"Yes, Stephan. Both human-zebra's are ready," and with a simple nod...
With a simple nod, both Madam Illusia and Stephan released their magic, stepping off behind a protective magical electric-like barrier designed to keep them, and each animal, safe inside the confines of its buzzing borders.
Luke had only three seconds to pivot his large head when he heard the sound of clomping hooves approaching from behind, instantly barking in startled wonder as that older teenage jock he'd just witnessed turning into a zebra lifted up onto his hind quarters, violently sliding that massive dark red wolf penis across his back. Luke's legs barely held up the added weight that'd pressed down against him. As the heavy front legs and hooves found their hold upon his back, it dragged the slimy squirting penis pressed against his rump's upraised tail backwards, and then rammed its loins forwards and forcefully plunged that pointy red tip deep inside his leathery sheath-rimmed slick rectum.
And before Luke's mind could even process the new sensations, the beast behind him stabbed every inch of the red 18-inch long hardness deeply inside with a loud barking bray from its wildly animalistic lust. And as the beast began pulling the swelling shaft's pounding length back, it steadied its hind legs and drove its cock even deeper inside his rectum, immediately discharging its heated liquid flood inside his stretching rectal passageways.
Luke's lengthy black cock was already spilling pasty ropes of his zebra cum on the floor's wooden planks beneath his fully aroused erection, uncontrollably. But as that larger appealing zebra mounted him, his human memories reminding him just how attractive that older jock teenager had looked earlier, Luke willfully inhaled that bizarre new musky animal-like odor being given off the sexy light brown-haired jock's pelt of the dominant alpha zebra hunk he'd become.
As a second, and then a third stronger flow began squirting an even more powerful supply inside him, Luke's mind recovered its full human awareness. Luke loudly barked from the shock and pain with his forced new language, but the beast's reply to each equine sound he'd made was simply a violent plunging pressure and snort of it's own as bloated lupine knots slid several inches further inside Luke's painfully expanding anus.
Within seconds, Luke's black zebra penis reached its own full erection, spewing sickening thick white chunks of his own syrupy ejaculation across the wood floor. His cum sprayed outward so forcefully, several slimy fat ropes of it spurted into the first three rows of the cheering crowd, splashing men, women, boys and girls nearly 25-feet away.
"Holy shit!" Luke screamed internally. The sound the audience heard was nothing more than a lengthy zebra bark and snorted bray. "Take it out, take it out!"
But as the swelling knots continued pushing inside, Luke actually felt each bump and ridge of the hot slick cock sliding its stiffened length more forcefully into his rectum, unable to even stop his own shaft from curving its blunt tip upwards with unwanted arousal. As every lumpy knotted growth on his mate's lupine penis sealed within his fully stretched rectum, the enlarged bumps grew more firm and held the pumping cock deeply inside as it was flooding his internals with countless jets of its gruesome clumpy yellowish bull semen.
"You gotta be fuckin' dreamin'," Luke thought, because despite feeling each stronger pulsating pump, Luke's mind had actually surrendered and submitted to it ... willingly. "No! He wasn't enjoying this, but his body surely tolerated the pleasant submission to what was happening, he brayed, stretching his strange blackened lips upward and obediently as the penis inside his ass steadily jetted its soothing lubricating warmth into him. Maybe this is what the men and boys I've had for 3 years sensed, too, whenever I was pumping my climaxes into them. Maybe being the bottom wasn't so terrible. He'd never tried being submissive before. But now, it just felt right, as if he'd been missing out on a more enjoyable ... sex romp. Oh shit! Is it pissing? Nope, just a long freaking spurt of that ... holy crap it's cum was clumpy yellow and, and stunk like sour milk and ... fuck, I'm so major horny, though I don't even fucking care! This's so damn hot!"
Luke's equine blackness of his cock painfully squirted his arousal, filling his mind with all sorts of strange thoughts he had never imagined before. Some were blatantly sex-crazed thoughts about that demanding older jock balancing its heavy ass weight against his back as it filled his bowels, but others were a completely senseless thought that this sexual act was marking him, or intimately connecting him to this studly beast of an older male teenager to be his mate. Luke imagined he was being taken like a female by his mate to satiate the hunk's needy desire for an offspring, but something didn't seem correct about that somehow, although Luke's mind accepted it with equally arousing pleasure. His mate was the one in charge, his strong leader, and his mate needed to show his boyfriend that he controlled everything, even Luke. But it was ... Tyler's musky odor and maleness that was arousing Luke even more now. And being Tyler's mate was so right, and it gave him such pleasure to be the hunky jock's mate, Luke's submission was rewarded with slobbering nibbling love nips and bites to that thick pleasure trail all along his upward spiked mohawk mane of hair.
"Oh fuck! Now ... it's trying to stop filling my ass," Luke shivered. The stiffened shaft rocked back and forth several times, buffing that glossy slick shaft through what felt like gallons of liquids in his innards. Another jet of its slimy heat and his mate's giant erection squeezed free. In snorting grunts, Luke begged, "Don't pull it out! It isn't finished yet, is it? Just slide it back in!"
The gushing discharge and release of the lumpy yellow excess pouring from Luke's momentarily gaping black sheath of his rectum belched gasses, muscles quickly squeezing tight, preventing more losses of fluids as Tyler's hard shaft exited. Thick brownish-yellow chunks of Tyler's bull cum slid down Luke's backside, running down both of his hind legs and pooled around his glossy black hooves. But Luke brayed to his mate that he'd trapped at least half of his mating juice inside him, ensuring that it should do its task--whatever that task was--satisfying the attempted mating for them.
^v^ ^v^ ^v^ ^v^ ^v^ ^v^
"Well, ladies and gentlemen, kids," Madam Illusia said, clapping her hands together rapidly, "My intimately mated new beastly creations will be returning for an encore presentation beginning in ... one hour, at 11-o'clock, this evening! And for those who want to learn how lengthy, or how savagely two gay zebra studs can continue mating in continuous fashion without stopping--or should I say, how long that attractive 19-year-old local teen once known as Tyler can mate his young 16-year-old boyfriend Luke Fuller, who, if you don't come, you'll forget was once an arousing blonde surfer and troublemaker but is now Tyler's permanent zebra mate--both will be demonstrating just how long it takes for the alpha creature, called a wolfzebul as I recall, to remove his swollen mating knots that sometimes get trapped deeply within his mate's swollen rectal cavity. Trapped, my delirious guests, until one of my workers can safely free the alpha's engorged 18-inch long red wolf shaft a few hours later, or perhaps, not until the following morning when both beastly creatures finally slumber."
"Oh, I'm a'coming back here for the next show, Madam Illusion lady," bellowed the drunkard staggering from those front row seats he and his 8-year-old daughter had risen from. Gobs of gruesome zebra discharge dripped off the man's filthy blue baseball cap. "My sweetheart's a gittin' edu-mer-cated on proper breedin' methods on all them equinos and bovinos you's been presentin' to all these farmin' folks, little lady. Came in here to teach Becky everythin' 'bout them farm animal's breedin' techni-technackle-technicallys there is on horses. Course, I cain't say I's ever seen no zeberbullwolfer kinda horse creature a'fores. Course, I cain't say I never heard a yerself 'round here a'fore now, neither."
"Stephan," Madam Illusia stated, watching four backstage men guide both of her new equine attractions behind the curtain as her guests exited the tent. She smiled at the nasty drunkard as she turned her eyes downward toward a lollipop licking child creepily standing beside the drunk's little blonde-ponytail-haired daughter. "Oh, I think I've maybe located my next attraction to join my Wonderful Freaks and Undead Monsters shows we'll be re-opening outside Paris next week, my son. So what's your name, little one? And what's the scariest monster you'd like to see feasting on another creature or human, or perhaps feasting on the still beating human heart of some captured helpless bloody victim, or on some freshly chosen human prey right from this departing audience, my sweet little creepy boy ...?"
Author's note - feel free to change the names or Monsters of all choices below, they're just suggestions/options.