I refuse to write actual bestiality, so this was what I came up with.
Bobbi Rae McCurdy: An 18 year old farmhand and heir to McCurdy acres. Sweet, sensitive, and a little naive, Bobbi Rae wears her heart on her sleeve and has a hard time saying no to people because of her kind nature. Thick and curvy, Bobbi likes wearing clothes that hide her H-cup breasts and wide hips like overalls and baggy jeans. She is 5'4 with hazel green eyes, freckles, and short light brown hair.
Caleb McCurdy: A 36 year old gyafu farmboy who puts his farm and daughter first. Significantly more wild and carefree compared to Bobbi, Caleb takes a lackadaisical approach to life, seen most prominently in his skimpy attire and unconventional ways to getting his work done. Robust and muscular with a body count he's hardly ashamed of, Caleb loves wearing clothes that show off his big ass and milky E-cup breasts. He is 6'11 with hazel green eyes, tanned skin, and long wavy blonde hair he keeps in a low ponytail.
Scout and Deputy: 28 year old Shire horse twin brothers who have been living at McCurdy farms for the last five years. Lazy, shiftless, and stubborn, the brothers don't like doing any hard work unless certain incentives are involved, like sex from Bobbi Rae's whore father. They are both over 10 feet tall with impossibly large 30-inch cocks. Scout is a brunette while Deputy is a blonde.
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Today was the day Bobbi Rae would help her daddy Caleb tend to the horse stables, and Bobbi was nervous. Out of all the hybrids on the farm, the stallions were the most difficult to maintain and were notorious for giving Caleb a hard time whenever he wanted them to do anything. Caleb often had to resort to unconventional methods to get Scout and Deputy to do what he wanted them to do, and now that Bobbi was old enough, Caleb could finally get the help he so desperately needed. Her daddy says it's easier than it sounds and actually gets fun whenever he has to stay extra late to "clean" them, but Bobbi had her doubts. The fact that Caleb was teaching a lightweight like Bobbi how to tame giant satyrs with the strength of bulls and the attitudes of asses by her lonesome sounded like an impossible feat, but at least it meant she'd get paid more.
After all the other hybrids were locked up in their pens, Bobbi followed after her father to the horse stables. In Bobbi's hands was a basket full of fruits and vegetables for Scout and Deputy to snack on while Caleb lugged two big bales of hay over his massive shoulders. This would be their dinner, an assortment of natural homegrown veggies they can munch on after Bobbi and Caleb were done cleaning them and giving them enrichment. Caleb never truly disclosed what enrichment activities were to Bobbi before, but she supposed she was about to find out; if things get too rough, she'll naturally defer to her daddy for direction.
Once Bobbi and Caleb arrived at the stables, Bobbi set her basket down on the hay covered ground while Caleb unhooked the latch to a box stall that contained the stallions. It took a moment for them to emerge from their stall, but with time, Scout and Deputy sauntered out of their pen, yawning and stretching muscular arms as their bare feet padded along the floor. Physically imposing both in mind and body, Bobbi found herself ogling the stallions' herculean builds, eyes locking onto their naked sun-kissed chests and chiseled bellies. Their long tails swish lazily in the air as they approach her father, dwarfing Caleb in both height and weight as they stood over him with bored, lackadaisical looks in their golden eyes.
Caleb however didn't seem at all intimidated by the stallions, his voice deep and strong when he told both hybrids what his plans were.
"Alright, listen up and listen good y'all two," He gestures at Bobbi and continues. "That's my baby girl right there, and she's finally gonna help me keep you two asses in line."
"Hello!" Bobbi waves, kind and polite. The stallions' ears twitch at the pep in her voice.
"Ah," Scout turns to Bobbi, and cracks his neck. "That's your filly, huh...?"
Deputy rests his hands on his hips. "She's kinda tiny, ain't she?"
"She tiny, but she got spirit," Caleb reassures. "I'd say go easy on her, but that won't do her no good. She needs all the experience she can get."
"So..." Deputy glances at Bobbi. "You want us to break her."
"Like how we break you?" Scout remarks.
"Gonna have to dig my grave and grind my bones if you wanna chance at breakin' me," Caleb grimaced. "But yes, she gotta prep for the worst."
Bobbi frowns, unsure of herself. She knew Caleb wasn't gonna sugarcoat this, but the way they talked made her skin crawl. She loved farm work and she loved making her daddy happy, but if these stallions are gonna give her too hard of a time, she doesn't know if she can actually do this.
"Alright then," Deputy smirks and walks closer to Caleb while Scout does the same. "Does she want a "hands-on" demonstration?"
"Or do you wanna show her how it's done?"
"It'd be better to show her," Caleb suddenly fussed with the buttons of his shirt. "As much as I want her to help, I don't wanna scare the poor thing off.'
"Ohh, this is a little different," Deputy helps, or rather forces, Caleb out of his top by ripping it apart with his hands, exposing big breasts and plump nipples that harden into stiff peaks. "I didn't know a slut like you knew how to share."
"You sure she can take all this hot throbbing horse meat all by herself?" Scout takes a handful of Caleb's ass, framed enticingly by cheek-baring shorts that leave little to the imagination. "She's so fuckin' little, I doubt we'll fit."
"N-Nah, this right here..." Caleb groans, his teeth clenching when Deputy bends over to take a tit into his mouth. "She can take it no problem, just like her old man..."
Bobbi blinks, anxiety building in her chest when she sees what the stallions have made of her father. They feel all over Caleb like it's the most normal thing in the world and Bobbi isn't sure what to do or even say. Should she break this up to spare her father what remains of his dignity, or should she run off, go to bed, and pretend this didn't happen?
Confused and completely overwhelmed, she calls out to Caleb in a plaintive whisper.
"D-Daddy...?"
"Oh, cutie pie, this ain't no thang...!" Caleb's lips part into a soft "o" when Scout tears off the seat of his scanty shorts. "It looks scary at first, but trust me!" Deputy chews Caleb's teat between his teeth before flicking it with his tongue. "Milk their nuts a few times, and they'll obey your every word!"
"Yeah, whatever he said," Scout wastes no time slipping a finger into Caleb's ass, taut mounds of fat and muscle jiggling around the stallion's wrist when Scout pumps his hand. "Sorry to tell you this sweetie, but your dad's a whore."
"Mhm..." Deputy spits out Caleb's tit, now wet and littered with teeth marks. "He didn't have to, but in return for doin' whatever the hell he wanted us to do, he just started suckin' our cocks no problem."
"Didn't prod or pry him or nothin'," Scout forces two more fingers inside, scissors them apart to get Caleb's hole to open up, but to Bobbi's shock, her daddy's hole was already plenty loose. Gaped and ruined for good by previous encounters, Caleb's hole was big and sloppy, dark and puffy like a flesh-lined cavern. Caleb moans and sticks his hips out for Scout, earning him a firm smack on the ass. "Stretched him out real good, too."
"And now he wants to watch his filly stretch her pussy on some horse cock," Deputy takes two heaping handfuls of Caleb's breasts, tanned flesh squeezed tightly between thick fingers when the stallion kneads his handler's breasts. "Kinda fucked up, don't you think, pops?"
Caleb gasps and is almost breathless when Scout grabs Caleb's wrists and lifts him in the air, suspending him like a butchered pig. Bobbi then watches Scout poke her daddy with something long and heavy, an appendage she's been trying to avoid staring at since she got here. The flattened tip of Scout's hulking member circles Caleb's ass in lazy swirls of his hips, lubricating her daddy's dripping hole with pearlescent slick that dribbles over a mottled pink and brown shaft and a thickened sheath of flesh. Bobbi gulps, her freckled cheeks burning hot when Scout uses that massive thing to slide into Caleb's insides, penetrating him with so deeply that it makes Caleb's belly bulge. His muscles fade around the growing bump in his gut while the tits that are squeezed ruthlessly by Deputy's hands bruise beneath his fingers. Bobbi thinks Caleb is hurt, but his shuddering squeals and the growing wet spot in his shorts tell Bobbi otherwise. His green eyes roll into his head while his mouth stretches into a blissed-out smile, tongue hanging over his trembling lips as he lets the stallions use him like a toy. Bobbi wants to leave, but the sight of her big tough daddy, strong in mind, body, and spirit, reduced to nothing more than a musclebound fucksleeve, did something to her. For whatever reason, she stayed where she was, transfixed by her daddy's undulating stomach and crushed tits.