he enters, there’s mostly just an overwhelming need to get him buried deep, and the faint little twinges as he pushes in are like progress markers. I had positioned myself so that I’d be looking across the bed at the mirror, and I saw Lad’s head over my own with a wicked doggy grin as his fur rippled and his shoulders flexed. I loved the way we looked together as partners, something I had never gotten to see clearly before.
Evidently happy with where he had his dick now, he dug in and let me have it. He didn’t come anywhere close to slipping out again, preferring to keep the strokes short and fast. In the mirror, I could see the tip of his tail bobbing and weaving around his back end like a chaotic pendulum. Still, he kept his dick moving in and out like a piston, with a remarkably steady cadence for the pace he’d set, and my body warmed to the rhythm. I watched the mirror, fascinated, seeing a glow of pleasure bloom on my own face as Lad’s eyes gleamed and his fur rubbed the length of my body.
My hole stretched and squeezed around the growing ball of Lad’s knot as it traveled back and forth. It would slip all the way inside my tight ring of muscle, which contracted behind it with a deliciously satisfying snap of closure. Then he’d pull back, making me stretch even wider, taut and tense; then sink back in again. The tip, meanwhile, was hosing my far inner regions. Each push and pull produced an accompanying squelch and slurp as copious dog sperm accumulated, saturating the passage. My cozy little bedroom, which had smelled at first of pine, was acquiring a slight but definite whiff of assfucking as well.
His knot was surely at full size, but he hadn’t settled down yet. He was still trying to push and pull it inside of me. I gave him a real hard ass-squeeze behind the knot as he went deep, and whoops! I was wrong. He hadn’t been quite full size yet after all. I don’t know if the Christmas spirit made him grow a few sizes that day, or if it was the result of the long pent-up horniness, or what. In any case, when I clamped down on him, his body stilled and he swelled perceptibly to what sure seemed like previously unreached dimensions. I raised my head from the blankets and checked the mirror. His expression lost all its intensity and glazed over with bliss. I had the impression that his brain had dissolved into happy fog and was abdicating any further responsibility, allowing his balls to take over and finish the job. My own face looked shellshocked — sweaty and happy, but stunned. Collectively, we made a picture that you’d probably caption “fucked into oblivion.” I really wanted to take a picture, but thankfully I had just enough brains left to recognize that as a bad idea. I had also deliberately set my phone down out of reach.
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