Amused with himself, Greg chuckled from Charlie's reaction then smiled. "So Charlie... what do you think?"
"First of all, I can't believe you put your spunk in my mouth and I swallowed it!"
"Is there something wrong with that?"
Charlie heard the words spoken, having to think about them for a second, feeling changes happen in his mind.
"You know, at first... when you put your cum in my mouth and I swallowed, I was pissed. Now... I can't help wanting to taste more!"
"Sounds exactly how I feel! You want some from my tap?" Greg finished with a sly grin.
"I... I do... but..."
"But what Charlie?"
"I... I don't... I don't really know. It feels like my insides are all twisting and knotting like a thousand butterflies are swarming around in my stomach!"
"Oh really? When did it start up?"
"Just... just after I swallowed... swallowed your... sss... spunk."
"Well it sounds like you are going to go through something and we will see what happens."
Still standing in front of the main door, Charlie dropped to his knees and moaned. Greg watched Charlie with great delight and contentment, seeing what Greg had hoped for since feeding Charlie his spunk. Charlie's entire body spasmed, all of his muscles convulsing at one. Just like Greg went through, Charlie's muscles exploded in size, pushing his office clothes to their limit, forcing them to be taut, showing off each and every curve of Charlie's now bulky muscles. Just as rapidly as his muscles bulked up, thousands of coarse hairs pushed out of his pores, covering him in dark brown fur. Charlie looked at himself in amazement as his view changed from his skull changing, his face pushing out to form a muzzle while his ears rounded and moved to the top of his head. Charlie's tongue flattened out and widened while his i-teeth lengthened into fangs. Charlie then focused his attention on his hands which thickened, changing into prehensile paws, the skin thickening up on his palms for his new pads and long, black and slightly curled claws developed. Charlie felt tightness in his socks which shredded as his feet finished changing into paws with slightly longer and shaper claws. Charlie moaned in slight pain, feeling constricted by his still human clothes binding all of his muscles, fur poking out through some of the tears in the fabric from all the strain. As Charlie felt things finish, he threw his head back in a thunderous roar, ripping all the clothes on his bearish body from constricting his muscles past the point where the clothes could contain them. Now feeling free, Charlie put a paw to his still human shaped cock, realizing that he was slightly thicker than Greg, which pleased him since he had always been the bigger one in that department. Charlie rolled his eyes into the back of their sockets, feeling the intense pleasure from it all, covering his paw in his stringy precum.
When he was finally able to speak, Charlie formed his first words which came out deeper than he had ever expected them to be. "Dude! Now I know why you said that we would leave things be, even when you didn't know if you would remain normal or change back into this! This is super intense and I cannot imagine how sex will feel from all of this."
"To be honest, I had no idea that I would change back into this form, but I am glad that we are able to go back and forth, just to be able to lead normal lives with this being our little secret. I am also glad that you changed too! Now we can have fun together in more ways that we knew before!"
"Yeah bro, I am glad to hear you say that as I cannot wait to get my first full helping of cum come straight from the tap!"
Just as Charlie was about to place his muzzle in front of Greg's dripping cock, the door bell rang. Even though Greg wanted Charlie to suck him off right then and there, he wanted to see who it was. When Greg looked through the peephole, his gaze widened when he saw who it was. At the door was a twinkish looking pizza delivery boy with their pizza's in hand in the warming bag. Greg knew that they could have even more fun if they let him in and changed him too, but Charlie had his muzzle wrapped around his cock, giving him one of the greatest blowjobs he ever received and Greg wanted him to finish and shoot his load down Charlie's hungry throat. Greg decided to...