Mary suddenly was struck with insapration. A horse. But then he paused. Yeah horses are known for their size but he wanted more. So he went to work with his therory.
Norm was waiting behind him fondling herself inpatiently. She was getting herself so worked up thathe she started to finger herself making soft wipers and moans. She felt a big hand grab her wrist and yank her hand out of her folds.
Her eyes shot open to only gasp at the sight. She could tell it was Mary but he was in the middle of his change. His fur was a mixture of gold and brown, getting darker by the second. His mane was receding around his neck except on the back of his head. His muzzle was both gaining length and width. His kitty ears were folding over themselves making them cylindrical and pointed, like a horses.
Hover the reason behind Norm's gasp was his frame. He was defiantly bigger. A good head taller and twice as thick as he once was. She could even see his muscles pulsing and growing as he grabbed her by the waist. Even his hands were bigger, fitting his ever increasing mass.
Norm gazed down to see his hands but then saw his throbbing cock. Flat tip and black with veins the width of her feminine fingers. It was already as long and as thick as her forarm and it didn't seem to be slowing down anytime soon.
"What did you do?" Norm managed to whisper. Still gazing at the pillar of maleness now getting close to resemble her thigh.
"I put two vials of man and two vials of horse." Mary said in the most enticing baritone voice ever. "And now I have to punish you for starting without me." He said with an evil grin.
Mary's voice was so low that Norm could feel the bed rumble. But that didn't register when she heard him say that with that face. Without missing a beat Norm felt Mary's horsecock press against her folds. it was so hot that she thought she could smell her juices boiling from it. And with a tightening of Mary's hands around Norm's waist and a wink he speread right I to her.