Horsecock Girl
I’m Sarah, a…well, a futanari. Ever since I was born I had a huge fucking horse-dick. Sheathed it is most manageable, but I still have softball sized nuts that keep dragging me down. I couldn’t walk until I was 2yo! But when I did, I was strong, lifting my huge toddler nuts and walking/running around my parents farm made me strong like an ox. Eventually I had to start going to school in my favorite outfit, ovralls! They were baggy and covered all of my developing body, my thick strong thighs, my Iron hard abs, my ballooning tits, and my fattening cock. Though even with trying to hide my blossoming body, my plump pouting lips and hyper volumous hair left all the boys (and girls) at school drooling. Finally I’d be able to get home after school to my real friends…our families horses. I had always loved the farm work, but once I hit puberty my body became like a horse. My parents remembered when I was born having balls bigger than any man, and they never took me to the beach because of that. But what they didn’t know is there was a lot more of me that was…horse like. I learned early on that my vagina was like that of a horses, much bigger and plumper than a normal girls. It felt good to touch and I could fit a lot of large items inside it, I do not know the limit of my fat stretchy cunt. My asshole was also plump and fat like a horses, or bigger. My donut is bigger than a basketball and I try to hide it with my baggy overalls. I tried not to poop at school because my diet of carrots, apples and hay (what you didn’t think I ate like a horse too?) made me shit huge horse sized logs and they would destroy the school toilets. Coming home after the school day I would run out to the barn to “do my farm chores” which consisted of cleaning the barn, shitting huge horse dung and pissing gallons into the compost pile, stacking hay inside the barn, running in the field with the horses and outpacing them. My life was odd, but perfect, and peaceful…until that day. 
My dad and mom decided to make our horses (Dave and Blake) into breeding horses. They didn’t do anything special, they just bought a horse dick milking machine and told me it was a new chore to fucking jack off the horses! They are like my brothers, my only friends in this world, and my parents wanted to make me touch them in that way?!?!?! It was a large metal cylinder with handles on the sides with a hose leading to a large container that would be taken away by a horse breeding company at the end of the week. The volume and quality of the semen would dictate our payment. I got home from school the first day of my new “chore” and got to work. I was in high school, but the homework wasn’t that hard and it could wait until later in the evening. I started by getting up under Blake (he was a little smaller and I thought he might be easier to masturbate and get in the milker. I fondled his balls until his flared head popped out and I started stroking him to a full 2’ erection. I was breathing heavy, I had smelt these horses before when we pissed and shit together, but this was different somehow. I slid the milker over Blakes dick and it started to vibrate on his horsecock. He whinnied and came, I watched the LED screen counter on the side increase up and up until he stopped cumming at 0.998L, nearly a full liter of horse cum from him! Then I started with Dave, our big stallion horse. He and I had a very special relationship. We would tussle and run together, I would pick him up over my head with my bulging strong arms and when my friends at school talked about how nice it was to kiss a boy…I tried it with Dave. Kissing a horse was disgusting, but I kind of liked it. Dave was definitely the stud here, getting to 2.5’ fully erect and it was harder to fit him in the milker. When he finally popped of and came, the ticker moved faster upward. I gasped, I had reset the counter to 0 and he filled the tank with an extra 2.100L a full 2 liters of horse jizz! He really was a stud.
I had just jerked off 2 stud horses for 3 liters of their semen and I felt hot. My parents never came to the barn, so I felt private enough to take off my clothes. My hair flowed down my toned back to my huge firm ass. My tits, now unconstrained by my shirt lifted and almost blocked my view with their perkiness. My abs were like 6 apples on a stick with my thin waist. I am toned and buff, and my body was on fire. My balls churned and gurgled while my prostate started to bulge my lower abdomen a bit. I reached down and put a hand on my fat basketball sized nuts. For the first time in my life, my horsecock lurched out of its sheath. After jacking off 2 horse studs I was in aww of what I saw between my legs. A 2.5’ horse cock fully erect with the widest flare of us. I had a bigger cockhead than these 2 horses I grew up with. I touched it and I needed more. I grabbed the milker and reset the counter, shoving it hard onto my massive member. The vibration function was more intense than I had realized, this must have been why neither Blake nor Dave could last very long. I came hard. Noticing the hose from the milker to the tank bulge, I held on tight. Once my orgasm subsided I looked down at the volume counter. 2.261L! I had cum more than Dave! I had cum more than a huge hung horse stud! Fuck! How am I going to tell my parents? I decided not to. I had a horses cock and probably horse semen inside my balls, no one would know. As long as I always jacked off the horses, they would never be the wiser as to any “extra” semen in the system. 
The week continued, I would go to school, come home and cum in the barn while jacking off my horse friends. When the week ended I had collected nearly 40 liters of horse jizz (including my own). After cumming so hard, I would become dehydrated and I started putting my urethra against my mouth and drinking my own horse piss. It was bitter, and bloated me a bit, but I got hydrated quickly. The man who came with a tanker truck to collect the semen from our farm was surprised we were able to get so much, but that made sense with such a “pretty daughter” if only he knew. Then, my real problem started.
The start of the second week hit me with a problem. I started cumming around 4 liters every orgasm. I was jizzing more than 2 horses every day! I felt strong, I felt powerful! And I had no idea how to hide this by the end of the week when my parents got the tank drained. Double these horses output could be brushed off, but with triple their expected output, that would warrant investigation. Luckily my parents bought more horses, and that meant more legitimate horse semen for me to hide my own load in. 5 horses making 9 liters of cum a day was the norm now (Though they only averaged 5 themselves). The next week it was 8 horses making 16 liters (of which I contributed 8 liters to), until finnaly at the end of the school year I was flabbergasted at the volumes. Our barn was full of 18 horses, and our farm was totaling 82 liters of semen every day. If you can do math you’ll know my output. My 4’ horse cock with a 10” diameter flare was pumping out 64 liters of cum a day (over 16 gallons of horse girl jizz)! They had determined that the quality of most of our farms semen was so high they were giving us $1,000 per liter. We were making millions every month off my jizz! Though my parents never knew it.