More Thunder Down Under

After I had jacked Thunder off the night before, I was feeling a little more exploratory. We came home from his daily walk early in the afternoon. I prepared the living room very carefully – I threw an old comforter down on the floor, and I got undressed. I have large tits, and normally it takes a lot to make my nipples hard, but nasty thoughts had been going through my head for a week, so they were sensitive and perky as hell, and I started pulling on them as I went about finding the rubbers I had brought along, and the KY (not that I really needed it, but you never know – I’m like a girlscout- I always come prepared).
I got right down on the floor with Thunder, brushing him and loving him up. He’s one of those dogs that just loves having his belly scratched, which gave me amazingly easy access to his cock and balls. He had his big head in my lap, all four feet in the air, tail waving as I rubbed his stomach and stroked his sheath again. This time, when his cock began to peak out, fluid was already flowing from it, like he was anticipating something about to happen. My pussy had been wet all day, so I knew how he felt. I was very ready, mentally and physically. I put his head on the floor and moved along side of him while I continued to stroke him, easing his cock from the sheath. I had brought along a rubber, just in case, and after seeing just how much cum he had inside his balls, I decided to try it out. I proceeded to try to unroll it over his cock. It really wasn’t designed for a long pointy prick, and I could tell pretty much right away that it was going to slip and slide some. Once I got Thunder hard enough, with the rubber already leaking doggy pre-cum all over my hand, I straddled Thunder very slowly. He jumped a little and tried to roll over on his side, but I just stayed very still over him, one hand pumping his cock, the other scratching his broad chest and throat, scratching his chin, gently keeping him on his back. I stopped stroking his cock and just laid over him, rubbing my pussy lips up and down the length of his shaft, feeling the heat of him through the rubber against my clit. He wasn’t stiff like a man, but I could feel the bone inside. His tail started wagging again, which was a good sign, and he stopped trying to roll away.
My own pussy juices were soaking the fur between my legs, so I figured, well, it was as good a time as any. I raised up, still petting his belly with one hand. I lifted my cunt above his cock, and pulled his prick up slightly with my other hand, enough to ease it into my pussy. I laid forward a little to accomodate the natural angle and began to slide forward and back on his cock. I couldn’t believe I was actually fucking my sister’s dog. It was incredible, the sensations. His cock was sooo hot inside me, even though the rubber kept sliding around and getting in the way. I could feel his knot swelling against my fingers, and he was trying really hard to hump me back, but he was in the wrong position.
I didn’t know if I wanted to be fully assaulted the first time, but the more he struggled, the more the rubber shifted around and the more his cock-bone poked me in weird places. I finally gave up and got off him, and he immediately went to his feet. I pulled the sagging rubber off him and sort of pushed my ass under his back legs – I really had no idea how to proceed, so I pulled his front legs over my shoulder, getting him off-balance – I’m not a small girl, width wise, but at least on my hands and legs, he was a little taller than me. I bent forward a little as he scrambled for a foothold, and all of a sudden we were joined like puzzle pieces – his front legs gripped me around the ribs, his thighs went around my hips and I was hit with thick, pointy, painfully powerful dog-cock right on the perineum. He slammed me a couple of more times, and then his juices and mine worked in my favor to let him hit the target. I almost screamed when he first went the full length into me, he hit my cervix reallly hard, and I instantly reached under myself to keep that knot from joining the rest of his dick – it was already huge. Juices were pouring from my pussy like a waterfall, and my clit and g-spot were throbbing simultaneously. I didn’t even have time to think, “Oh my gods, I’m being fucked silly by a dog!” before my first orgasm hit. I was gasping with the intensity, the waves just filling me, my pussy walls clamping down on Thunder’s cock, he was panting pretty hard too, so I had the added sensation of having my head drooled on, and he had a death-grip on my ribs. I never realized how strong a dog really is!
It was over way too fast, but it seemed to go on forever. In a way, after the third time I came, I was thinking, “Boy, I hope he cums soon, my twat is really getting tired!” It’s the first time I could really feel every muscle in my pelvic region – it got a good workout. Finally I could feel his cock give those tell-tale jerks and shudders, and his thrusts speeded up for a few seconds, his balls swinging up and slapping against my swollen pussy lips for a few stinging little swats, which was also a new sensation. He stayed on top of me for a few minutes, and his cum was just running down my legs and puddling under my knees, and some of it was running up between my pussy lips to drip off my belly, which was weird, and some was just pouring out of me. I pushed his front legs off of me and pulled out from under him and just laid down on the blanket. He sniffed at my ass and licked his cum from the backs of my thighs before he started licking himself – I didn’t know whether to feel complimented or insulted. I fell asleep and woke up later with Thunder’s head on the small of my back. I just scratched his ears & told him what a good doggy he is, and got up to shower. I douched. Twice. :)