Caleb's cock and balls grow even more.

Suddenly, Caleb groaned. His whole body was filled with heat and he could feel his heart thumping in his chest. The growth came slowly, but the rush of pleasure that came with it was too much for him to handle. It started with his nuts. They slowly ballooned outward, churning and roiling. He could feel them pressing harder and harder against the pouch of his already too-tight briefs. His cock began to grow next, pulsing in rhythm was his heartbeat. Through the fabric of his sweat pants his nine inch softie began expanding longer and fatter, pushing further down his pant leg. After a few minutes of heavy breathing and rocking in his chair, Mack finally noticed something was happening.

By this time, Caleb's cock was pushing the twelve inch mark and his balls were larger than baseballs. His crotch was packed obscenely and it seemed to still be growing.

"Holy fuck, bro! What's happening to you?" Mack whispered. He had pulled out his cell phone and was recording the writhing mass of flesh as it grew bigger.

The pleasure of growth was causing Caleb to bone up, and his cock stretched even deeper down his pant leg. The veins on his cock were massive as it pumped full of blood, and they showed through the thick material of his pants clearly. By now his briefs were clamping down like a vise on Caleb's nuts, and he had to get free before they strangled him. He reached down and tore the briefs off, tearing the seams. He adjusted his cock too, freeing it from his pant leg and letting it spring up behind his waist band. It was massive, jutting up like a fat log of skin and veins up to his mid chest. The growth was slowing, but the waves of pleasure racking his body were growing more intense. His cockhead glistened with precum, as the clear slimy fluid began to sleuce out of his dick's gaping slit like a lazy river.

Caleb was mad with pleasure and power. He was only barely aware of the room he was in, or of the presence of Mack, who was still filming the lewd scene.

He moaned wildly and pet his giant tool, trying to wrap his hands around its massive girth. Caleb had no idead how long he sat there, humping into his arms and chest--time seemed to stop and the only thing he could perceive was his own god-like cock.

This was his sign. He had been chosen after all.

A voice, deep and masculine and powerful and wild, rang out in his head: SOW MY SEED!

"Yes, Lord." He whispered. "I will do as you command."

The pleasure only increased, but Caleb grew more conscious of his surroundings. He saw that the study room he and Mack occupied was out of view of other students, and he saw that Mack the straight-bro, jock-idiot was still watching enviously. The dumbass still has his phone out and was recording.

Caleb's eye's met Mack's, and then he lunged forward and grabbed the muscle jock by the hair. "This is how big my cock is, you fucking faggot." Caleb shoved Mack's face roughly down on his cock head.