Meanwhile, Zazh had lit his own candle. He was in their bedroom, thinking about Cera while sampling the scent from his own burning candle. He'd purchased it only a few hours earlier.
He had barely noticed Cera's abnormally large rear at first, but was now enfatuated with it. He was suddenly obsessed with it - with playing with it, and squeezing it. He was undeniably aroused, as evidenced by his erection, which seemed to be growing.
As he thought about what he'd do to his girlfriend's butt, his penis became flacid and begand to swell without his notice. Rather than stopping at its normal dimensions, it continued to grow. It slithered through the hole in his briefs and down a pant leg before it began to swell, creating an outlind in his trousers. As his thoughts became more sexually aggressive, his member began to stiffen, tenting his pants.
'That great, big, beautiful butt,' he thought.
Then, his pants ripped, starting with the leg, as his member hardened and sprang upward. A long, thick, equine penis pointed ahead and signaled his excitement. Slowly, a blackish brown fur grew about his testicles and groin, turning from pubic hair into pubic fur.
Back in the other room, Cera's changes continued to progress.