Sarah was twenty-five, bored out of her mind in her aunt’s empty farmhouse for the weekend. The place was isolated, no neighbors for miles, just fields and the big German shepherd named Rex that her aunt had left behind. She’d been told to feed him and let him out, nothing more. By the second night the rain started, heavy and relentless, trapping her inside with the dog’s constant pacing.
She stripped down after a long shower, walking naked through the living room because why bother with clothes when no one was around. Rex watched her from the corner, eyes locked on her bare ass and the sway of her tits. Sarah caught him staring and laughed it off, calling him a pervert under her breath. She bent to pick up her towel and that was when Rex moved.
He was on her before she could straighten up. Big paws slammed into her back, knocking her forward onto the couch. Sarah yelped, trying to twist away, but the dog was heavy, all muscle and hot breath. His claws raked her thighs as he mounted, hips already pumping. She felt the tip of his cock, slick and insistent, jabbing between her legs.
“Fuck, no—get off!” she shouted, pushing at him. Rex growled low and kept thrusting. The head of his cock found her pussy and drove in hard on the next shove. Sarah gasped at the sudden stretch, the thick shaft sliding deep. He was bigger than any guy she’d had, and he didn’t pause. Rex started fucking her in fast, brutal strokes, his knot already swelling at the base.
She clawed at the cushions, trying to crawl forward, but the dog’s weight pinned her. Every thrust shoved her face into the fabric. Wet sounds filled the room—her cunt getting slicker despite herself, the dog’s cock pounding in and out.
Sarah’s protests turned into broken moans when the knot pushed against her entrance, stretching her wider with each slam.
Rex’s claws dug into her hips as he locked in. The knot popped past her lips and swelled inside, tying them together. Sarah felt it throb, stretching her cunt to the limit while the dog’s hot cum started pumping. It flooded her in heavy spurts, leaking out around the seal. She came without meaning to, legs shaking, cunt clenching around the thick knot as the orgasm ripped through her.
They stayed locked like that for long minutes. Every time she tried to pull away the knot tugged inside her, sending fresh sparks up her spine. Rex panted over her back, drooling on her shoulder. When he finally pulled free, cum gushed down her thighs in a messy rush. Sarah stayed bent over the couch, breathing hard, pussy gaping and dripping.
She told herself it was a one-time thing, an accident. But the next morning Rex followed her into the kitchen, nose shoved between her legs the second she bent for the coffee. Sarah tried to push his head away, but his tongue was already lapping at her clit, broad and rough. She ended up gripping the counter while he licked her to another shaking orgasm, legs spread wide.
By afternoon she stopped fighting it. She got on all fours on the rug, ass raised, and let Rex mount her again. This time she reached back and spread her pussy for him, guiding his cock inside. He fucked her harder than before, knot swelling fast, filling her until she screamed into the floor. The cum felt endless, hot and thick, pumping her full while she rubbed her clit and came twice around him.
The weekend stretched into three days of the same. Sarah stopped wearing clothes at all. She let Rex take her on the kitchen table, in the shower, bent over the porch railing with the rain still falling. Each time the knot locked them together she ground back on it, chasing the stretch and the flood of cum. By Sunday night she was sore, marked with claw scratches, and already planning how to visit the farmhouse again soon.
Rex lay at her feet, tongue out, watching her like he knew she belonged to him now. Sarah reached down and stroked his sheath, feeling him harden again. She smiled, dirty and satisfied, already wet for the next round.
