Kelly decided to finish what she started. She felt perpetually horny now anyway, so she was sure she could take another pounding from the bull when she was done here.
Her fist picked up the pace, and she found her other hand had stopped groping her tits and was grabbing handfuls of grass and shoving it into her mouth. With each load she swallowed, the weight seemed to be moving into the bottom of her stomach, not far above where she was frantically pleasuring herself. A new mound was pushing itself outwards, getting in the way of the hand she was using. No matter how hard she tried, she couldn't quite reach herself anymore, and quickly looked around in a sex fuelled panic for a way to relieve herself.
She scrambled towards a fencepost at the edge of the pen, backed herself into it, bent over and started grinding herself against it. Her face dived into the grass again and she resumed eating.
"Fffffuckkk...mooooooo" she moaned, muffled through the grass.
Her new mound kept growing, with 4 little teats starting to poke out. Kelly didn't even realise what was happening anymore, too engrossed in how she felt.
"Moooo...mooooo...moooooo...MOOOOOO" Kelly screamed as she came, and a perfect little udder finished growing.
Kelly tried to think about her situation, but it was difficult. 'When did thinking become so hard? Why think, when can just... Moo? Dress go now, am cow, don't need. Kelly pulled her stretched out dress off herself. She felt free and happy, and passed out under the stars.
She awoke a few hours later, it must have been just after midnight. Two things had caused her to wake. One, the bull was awake and nudging at her with his face. Two, Kelly could hear shouting nearby. The voices and the words sounded familiar, but she couldn't quite place them. Her mind was steering her to another session with the bull, but maybe she needed to see those people.