Mark was handed a multi-page contract by a pretty blond staff member of the Animalia corporation. He was already sporting a chub in his pants so he just skimmed the legal document and his eyes lingered on a handful of keywords and phrases which excited him: "...complete transformation into equine", "...permanent and irreversible…", and “male to female”; though he failed to realize the significance that the contract used the word equine instead of horse.
His human cock was now bulging in his pants as he read it, and a the blonde chick gaped at the massive bulge Mark was sporting. "Damn, you have a massive cock. Are you absolutely sure you want to sign this?”
Mark stammered out a mumbled response “I j-just want to be a mare.”
The staff member shrugged before smirking “dumbass.”
Mark blushed while the one of the film crew focused the camera on his confused and lust filled expression as he held the pin next to the contract. Mark finally lowered the pen and placed a wobble signature. The staff member slipped the contract back over to her. She picked up her notary stamp and placed an official seal next to Mark’s name.
Before the ink was even dry, a bearded cameraman wearing a cowboy hat put his arm around Mark and ushered him outside the building and over to a Barn. Mark got nervous when he entered the barn and saw a large haybale, leather harnesses, and about 5 cameras.
"First things first, all y'all pervs need a tail to start the festivities." The cameraman pulled out a tablet and after pushing a button Mark felt an immediate warmth in his pants emanating just above his tail bone. Mark had a wide grin which was matched by the burly man who pulled out a knife and cut open a hole to yank out a tassled brown donkey tail. The man pushed Mark onto the haybale and started strapping him down.
"Awesome. w-wait, this is a donkey tail not a horse tail! Change it to a horse tail.” Mark said confidently, and the burly man chortled "Hah! No.” Mark then saw some of the film crew leading over a large, scruffy donkey.
“Meet your co-star, Sylvestor. This smartass actually negotiated his contract, so he’s gonna be calling the shots today. Sylvestor got to keep his vocal chords too, so I’ll let him introduce himself."
Mark winced as he saw a fat, brown donkey clip clopping around him. The clearly male jackass walked straight up to Mark and gave a wide donkey grin “Didn’t expect you to be a dude. You know I’m gonna make you a jenny, right?” Selvestor nipped at your ears again and the camera crew got the hint and fiddled with the tablet some more.
Your smile returned as your ears bloated and expanded out into large, blocky donkey ears. “Y-yes, I wanted to be a pretty mare though.” Mark looked at Sylverstor's belly and saw the donkey's black unwashed cock swinging back and forth beneath the stained fur of the donkeys creamy underbelly. Sylvestor was clearly enjoying himself.
The donkey leans his blunt snout close to Mark's new ears and whispers into them "damn I'm gonna enjoying fucking the huMANity out of you boy."
Mark let out a whimper as the fat, smelly jackass teased him. Mark had envisioned being broken in by a sleek and noble stallion, not some stinky beast of burden. His human cock throbbed even larger as he felt his first tinge of regret.
Sylvestor sauntered behind Mark where he roughly sniffed and licked at Marks erect penis before chuckling "damn this sucker is tiny compared to mine. This disgusting prick has got to go, wouldn't you agree Mark?"