Joey shivered, gasping suddenly as his body started to swell, Jill falling off from ontop of him as his torso easily tripled in size, lean muscles standing out beneath his skin as he writhed, shredded clothes falling off his body. Jill backed slowly away as she watched Joey's hair twisting together into scaly tendrils that flicked around his shoulders, his shin shedding quickly, revealing brown and black diamonds beneath. "What the hell Joey?" Jill asked, still looking frightened as Joey's chest started to swell, ballooning out into a pair of scale covered breasts, each easily as large as Jill's plump ass. Joey looked down at himself and moaned, "This is amazing!"
Jill watched, stunned, as his legs grew together, growing longer and longer, into a tail easily forty feet long and massively muscled, the huge couch groaning under his weight as he smiled at her, showing sharp canines and her knees shook slightly, and she leaned forward kissing Joeys newly feminine face, the scaly hair tendrils flickering over her face as her lips met his huge ones, his forked tongue flicking over her lips as the last change took place, his cock, massive now, easily a foot and a half long, splitting in two and growing barbs over it's length. He moaned and Jill pulled away, panting, "You look amazing! What are you?" Joey smiled, "I guess I never was meant to be just a boy. I think I'm a Shemale Megaboa,a type of prehistoric gigantic snake."
Jill nodded, eyes sliding down till they saw those double cocks and she blushed, "Wow...I think I'm going to faint." He laughed and then moaned as she grabbed both and started to jerk them both off, his tail flicking over the couch as his massive clenched in the fabric, feeling Jill's muzzle slide down over one of the cocks as she continued to jerk off the other one he moaned again then stopped as he realized Sara and Toy were staring straight at him, mouths open.