About a third of the way back home, Kyle stopped. A wave of anticipation and nausea rose in his stomach before he doubled over in agony. He stumbled forward, catching himself on a tree as his guts rumbled. He felt bones shift and reform under his skin as his back arched and his pelvis was forced backwards. With dawning horror, he watched as the front of his groin began to cleft. He felt his vagina shrink, becoming a second anus. The cleft of his former crotch began to grow, straining the already stretched pants and underwear.
With a series of pops, his pants tore. He felt two new legs push out in front of him, shapeless tubes of flesh growing until they reached the ground. He wanted to throw up as he watched bones and muscle form, his new second plump ass pushing out in front of him. Soon the new legs matched his old pair as his new pelvis clicked into place. With a jolt of pleasure he felt his two new vaginas form underneath him, his two crotches pressing against each other.
He didn't have any time to contemplate his new change before his legs began to move on their own. He pulled himself off of the tree, his four legs carrying him home. Each step was perfectly coordinated to keep him from tripping on either set of legs, his front legs walking backwards while his rear legs walked normally. He watched his butt bounce up and down with each step, while feeling the rear one bounce in turn. It was quite distracting. To squeeze both sets of hips on his small frame, they both arched out considerably, giving him a shelf on both sides of his torso.
As he walked up to his apartment building, his legs deftly bounded up the steps. He wasn't sure how they were so coordinated, barely missing stepping and tripping over each other as they competed for room beneath him. Reaching his door, he leaned forward, pressing his front ass against it as he opened it...