Jeff's body just got finished pissing, when he noticed another, different farm animal smell. He instinctually knew it was another donkey. Another male one. He heard it snuffling behind him.
"Chronivac program complete. Video upliading for international audience. Enjoy the show!
"Huh?" Jeff the current donkey heard the words in his mind. He was suddenly given the knowledge that millions of people around the world would now have access to a video on the "dark web." That they watched him switch places with a real natural-born donkey. And then....
....and then, Jeff felt his humungous viewable black donkey dick begin to grow hard as he felt his tail rise, revealing his new large round black donkey asshole for the entire world to see.
"Heeee hhhaaww...heee hhhaawww..."
Jeff wanted to crawl under a rock and die. But his humiliation was only beginning. He saw a large black shadow to his right, then almost immediately felt a big heavy weight come down on top of him!
The other donkey had mounted him! He felt his front legs squeeze his big fat sides, holding him in place.
"Heeee hhhaaww!" Jeff could only bray! He wanted to be back in his room. He wanted his hands back. His hands! Oh god, how "cramped" they were beginning to "feel" being stuck as large blocky hooves!
He then felt the other donkey's male appendage begin to probe around.
"Oh no, please!" he thought. Untintelligably braying. The appendage found its home as Jeff felt it suddenly penetrate his hole. It was very quickly and very roughly shoved deep inside a hole never meant for a dick the size of a donkey! Except for Jeff's hole, as it was loosely torn open from years of such use like an old hooker's vagina.
Jeff screamed. A high-pitched "HAAAAAAAAAWWWWWW!!!" As his eyes bugged out from the pain. It was a pain his body was all-too familiar with, but Jeff's mind wasn't. Nor was he mentally prepared. This was his very first spearing in a body that has done this many times in the past, and will force Jeff to go through with it many times in the future. For this was now permantly Jeff's new life.