Emerging from the steamy shower once more, Ty grabbed a towel and admired his new self in the mirror. Tall, buff, and hung, he was the epitome of manly. As he dried off, caressing his thick muscles and shaggy body hair, he couldn't help but linger on his huge new cock. In response, it began to grow stiff again until it had pumped up to its amazing full size. A solid foot of dick as thick as a pop can, with a massive mushroom on top.
“Mmm.” Ty grinned, giving his new member a few playful jerks. “Quite the stud now, aren't I?”
He looked back to the mirror suddenly and blushed deep red as another idea hit him.
“I wonder...” He trailed off, and gripped his cock in his hand, willing it to grow into a true horse cock.
In response, Ty groaned as his huge sensitive prick began to inflate further. In no time it was several inches longer, the tip getting thicker and rounder, seeming to flatten. Ty gasped as he felt it expand beyond the grasp of one hand, and looked down in amazement to see it was now half the length of his whole arm, throbbing obscenely, and starting to darken in colour. The tip too, was bigger, but getting flatten, and the slit of his cocktip was now pulling downward.
“Oh fuck!” Ty grinned, hefting his huge cock with both hands along the length as it grew... and grew... and grew still bigger! Now it was a jet black, with huge thick veins and a massive flat mushroom cap, as thick as his forearm and as long as his whole arm. Ty gaped as he realized inches were irrelevant, he could now measure his dick in feet! He now had a true fully horse cock, as it tugged and pulled a little longer before reaching a massive girth and length, to Ty's astonishment now longer and fuller than his whole arm!
“Holy shit!” He whispered in disbelief, rubbing the tightly inflated flesh and watching his tip flare and swell a little more. “Wow, horses are fucking lucky!” He gripped the base of his shaft in both hands, the horse flesh almost too much to hold, and slowly jerked it up and down the length several times, shuddering as it gave him amazing sensations. His huge tip flared further, tighter, and Ty had to bite his lip to keep from cumming right there.
“O-Oh shit.” He said with a laugh, hoisting his huge horse dick against his chest and marvelling as the tip stared him right in the face. He sat down on the toilet, curious, and gave himself a lick on the head. His cock shuddered, he shuddered, and almost instinctively bucked hard into the air, grunting. Taking a breath, trying to keep from releasing, he licked his tip again, bringing washes of hot pleasure over his body. Now broken out into a heavy sweat again, he could practically hear blood pumping into his cock, making it bigger still, firmer. He was going to blow! “Easy...” He gasped, willing the arousal to go down. “Easy, not yet.”
“Damn.” Ty grinned. “What a fantastic fucking dick. Who would have thought?!” Then he looked down at his comparatively wimpy human balls and a sly smirk took over his face.