"Alright, apprentices, you may be seated. The magical energy in this space is now strong enough. Now enjoy the show and feel yourselves recharge," the leader-like figure announced, "I think it's safe to say our subject can fuel the change himself from here on." The chanting declined in volume and stopped, the cloaked chanters slowed their pace to a halt, then sat down in their circle to collect their breath.
"What, what the hell are you talking about!" asked Joe, piecing together that the ritual was ending--because he would turn into a bull anyway?!
"Well, you were acting just like an angry bull, so we're making progress. Not to mention you've clearly let go of your modesty."
Everyone looked down at Joe's exposed lower body, including Joe, remembering how he'd left his pants behind to charge at his captors like an animal. He blushed and crossed his hands down there to try to get back some privacy, but it wasn't very effective. His long tail swished in agitation, exposing what little of his bare ass it had been covering for the watchers behind him. Joe blushed even deeper. But he didn't go back to retrieve his pants just yet. He told himself it he wasn't sure how he'd get them back on over his tail. He refused tell himself that something about the fresh country air on his exposed hide somehow felt RIGHT.
What DIDN'T feel right was the sudden surge of aching down into his balls. "Aaaah!" They felt like they were going to explode, and then they felt distented, and at last they started to feel ... heavier, than usual. His head whipped down and saw his scrotum starting to sink lower, the bulbs inside starting to bulge outward. The pain was giving way to pleasure, and Joe began to realize he was feeling... aroused! His dick surged taut and rose to attention, and well, Joe couldn't help but hold his crossed hands tighter against it, touching it. To cover himself better, of course. That was it. One of the "apprentices" was talking notes.
"See, everyone? Like many unworthy humans, this one was really an animal all along. No real self-control whatever."
Joe was about to say something, but before he could think of what it was, a newfound feeling of plumpness began to press upon his abdominal cavity. His guts began to gurgle, he stomach began to rumble, and his belly shifted forward. His rips cracked and pushed out a bit. His stretched a bit taller, making it even harder to keep his hands over his crotch. He nearly hurled when he felt a lightning pain like his stomach splitting, and he outright gagged when he felt it again. He felt fat and huge. and he could see his bigger belly getting closer to his upright cock.
Joe's steel-hard erection began to lengthen, while his sagging scrotum continued to deepen. But then the scariest part (for Joe) happened: his bulging belly reached out and SWALLOWED his lengthening cock! Sure, he could still see something of a tube-shaped bulge creeping up the middle of his belly, but his dick was, his dick was INSIDE him?! He finally felt it stop growing--stop slithering up the middle warm pouch it was tunneling for itself--and seeming end write where a hole was forming. The opening was soon covered with with hair like the end of his tail. His hands dropped to his sides. There was no hiding this anymore. His balls were huge and hung down further than a typical pair of shorts. His dick wasn't even really on display anymore, but the sheath it was hiding was easily reaching almost to his chest. He didn't know whether to be flattered by the size or disgusted by the bestial arrangement.