The huge draft horse easily mounted Mike, while the others stared in horror. Mike screamed. It started human and ended as a whinny, when the great stallion unloaded its seed, and dismounted.
Mike felt so strange as what seemed like gallons of hot cum sloshed in his loins. Sticky white cream ran down his rear leg, and matted his tail. He could feel his nipples swelling. Hair sprouted on his spine forming a visible mane from the back of his head to the end of his torso, and his torso was shrinking. Well, it was shrinking or the horsehair covering was working it's way up his torso.
Oh, no! thought Mike, I'm going to turn into a full fledged mare if these stallions keep mounting me.
A mounted policeman rode up on a stallion to investigate the ruckus, and was thrown off his horse and into a pile of manure in the gutter, when his horse mounted Mike. This time the scream was more horse than human. The bulge descending in his abdomen suggested that Mike was with foal. The hair crept closer to his pecs. He started to cry.