As you read the list bear seems kinda far fetched to be real so you decide to click it as a joke. Immediately after the machine asks "Changes are permanent and you will be expected to complete your role. Do you accept?". You hit yes and the machine declares the transformation has begun. You sit there for a minute feeling no different and laugh at how silly it would be if it did work.
Suddenly, everything goes black and you start to panic. Then your sight comes back and you find yourself in the woods with a massive grizzly in front of you. He was 5'11", had dark brown fur, hazel eyes and a ell rounded figure. You couldn't look away, but he could. As he turned you got a good view of his fat ass. It could've smothered you if it wanted but that wasn't why you were here. You felt a slight attraction to walk up to this bears butt and... kiss it. As you got closer the bear lifted its stubby tail and gave peek of its pink, shit encrusted anus. This made you want it more. Once you finally face to anus with the bear, the bear farted into your face. It smelt like death but you were still there and he was too. You then lean in and begin to lick the anus of the bear causing him to moan. The bitter shit clung to your mouth as you continued to rim him. Slowly you got deeper and deeper until you were French kissing his asshole. Then you couldn't move. The bear made a sound similar to laughter and you lips began to meld into his anus. You tryed to push away but your arms just began to go numb and sink into his buttocks. You couldn't run either for your legs were retracting into you as the bear kept laughing. Then he spoke "The anus I was promised finally arrived, can't wait to break you in." This made you panic. You finally realized that the machine wasn't joking and you were going to be a bears anus. Your teeth and finger nails all feel out one by one and your mouth felt like a long tunnel. Your organs melted into the bear and the rest of you was growing fur to match the bears. Your face was all that was left. Your lips involuntary change to a "o" shape. Your nose and eyes close and seal shut causing you to lose both your sense of smell and sight. The last small changes happen over your body but the transformation is complete. After a little bit you gain back all your senses and you see just below the tail and smell sweaty ass. The bear sighs then squats over. A low rumble can be heard just above you and you begin to panic more.
The bear speaks again "All that transforming really gets your system running, wouldn't you agree?" You slowly feel the building pressure in your mouth as a rank fart slips out. This fart was just the beginning of your hell. It smelt like a 3 week old rotting carcass and tasted like shit. A couple more farts slipped through your lips before finally the main course arrived. The bear grunted and squeezed and pushed until it separated your lips. A full fledged solid log of bear shit squeezed out of your lips leaving a slimy trail as it made it's slow descent to the forest floor. This log alone was 2 feet long and was a brownish green color. Finally you pinched it with your lips but that was just the first. The second log was a softer turd that you could push out much easier. It was half the size but smelt twice as bad and same goes for taste. Finally the last turd came out in a gush of liquid shit that was terrible. As you pushed it out it looked like sink on full blast as it peppered everything around a 3 foot cone. Once that was done the bear began a trek through the woods with you.