The doms disembarked, and their carts rattled off. They milled around among us, looking at our bodies with interest, but not touching anyone. Then Barbara herded us off into the middle of a large and very muddy area of the field. "Pair up!" she barked, and we obediently turned to the woman nearest us, no fussing and no attempt at selection.
Out of the corner of my eye, I saw the "volunteer" men - there seemed to be a great deal more of them, now - join the doms around the edges of the mud. I lowered my eyes, seeing only the long shins of the woman opposite me. Cold mud oozed up through my toes. There was a splash nearby, and I realized Barbara had tossed me something, and I'd missed. I bent to retrieve it, and the woman opposite was suddenly on top of me, knocking me fully and face-first into the slurry. I twisted violently to dislodge her, while simultaneously reaching what was tossed - a six-inch latex dildo, on a fist-length handle, dripping with oily lube. I realized I must've missed an instruction, and I simultaneously realized what I was meant to do.
From the muck, I launched myself at my partner, a middle-aged woman, lanky and fit and determined. She still grasped her dildo, and I dropped mine, which gave me an advantage. I rolled on top of her, belly to belly, mud squirting out from between us. With my knees, I pinned her thighs wide apart. She yelled and grabbed my tits with her one available hand, attempting to push me off her. I slapped her hard across the face, and, while she was stunned, pressed her arms above her head into the glop. I seized her own dildo. With one fluid motion, I sat back, whipped around, and thrust it up into her. It was probably unnecessary by the rules of the task - and completely unnecessary for subduing her, as she'd gone limp immediately on penetration, but I continued to saw it in and out of her until I became aware of her whimpering over my ragged breathing.
I let go of the dildo then, leaving it inside her, and rolled off heavily, squelching in the churned slop, gradually becoming aware of similar scenes being played out all around me, of the mud dripping out of my hair and down my face and breasts, and of the large numbers of men watching raptly from the grassy perimeter.
Barbara blew a whistle, and the remaining pairs disengaged. We sat silently, not wanting to look at the women we'd just bested or been fucked by. If we'd all been in this together up until now, now it was every woman for herself.
As instructed, we gathered in a group back on the grass, and men came through with hoses and gleefully blasted stinging cold water at us. As they focused mainly on directing the jets at our breasts and pussies, most of us were still left streaked with mud, as well as now reddened, dripping, and freezing. We were ushered back into the barn, where, in our absence, a large standing screen had been erected. There were eight large holes in the screen, perhaps fifteen inches across and a foot high. Crotches and erect cocks appeared through each hole. Seven other women and myself were called up to kneel in front of them and suck.