I never planned on it happening. One hot summer on my uncle's farm, with nothing but fields and that big old house for miles, I was bored out of my mind and horny as hell. At twenty-two I should have known better, but the heat made everything feel raw and urgent. The family dog, Rex, was this massive, muscular German Shepherd, always padding around with that thick tail and those dark, knowing eyes. I'd caught myself staring at him more than once when he licked himself clean, his red cock sliding out of the sheath, thick and veiny and dripping.
It started with teasing. I'd sit on the porch in cutoffs with no panties, legs spread just enough so the breeze hit my wet pussy. Rex would come over, nose bumping my thigh, sniffing deep. I'd let him, heart pounding, until his rough tongue swiped once across my slit. Fuck, it felt electric. I spread wider the next day, shorts pulled aside, and he went at it like he was starving. That tongue was long, hot, and relentless, lapping my clit and pushing inside me until I came hard, thighs shaking, juices running down my ass.
After that I couldn't stop. Every afternoon I'd sneak to the barn, strip naked on the hay bales, and call him over. "Come on, boy.
Lick it." Rex would bury his snout between my legs, tongue fucking me deep while I grabbed his fur and moaned like a slut. I'd cum two or three times before I even touched his cock. When I finally reached under him, his sheath was already bulging. I stroked him slow at first, feeling that hot, slick shaft push out into my hand. It was bigger than any guy's I'd fucked, the knot starting to swell at the base.
One day I got on all fours. "Mount me," I whispered, voice shaking. Rex knew what to do. He jumped up, paws on my back, hips pumping. His cock jabbed against my thighs until I reached back and guided him. The first thrust punched straight into my cunt, stretching me wide. He fucked like an animal, fast and brutal, hammering that thick dog dick in and out while I pushed back, taking every inch. The knot swelled fast, popping in and locking us together. It pressed right against my G-spot and I screamed, cumming so hard my vision went white. Rex kept grinding, shooting hot, thick ropes of cum deep inside me until it leaked out around his knot.
We stayed tied for twenty minutes, me panting and dripping, his cock twitching every time I clenched. When he finally pulled free, a flood of dog cum poured down my thighs. I scooped some up and licked my fingers clean, tasting the salty, musky load. It became our routine. Mornings I'd suck him, letting that pointed tip hit the back of my throat while I swallowed every spurt. Afternoons I'd ride him on my back, legs wrapped around his hips so he could pound me missionary-style, knot swelling inside me while I rubbed my clit and came over and over. Evenings I'd bend over the hay and let him take me from behind again, his claws digging into my sides, his balls slapping my ass with every thrust.
The dirtier it got, the hotter I felt. I'd finger my ass while he fucked my pussy, or let him lick my asshole until I was begging for his knot there too. One night I got on my knees and offered both holes. He mounted me and drove straight into my cunt first, then slipped out and found my ass. The stretch burned so good I nearly blacked out. I came with his knot locked in my ass, cum flooding my guts while I rubbed my clit raw.
By the end of the summer I was addicted. Rex owned my holes. I'd walk around the farm with his cum still leaking down my legs, pussy sore and satisfied. Every time I saw that red tip peek out of his sheath I dropped to all fours without hesitation. It was filthy, wrong, and the best sex of my life. I left the farm eventually, but the memory of that thick dog cock stretching me open, knot tying us together, and hot cum pumping into me never faded. Some nights I still get on my hands and knees and imagine him behind me, ready to mount again.
