"Come on Eric we have to get you outa here before the race starts!" Scotty exclaimed. Pulling and tugging on Eric Seemed to have no effect on him. He simply wouldn't budge.
Scotty was startled to hear Riley's voice right behind him, "Scotty whats going on?! Lets go!" Riley and Jack had joined Scotty and the slightly horsefied Eric on the track. The drunken crowd started jeering and taunting for the race to start, and as if on cue it did.
Scotty grabbed on to Eric as he took off running, Eric's tail swishing against his legs where his shorts ended. Eric basically giving him a piggy back ride. The others did the same thing grabbing onto other boys with horse endowments. As they are all being run down the track they boys look left and right at the other contestants ranging from what looked like anywhere from 13 or 14 to 21 or so that had no "riders." They were starting to change.
First they swelled in their chests, and their already obscene bulges started to pulse. You could seem them growing and pushing against their pants trying to escape. They did just that and the boys saw something there suburban lives had not shown them before. Human cocks were lengthening, changing color, changing shape. The boys lost what had been taken away from them at birth as a skin started to form over their cocks and attach to there now bloating bellies. The changes seemed to accelerate as the changes to the boys groins did the same. Their cocks changed in their new cocoons and started to emerge from their sheaths. A young teen, the one who looked 13 or 14 was pawing at his fully changed horse-hood as he continued to run and it seemed to accelerate his changes even more.
Soon testicles, arms, legs, abs, chests, and necks expanded to equine proportions. The boys continued to ride their chosen human horsies down the track as they remained mostly unchanged. They watched as the other boys fell to all fours as the opening neared. Hands, and feet were hoofs and they were all almost fully horses now. They all had their youthful faces which as they continued to run expanded out. Causing the boys to moan and cry out in changing voices, "ugggHHHHHHHNNEEEEEEEIIIGGHHHHHH" they all ended in loud whinnies as their manes grew out and down their strong necks and backs. Their noses pulsed and pushed forward forming their muzzles. Their eyes spread out and their noses broadened and came together with their mouths. The 13/14 year old was now almost completely horse now as his muzzle was the most progressed as they entered the opening the horses with proto muzzles stopped dead and the gate closed.
The young teen who had accelerated his changes now started to buck as he learned the ways that equines get pleasure from their horshoods. Just as he was about to cum he let out one last boyish moan as his voice finished changing to that any horse would have. "ooooHHHHHEEEEEEIGGGHHHHH" and his muzzle finished with a crack. As he came he shot what was left of his human side and even shrank a bit becoming an even younger colt than he was. As if he shot out maturity just now.
The other colts in the room had finished their changes now too, all accept for the ones that the boys had ridden. "We gotta get out of here now!" Scotty says as he grabs Eric by the hand and pulls hard. He manages to get him to move but Eric still seems to be in some kind of stupor. The guys that Riley and Jack had been riding immediately started their transitions to equine hood as soon as the boys dismounted them.
"OKKKK we really need to go!" Riley yelled helping Scotty to drag Eric who was still very much part horse.
How would they get out if they can? and where would they go?