Ty knelt forward and crawled over to Buck's side for a better look. This was all happening so fast, and it seemed so surreal, but oddly enough he was enjoying it. His friend had given him the permission already, so Ty raised his hand to the handsome deer's back thigh and held it there. Buck's erection was starting to fade back, the organ deflating slowly and turning limp.
"Sorry." Buck blushed under his cheeks, turning to see Ty at his side. "I think I'm a little nervous. I've never... well..."
"Hey, hey!" Ty raised his hand quickly, trying to ignore the sight of the smooth pink shaft shrinking back. "It's okay, buddy. If you don't want to, it's okay. We'll forget it ever happened."
Buck shook his head. "No! It's not that. I... I do want it. I really do. I'm just a little overwhelmed. And... and..."
"Here." Ty brushed the deer's side. "I know what will calm you down. It works for me."
"Oh?" Buck looked back with curiosity.
Without a word Ty gently slipped his hand up the deer's leg again. He rested his palm on the inside of the deer's thigh. Buck's breathing grew heavier and his eyes widened. Though there wasn't fear, just excitement. Ty smiled at the animal's reaction, seeing he did really want it, and he gently reached up further still, placing one of the deer's decently sized balls in his hand. Buck blushed deeper now and shuddered. His sheathed penis began to bulge once more.
"There. See?" Ty smiled. "Nothing to be nervous about. We'll have some fun together, enjoy your changes. Maybe add some more. Sound good?"
"Sounds great." Buck said smoothly, and relaxed himself.
Ty experimented carefully, getting to know his buddy's equipment. There were two golf ball sized testicles hanging between his back legs. Soft, squishy, and full. He rolled them gently in his hand, caressed them, squeezed them in curiosity. Buck let out a soft gasp and let his head fall back in front of him.
"Feels great." The deer grinned stupidly.
By now, the soft pink deer member had filled up again and was getting fully hard as Ty teased his balls. It was a little more than eight inches long fully erect. Ty gaped, blushing, at the size of the gently slendering cock. And while still playing with Buck's balls, Ty raised his other hand, which was sweaty, and gently cupped it under the deer's shaft. The first thing the human felt was the warmth. The soft pulsing warmth, as well as the slickness from the deer's sheath.
"Oh man..." Buck giggled. "We've crossed some kind of line here, for sure."
"You're huge!" Ty complimented, truly fascinated as the member thickened from full arousal.
"Well... from your point of view." Buck blushed.
Experimentally, Ty closed his hand around the deer's penis, gripping it gently around the middle of the shaft, and gave it a squeeze. The deer rewarded his friend with a pleasant murmer of approval, which encouraged Ty further. He pulled it gently towards the tip, feeling thick veins underneath the flesh, and marveled as the tip pulsed bigger for a moment.
"Oh..." Buck gasped. "Oh wow. I like that, Ty. I like that a lot."
"Then let's keep going." Ty grinned, and proceeded to continue his slow jerking. The member in his hand stiffened further, seemed to fill thicker, and tensed with his stimulation. The entire process was such a turn on for the young boy he felt himself getting hard. He was pleasing his animal totally, for Buck was lost in the feelings and clearly on his way to getting a climax.
"Ohhh... if you keep going... I'll... I'll let go." Buck warned, his eyes closed in bliss.
"I'm okay with that. Are you?"
"Absolutely." Buck responded, starting to tremble.
Ty kept jerking, knowing he himself liked it faster when he was getting closer, and sped up. With frantic jerks now, Ty gripped tighter and kept pulling, the organ thickening more and more and growing deep rosy red in color. Now the tip started to grow out as orgasm got closer, the head of Buck's cock swelling from a somewhat small size to the girth of Ty's thumb and index finger together.
"Oh... oh!" Buck suddenly kicked his back leg and grunted. "Here it is! Here it is!" He gasped deeply, and let loose. The cum splashed from Buck's tip and squirted his stomach, pouring out for a moment in thick juicy white streams until he was emptied of seed.
Standing, trembling, the deer let the incredible sensation fade and jumped as Ty squeezed him one last time for the few remaining gushes he had. Dripping, spent, the deer looked back with a healthy glow on his fade and a warm smile.
"Did I do good?" Ty asked, grinning.
Buck only smiled back before he collapsed on his side and fainted.