As Kelly neared the fence surrounding the bull, she started to get a tingling, numb feeling in her legs. Halfway over the fence, and her phone started ringing.
It was Emily. It was getting late and she was probably asked by her parents to find out where she is. Kelly prepared her lie and answered it, still straddling the fence.
"Hey Emooly what's up?"
"Hey, where are you? Mum wants to know if you're home for dinner?"
The bull, smelling Kelly's arousal, started to approach her from behind.
"Don't worry, I'm just out with Moosan, I've already eaten plenty so I won't be back for dinner."
Kelly was unaware that the bull was stood behind her, sniffing at her.
"Did you just say Moosan? You mean Susan right?" Emily questioned.
"Yea that's what I s-" Kelly was cut off as the bull used it's head to nudge her off the fence.
She was thrown to the floor, and the phone was knocked out of her hands. Kelly scrambled around on her hands and knees looking for it, but the bull was upon her quickly.
'Where is it? Where the fuck did it land?! I need to hang u-' "MOOOOO" Kelly's thoughts and concerns were cut off as the bull pushed it's huge cock inside her. She could only hope that Emily had already hung up, and wasn't about to listen to this.
Emily eagerly gave in to the bull, even pushing her ass back into its thrusts. She was loving it, it was so much better than Marcus earlier. So much bigger, and rougher. Just hard, raw sex for breeding purposes. That's all she's ever wanted.
Kelly hit her first orgasm pretty fast with a loud "Mooooo!", which triggered the change in her legs. She was forced up from her knees as they reshaped themselves to resemble a cows hind legs. They felt so strong now, and the new angle for the bull offered far more pleasure than her human legs did.
Kelly came again within minutes, mooing more and more as the sex went on. As she was bent over forwards, tits swinging around wildly, she got to watch as her feet slowly changed into hooves. Kelly loved it. She only wished that she had been a cow all her life. This was all so much better than her regular life.
Suddenly the bill was pumping her full of his seed, and she came again with it. As much as her pussy tried to contain all of it, there was so much that it just started leaking down her legs. She watched her tits growing slightly again too, and could only assume her hips and ass were doing the same. After what felt like 5 minutes of the bull cumming inside her, it pulled out and wandered off. Without it's cock supporting her, Kelly toppled over, legs quivering too much to keep her upright. Letting out little satisfied moos, she came down from her orgasms and realised her phone was on the ground next to her.
She grabbed it and checked the call from Emily. She only hung up a couple of minutes ago. She definitely heard all of that.
But Kelly didn't care anymore. She stomped on the phone with one of her new hooves. 'Cows don't need phones anyway, why did I even have one to begin with?'
Kelly took this moment to feel out her new form.
The dress she was wearing was now skin tight, despite originally being a nice, flowy summer dress. She figured she may as well throw it out, but was was also enjoying how much her new thicc figure was filling it out. It stretched out nicely over her hips and ass, showing off the new plumpness she gained. She barely managed to cram her tits into it too, and even then there was still a large amount overflowing out the top.
This was the sexiest Kelly had ever felt. She laid back down on the ground as her hands started exploring her body again. Her left hand slowly squeezed at her tits, causing milk to ooze out of her nipples. Her right hand was touching pussy, feeling how much bigger it actually felt now. She effortlessly slid her whole hand in, slowly pumping it in and out until she decided she needed the bull again.
'There can't just be the one around here right?'