And a change of sex. Although you know it is wrong, you can't help staring at the man's crotch. His manhood, fairly good sized when you first noticed it, has shrunk to that of a child and contuinues to dwindle. At the same time, a new protrusion forms on his lower belly. It darkens and swells, and two nubs push out from the top - a mare's udder.
By the time you look up to the man's face again, he is looking very horsey. His nose and mouth have already shifted forward and gotten wider and thicker, and his terrified eyes are much further apart. But why is this fast-changing man afraid of you? He stumbles back on feet that are becoming massive dark hooves, and gives a strangled neigh that signals the loss of human speech.
His body swells and lengthens, bones and muscles forming under sleek, black hide. The man looks more like a deformed horse than anything else, and as he falls forward into newly-formed forelegs, everything finishes up. He shakes himself - herself - and twists around to look at her new mare's body.
You have to admire the beautiful animal - she is a perfect black Percheron mare, appearing young and healthy. Then you see that she has turned to look back at you, her eyes showing white and her ears laid back.
You are puzzled by her reaction. "Why are you afraid of me? I didn't do anything to you!"
"Of course you didn't" A rich, sensuous female voice comes from behind you, causing you to spin around. A dark-haired beauty dressed in some sort of white robe smiles at you. "I changed him. Just as I am going to change you...."