It was amazing.
I was in Amish country in Ohio and noticed the pit by the raised hills that keep it contained. I was curious, walked up to the electric fence, climbed over the collapsed part and climbed the embankment. I had that nervous excited feeling we all know and love when we think we see the perfect opportunity to give into this part of ourselves that wants to be enveloped into soft warm anything. I saw the pit and nearly threw up.
I saw a football field sized deep black pool of manure. I got so aroused. I started breathing deeply at the excitement of my find so I checked for people that might see, took my shirt off and my pants and undies as if I could contain myself. I was possessed by the pit. I smelled the reeking odor and it wanted my body.
I knew my foot would sink in slow because it all looked thick and I thought it'll take some work to get in deep. So I took a step in the thick solid shit. Immediately I disappeared. My whole linebacker naked body was engulfed in the swampy thick black goop. All that was left of me was the plop noise the shit made when it closed around me. I was in ecstasy and came ropes of thick jizz immediately. I moaned out loud " hnnnngh!" as I became one with the shit. Let all my air out and sucked some into my mouth as I sank deeper feeling it rub all over me. I was coated everywhere. I was under 6 feet of fucking shit! Absorbed by it. I never thought me, a jock that never thought I'd love this stuff molesting every inch of my smooth college body, would cum and moan I totally covered in cow shit. It needed a straight boy to enslave and it absorbed me.
I got out and realized fuck, I have nowhere to wash off and I had an hour drive home. The pit had total control over me so I never thought how I'd get clean. So I got out. I sneakily walked to my car naked and clutching my clothes. I felt as though I was wearing them thanks to the thick layer if shit that still clung to my whole body. I couldn't shake this feeling that the pit was male...like I'd been violated somehow cuz this isn't me.
( this is the fantasy part...the rest didn't happen but damn was the real part above glorious)

I got back to my car and looked at my reflection. I saw I was so how talker now. I looked at my body and the shit had clung to me and formed into huge pecs and shoulders and was still moving! My back was rippled with these manure muscles too. " what the fuck is happening to me?!" The lump of shit on my back wasn't falling off, it crawled up to the back of my head and I heard my ears being engulfed by it.

Silence.
Then my forehead felt it's gooey warmth and I clenched my mouth shut. The smell was horrible and I was steaming From every surface. Then my mouth was the only thing left. Everything went black! I screaming and the black cowshit rushed into me deep down. I was absorbed by it, covered inside and out.
Then something said in a deep 20 something year olds voice " you're mine now linebacker." All you could hear were bubbles and muffled screams from the huge bull chest of whatever was raping my body. I opened my eyes and to my surprise I could see again but it wasn't with my eyes. The body that wrapped around me said that I was part if him now. All he needed was my unwillingly taken cum. He knew I had cum in the pit in ecstasy but now he needed to bond forever with me. The shit moved and all the rocks and hay fell out of us so all that was on me was a perfectly smooth defensive lineman body with bubble pecs and a jock gut. He began to stroke my cock. I looked down and he had a huge dick that wasn't mine in his hand but I could feel every stroke.
I resisted for a good five minutes but it felt so good. Plus the context of the situation. Fuck how could I resist! I released, let everything out in a loud " FUCK YEAH!!!" And gallons upon gallons of white thick cum spewed from this cock. It coated the shit body and began to dry in the sun. To my horror, it began to look like skin. The whole body was coated and began drying. Soon enough I was drug over and looked in the mirror.

WHAT THE ACTUAL FUCK!

I saw a 7'4" huge muscle bull of a boy that look like he could eat Brock Lesnar and then some. I had become that and worse I was stil inundated with cow shit on the inside. It was still pure and silky.

The new skin asked me "how do you like our new body." And it's at that point I started to feel myself become his muscles. I wasn't the boy who first lept into the shit. He's gone now. I'd become JT, the up and coming rugby star.