Jeff the penis was nestling comfortably inside his sheath. It wasn't like he could hear or see anything anyway, so the only difference from being exposed to the air was the flesh prison surrounding him.
In fact, he questioned to himself whether this state of being stuck in the sheath was any different from being a vagina: stuck in one place, fully surrounded by flesh and hence immovable, serving the most intimate actions of its owner. Unable to push himself out of this confinement, he was powerless to do anything until his owner pushed him out of his sheath, and even then it wouldn't be anything pleasant…
He sensed his body being raised and slightly slanted, meaning that his owner was raising a leg to do his business. He knew what was coming for him and tried to prepare himself mentally for his task: since he had tasted urine before, this would be easier for him. He was pushed out of his sheath again, as he became erect and… touched something like a leaf or a blade of grass? Does this mean his owner is going number one outdoors? His owner is probably succumbing to animalistic instincts and having his human mind drained away soon, he pessimistically imagined.
Swaying lightly through the air with a rod inside him, a warm liquid flowed into his butthole and out of his mouth, where he received a taste of the urine and it was released into the ground below him. But the taste, here, was a totally different sort that he didn't expect. It tasted differently from human urine, being a completely new kind of acridity that was even more unbearable than human urine. Even after the urine stopped flowing into his butthole and through his interior, a few drops remained at the mouth that he could not get out completely. A female human might wipe his vagina after urination; a male human might shake his penis to let the final drops of urine out; but the owner, an animal, could do neither, as there were no hands to grab him and shake him with. He receded into his sheath, the aftertaste of urine lingering in this mouth.
Though, this was his purpose. Just as he looked forward to childbirth as a vagina, he now looked forward to ejaculation as a penis. It'll definitely be fun when the time comes, and it should come very, very soon, considering that his owner is probably nothing more than a mindless animal at this stage.
At some point, he felt himself crushed from the above by something above him. It's probably the torso of its owner, meaning the owner was lain with the entire torso on the floor. The surface he was crushed against was hard and slightly cold (though the sheath intercepted some of the coldness). That meant his owner was lying on the floor. Did his owners forbid him from sitting on the sofa? The few drops of urine clinging to the penis's mouth made him thankful for this decision, even of the sheath completely encasing him ensured that no urine could leak out of it.
The passage of time was inconceivable inside the flesh prison, sealed from the outside world and having no sight nor hearing. Something caressed his sheath slightly in the meantime, swaying it to the side, and later on several water jets gently struck his sheath, but other than that there was nothing else for him to feel. The sheath managed to insulate him from the outside world so completely. Perhaps the sheath had a mind of its own as well, sensing the presence of a penis inside it? That's a silly thought, and obviously couldn't be true by any means.
The torso crushed against him, this time, however, towards a soft surface, something like a cushion. His owner was surely going to sleep, and he soon fell into sleep as well, even with the weight of an entire torso crushed on his tiny body.