Paul suddenly felt a growing tightness in the front of his shorts. unable to take the pain he pushed aside his modesty as he dropped his shorts, leaving him in his stretched to the limit briefs.
Seconds later the fabric at the bottom gave way, his now huge balls dropped out along with his maturing donkey dick.
"HEEE HAWW!" he brayed at the sight of his once small privates. He tried to cover them with his hands, but they were just too small. But soon he didn't really mind, as his mind was clouding as his new donkey balls pushed hormones into his system.
Looking around he could see the other boys had similar bulges in their pants and shorts. A smirk flowed across his face as new thought began to flood his mind.