Zach's mouth was dry, and all the blood in his body seemed to be centered on his growing horsecock. Cera was on all fours like an animal. Her hips thrust backwards, displaying more of her bare ass to Zach. Her asshole has puffed up significantly. And an inch or two beneath it was the largest vagina Zach had ever seen.
And despite the dirty, animal smell that Zach caught coming from Cera's pussy, he couldn't help but be drawn in. His hands fumbled at his fly. Slowly approaching with his cock jutting straight out, Zach took aim at Cera's soppy cunt. For a moment, he wondered if he should.
But Cera's transformation had continued while Zach had been mesmerized by his own. Her nose and upper lip fused together into an obvious muzzle. Her nostrils expanded, stretching out with long hairs sticking out the ends. Her ear lobes became thinner and wider. It didn't take long for her ears to finish reshaping themselves into sow ears.
Once her changes finished, Cera snorted in pleasure. And that's when Zach threw caution to the wind. His cock was ready, and he needed release. As he pushed forward, something else pushed out. Above Zach's still human ass, a tail had begun to grow. It's growth continued with every push, and every grunt Zach uttered.
Meanwhile Cera was lost in a world of passion. She didn't know who was fucking her, but she didn't care. The massive cock was filling her like no other had. Her own tail sprung from her tailbone, gaining that signature pig spiral to it.
The scents in the air were a heavy mixture of sex and barnyard animals. And things were only going to get worse the more Zach and Cera gave into the urges. So what happens next?