One of the "boys" in the class looked confused as he couldn't stop rubbing his bulging crotch. Ty grinned as he saw thick black hairs sprout from under the guy's restricting shirt. Ty kept the class from consciously realizing that something was amiss. All the boys could do was squirm in their aging bodies wondering what was wrong. The older boys who were halfway through puberty already had flowing full beards.
Mr. B. waddled through the door, his giant package swinging in front of his bowlegged stance. It was a miracle no one saw him in the hall. He managed to turn the key to lock the door but when he turned to face the class he realized he couldn’t take another step. All the boys, no, men in the class grew wide eye at Mr. B’s mammoth dick. Ty could see quite a few mouths water and heard a few flys pop open as the older student’s mature dicks sprung to full erection. Ty grinned at the former teacher’s pet who was stroking his shlong automatically at the sight of his beloved teacher’s gigantic cock.
“What happened to you?” asked Ty as he raised his hand. This caused Mr. B to fall on his rear as his balls to swell to 400 pounds each and his dick was as big around as full-grown tree and nearly as long. His cum-storing glands inflated and reached into his belly as his hairy midriff popped the buttons of his conservative shirt until a hefty paunch hung loose.
Mr. B tried to find an answer in his head which was being overcome by his urge to jack off. “I guess I had my final puberty” he said blankly. With that the men in the classroom finished their transformations and ripped through their clothes all at once. Most were long haired and bearded, ready to take on years of teenage sexual frustration that hit them all at once. Ty could notice the pre dripping from the former teacher’s pet.
Ty raised his hand, “How about you teach us more about sex?”
Mr. B winced as his package grew even bigger, stiff, and aimed at the teacher’s pet. “Uhhhh.... you there....please help me with a demonstration.” The teacher’s pet got up and approached Mr. B gingerly. “Uhhhh....Now it very important to always wear protection.” Mr. B grabbed a prop that was within his reach-- a construction worker’s hat-- and tossed it on top of his cannon. The naked men laughed, all the while stroking their hard-ons. “Uhhh....there are many kinds of sex....uhhh...ooooh...one way is oral stimulation.” The teacher's pet began licking the base of Mr. B’s humongous shaft and Mr. B shivered in pleasure. The men started pairing off and started exploring each other. The teacher’s pet hugged Mr. B’s humongous dick and lubed himself up with Mr. B’s pre that was flowing freely. A few moments after he straddled Mr. B’s dick and sat on his belly Mr. B let out a deep bellow and ejected gallons of cum over his class.