Kings jazzing penis and gigantic knot was calming down, its harsh destruction of my womb and prostate finally subsiding. But the ache of shooting off dozens of times along with the uncontrolled grasping constrictions of my asshole from my orgasm, coupled with the agonies the heavy mass contained within my lower bowels wrecked on me was radiating all throughout my hips. The big Dog laid on top of me, completely drained from pumping the quarts of cum he’d released into my boy-womb. My swollen fertile belly was firm and distended by the volume of his release, I was his bitch to be bred full. If only I could carry his whelps! His panting slowed and it felt like he was gradually getting smaller, my ass-ring finally able to slide down his enormous knot and around the stiff stem that connected his furry loins and his bestial penis still contained within me.

My load I had basted us with was drying cold and sticky on my legs and cock. I rose up slightly with the Dog still on my back and peeked down at the floor beneath me; there were big puddles of milky goo all over the carpet and my thighs shone wet with my own copious spunk. The panting Canine rested heavily on me, his full weight supported on my back, both our back legs shaking in fatigue from our long bout of sexual intercourse. The fact that I was holding on to Genes hipbones, leaning on the couch, and had my ass suspended in the air by the root of an embedded doggie-dick were the only reasons I didn’t tip over.

Gene pulled my right arm up his and straightened me up onto his lap again. “I think you both got off, now it’s my turn. Suck me off Big Brother” while returning his firm erection to my mouth once more with the other hand. I couldn’t help that the horny Mutt fucking me had monopolized my attention, but now I did feel a little bit guilty so I began to work on my sibling’s dong with earnest, trying to please him. Licking now on the right side and middle skin under his cock, brushing against the frenulum on the flesh just behind it where I knew it wouldn’t take long for him to cum, I made it my mission to bring my kid brother to orgasm.

Soon I was rewarded with a steady stream of adolescent semen that trickled from the boy’s stiff fevered penis, my saliva lubing my urgent oral ministrations on him further. I didn’t realize King was watching my brother while I worked him off but when Gene started to moan the animal let out a whine and pulled me hard backwards, trying to pull himself up closer over me to the both of us. His unit had shrunk somewhat so it pistoned forward like a plunger through my colon, I felt the warm tide of his jizz enema flooding its way higher up into my now fat low-hanging tummy.

The taste of salty cum became apparent as the human dong in my mouth began to twitch deliciously and spasm. Gene held my head right in the one spot I was tonguing and slowly moved his pelvis up and down slightly,” Oh yeah…..I’m getting there….I’m getting there….” I felt his Pee Dee growing bigger,” I’m getting there,,,,” I swirled my tongue harder and a little faster,” Oh, oh…oh,…OH!” my brothers hose inflated rock hard and shot off a colossal blast of his juice into my mouth. “Ah! Ah! Ah!” I instinctively swallowed his nectar while I continued to work my oral muscles around on his soft sausage casing, rubbing it hard against the meat underneath. He was holding my head tightly onto him on the ‘sweet spot’ but he was quickly bucking his hips high into the air now so it was difficult to maintain suction on him.

“Nnngggh!” Gene grunted as another even bigger load erupted out of him into my mouth and spurted out around the broken seal I had on his convulsing apparatus, coating his pubes and shaft with thick white foam. His third blast was twice as big; I could feel it coursing through the inside of his hose in a fat lump in past my lips, blasting out to explode in my maw from his urethra. It felt like a gallon had filled my mouth, too much cum shot out so quick it hit the back of my throat in a splash and spurted out both my nostrils. My baby brother squeezed out so much fluid it was smothering me, I had to release my gripping lips off him and a giant wave of splooge splashed onto his crotch from both my facial orifices.

I was choking and gagging around the girth of his twitching dick, my eyes filled with tears and my nose pouring out snot and cum when the next squirt of sperm basted my tonsils so large I barely managed to choke it all down. Another wad big, warm, and viscous rolled down my throat into my stomach, followed by another smaller dollop and with his final spasm a stream trickled long and thin from his now softening firehose. Gene relaxed his hold on my head and sank his butt down in the cushion, looking me in the eyes drunkenly. “OH FUCK that was good!” King had been still and quiet as the adolescent used me but now he yowled and whimpered in response to Genes exclamation and shifted his hold on me again, trying to jump then climb up my back to be near us but he was still attached by his doggy-root to my boy-pussy. The angle he was stuck inside me caused the tension on his organ to yank him back and only Genes continued grasp on his leash kept him from trying to jump down off me.

Gene slid off the mattress to the side of me and got up while holding on to Kings collar, a river of goo pouring from his crotch down over his dangling third leg and thighs, dripping onto and over me, dropping boy milt on my shoulders and neck. “Good Boy!” he petted King roughly, the vibrations and movement transmitted through the tissue plugging my asshole and deliciously massaging my half- numb, half-tingling prostate, making my half-erect boner swing and flap around. “You’re a good Boy, fuckin’ my big brother so good!” Damn if he wasn’t turning me on again! “I don’t think he’s small enough to pull out of me, I think he’d kill me if he pulled out now!” I Gasped. The enormous Dog Cock was smaller than before but I could really feel it entombed inside, still throbbing slowly, menacingly, in my puppy-oven from my butt-hole to my navel. “Wow, your tummy looks like you’re pregnant!” It certainly FELT like I had had an enema like my Mom gave me when I was a kid, but it never felt like there was a giant animal swimming in hot sperm soup dwelling in my bowels!

I was starting to tire of holding the muscular Doberman up on my back. “Maybe we could get him to ‘turn’ so he won’t be so damned heavy, Gene… you’ll have to do it, but make sure he doesn’t pull out. That fuckin’ cock would split my ass in two!” “Ok, hang on” “Do it slow, too, we don’t want him getting any ideas about leaving…” He chuckled ”Ok”, kneeled down and started to pull the dog off me to the right side. Gene pulled him parallel to me and the dog lifted his leg around and over my butt, but then the eager Mutt tried to walk away from me while still he was still buried deep in my pelvis. My buttholes vice-like clamp on his knot held fast and he dragged me by my knees sideways about a foot; I felt my ass-ring bulge and prolapse with the torque as the Pooch easily pulled me along. Thank God the mighty dog stopped and stepped backwards enough to relieve the pressure and the delicious wrenching stinging agony that his knot trying to withdraw from me created. “Oh my GOD, stop! Stop him!” I shrieked knowing if that softball sized knot popped out of me I would be destroyed! “Hold him there…oh, God. Oh God…..he’ll take my asshole with him if he pulls out…”. I almost was crying in pleasure, pain and fear…

“Shit, sorry about that” Gene replied sheepishly yet trying to suppress a laugh “Are you Ok?”. “Oh yes. I FELT that!” the helplessness was now exciting, and the pressures were fantastically erotic even if they had hurt me. “I’m doing great now… I can feel his big dick starting to turn in me….” With the motion of being pulled on the huge dong had rotated slightly in my encasing tissues, as Gene moved the dog in a semicircle behind me the entire unit began to skid clockwise around in my tingling tube of mucus and membrane. Whenever it broke free from my rectums clinging interior lining the friction was intense, I could feel the veins and lumps on his tough bloated bulb screwing around in my sucking cock-tunnel. My boy-pussy made loud wet farting sounds as the sperm-churn buried in my ass-cunt stirred his Cream of Canine. He was continuing to fill me, still spurting small jets deep in my boy-uterus, overloading my insides the skunky jizz sloshed out around the seal my sphincter had on his plunger and slopped down his rod and my perineum.

I was surprised how hot the scum flowing down over my nuts and pecker was, arousing me so much my hand reached to stroke animal lube all over myself, jerking my soft noodle to raging hardness again with the foam and slime pouring out of me. His dong would grasp some fold in my lining, get hung up on the membranes and pause, break free and then skid another few degrees around until it bound up again. Every time it did a spark and an echoing orgasmic tingle would ripple through my prostate, making my surging testicles tighten and produce even more human sperm and juice to push through my quivering tube. Every twist and jolt stimulated and coaxed bigger gushes of hot doggy sperm from the Studs breeding baster; constantly he poured litter after litter cream inside me.

I was asshole to tail stump now with the panting purebred, tied fast inescapably by his canine cudgel rotated halfway around and upside down inside me, the smooth length of his cock seemed much more pronounced. I realized from having sucked him off (as well as watching him pull out after fucking the three Bitches in his “stable” in this position) that his knot was bigger on the bottom two-thirds and along the “top” it was a straight line from his sheath to the pointy knob just above his piss-hole. Now he was turned “upside-down” that smooth top was pressing along the front of my colon against my prostate it’s full distance, the blood-heat contact cooking my bowels now in its entirety. The warmth felt electric down through my pecker-head and my dick got super erect and started to heavily buzz and tingle. Warm leftover jizz continued to drip-drop out of my dangling erection while the skuzz oozing out from the reservoir of doggy-splooge slimed down out of my ass around Kings still fat butt-plug. “Hold him still” I whispered to Gene who was kneeling in front of the panting mutt. I could hear lapping noises as he replied “mm-hmm…” and I realized he was letting the willing dog lick and clean his boy dick from the sperm I didn’t manage to swallow. Even hornier I rotated my ass in small circles so I could feel King spin, slosh, and swirl my insides even more.

I must have been doing the right thing because King stopped licking Genes adolescent penis and I could hear him panting faster. “He’s got his eyes closed, he loves this! Don’t you Boy?” He cooed as I could feel him roughing up the dogs shoulders and back, making the peg I had stuck in me pull and slide back and forth; between my hips rolling in circles and Gene moving the dog to and fro the rock hard boner inside me started to throb and grow anew. My kid brother picked up on it and took the pooch by the collar and started moving him forward and back forcefully, making his unit skid deliciously along my tissues, flushing then withdrawing the flood of juices around Kings plunger, stimulating both of us simultaneously. His knot swelled quickly this time, to the point where it grew to softball size again in just a few pulses and wedged itself in me, unable to slide any more. “Oooh, he’s big in you!”, my Brothers hand slid down my tailbone and two fingers parted on either side of the thickening stump holding us together and started rubbing my love-muscle hard and fast against the hot beating orb. The massage was really moving everything inside me; Kings rigid cock was being stimulated by the sexy pressure of being rubbed against all of my internal boy-pussy tissues, and every inch of my internal boy-pussy tissues were being stimulated by my brother’s hand rubbing my love-muscle against Kings rigid cock!

Both of us locked together even tighter as the canine cock and knot spasmed huge, shooting thick streams of semen into me. It felt like he was all the way in up to my navel, turned like this I could feel the entire length of his bludgeon resting in my guts blasting buckets of beast-jizz into me. The giant knob Gene was rubbing inside me strained against my hole and started to press my ass-lips out and open, cum squirting out around it like a half-opened garden hose, spraying my siblings working hand with skunky liquids and lubing my exit even further. King was whimpering, as if were being tortured to produce more cum to push in my womb, we were trapped together, being forced to mate beyond our will like two fuck-slaves.

“Yelp!” Kings bark echoed in the tin shed and in my ears. “Yike, Ike, Ike!” he yowled again in pain and pleasure as his knot gave a gigantic heave and grew again, so big tears came to my eyes. “The knot is pushing up out of you!” Gene yelled “It’s pushing your ass apart!” I felt my ring dilate even more “I can feel it pushing up and out of you!” So could I, scared to death because I was clamping my sphincter as hard as I could and it still wasn’t engulfing the globe, instead my asshole and surrounding flesh was distorted into a dome shape, protruding up and out from between my ass cheeks. “Keep him in me!” I screamed, knowing that maybe Gene was the only one of the three of us who had any control over what was happening. “Owoo!” the orgasming Stud Dog howled as his mating bulb pulsed faster, driving his flood of spunk higher inside my guts, my belly growing firm and bloated by the immense volume he’d poured into my teenage womb for the last hour. Throb, throb, throb the entire cock and bulb jerked and spasmed canine sperm flushing into me, on and on and on…

It seemed like forever until the Dogs Pecker slowed its tattoo far inside me and with relief I felt it start to diminish in size and stiffness. I could feel Kings rapid heartbeat more pronounced in his organ now that it wasn’t spasming in ejaculation, and it too began to slow. Jets of jizz still were spurting inside me but it no longer felt like a fire hydrant was opening up with every shot he fed me, and once again my anal entrance slid down around his massive plug and totally engulfed his cock-stem. “I don’t think we can take much more of this” I moaned to my younger sibling. “I don’t think King can take much more of this either!” he replied “We’re going to have to get you two pried apart somehow”. ”Yeah, and before he gets to pumping me again!’ I knew this wasn’t going to be pretty…..