The boys just layed there on their backs.
The orgy ended almost as fast as it started.
Chris looked over to his left, looking at his little piggy, 'best birthday ever, I wonder what else I can make him do' he thought with a mischevious grin on his face.
Ruben panted, grunting with each exhale through his snout. David still holding Ruben's corkscrew cock in his hands, looked at his one flaccid member, it looked so disappointing compared to the pig's...
Chris finally got up as well, and looked over at Joseph's diaper. "Can I get a new one Joe?" Chris asked, Joseph simply nodded and got up and walked to a wardrobe in the room.
Ruben got up as well, almost falling flat on his face, due to his trotters, Billy caught him just in time.
"Thanks, *oink*, hard to walk on these" Ruben grunted with a smile, as he walked back to the changer.
He looked around to find Chris, who was lying down, being changed by Joseph.
"Mind if I turn back?" Ruben asked, hoping to get rid of those damn trotters.
"Yeah that's fine, then you can turn into something else right?"
"Yeah, that's right, I have to change back first though", Ruben quickly used the changer, popped the pill, and within moments he was a normal boy again.
Chris walked over, now with a completely fresh diaper, and looked at the changer. "So, does it only work for you?" he asked.
Ruben looked at the birthday boy, it was obvious where he wanted to go with his question.
"Tell me what you want, I can make it happen!" The nude teenage said, as Chris' eyes lit up.
Billy, Joseph and David also quickly surrounded the former pigboy, eager to know how too!
"I can choose one for you too still, right?" He asked Ruben, who simply nodded in acceptance.
Chris thought about it, he looked out the window on to the pasture and noticed a couple of his family's dairy cows.
"Can you make us a bull or a cow?", he asked, pre-emptively ripping of the diaper he just got a few seconds ago, his cock fully erect.
"Sure, but I would need to know, bull or cow, since one has an udder, you know..." Ruben asked, irritating Chris.
The other boys were back sitting on the beanbags, watching the show.
"Go with the udder! It will be funny!" David called out, laughing.
Chris turned around and nodded, "yes okay, make us cows!" he finally answered.
Ruben hesitated for a bit, whilst reading through the options, fine tuning the perfect fit.
He selected, horns, ears, legs and hooves, finally learning from his mistake, tail, he also decided to give Chris some light fur with black spots, that way he could look the part!
And of course finally the udder, which would cause their cocks to completely disappear, but apparently their udders would function and each squirt of milk would feel like a light ejaculation!
With a bit of noise, the machine finished its work, and Ruben gave Chris the Bovine pill.
With his heart beating in his chest with anticipation, Chris swallowed the pill down and waited.
He quickly turned to Ruben, "You'll join me too right?" He asked, almost with a hint of fear showing in his voice.
Ruben thought about it for a second, before making a decision.
He could join Chris, and go with an udder or he could turn himself into more of a bull instead...