Staring in terror Paul witnessed a furry tail growing out of the trousers of the boy in front of him. It reminded him of a german shepards tail and it immediately started to sway from side to side.
The boy seemed to be in pain, as his whole body shivered uncontrollably, and started to shed his jeans. Then he looked back to Paul, eyes wide in terror and... arousal?
"What's happeningrrrrrr..." he whimpered, kicking his trousers and boxers from himself and off the rails.
Growling and whining animal-like the boy started to stroke his penis which was transforming into a dog's cock now, too.
Pauls viewing angle wasn't too goood, but the boys motions and the moans and growls that came from him showed clearly that he was in serious arousal. His dark fur growing hands furiously stroked his slick doggy cock that was now fully grown out of it's sheath and he seemed to enjoy it very much.
Paul gasped, his heart beating faster and faster... everyone on the coaster was changing shape and more and more passengers started to masturbate wildly... growing fur and more animal features.