Justin's new horse cock emerged to its full length from its thick sheath. "Now, whatever will I do with you two?" he said as he stared down at the two cowering pig boys.
Justin was about to transform the pig boys into sow girls when he felt something large grab him from behind and lift his body into the air. Justin saw that he had been lifted into the air by another anthro stallion that was even bigger than him. Before he could struggle the larger anthro horse drove its cock deep into Justin's anus!
Justin let out a loud neigh as his mental will was overcome by pleasure.
The larger stallion grunted and neighed as it humped away and began to force its mental will on Justin.
Justin felt himself being transformed and was shocked to see his large horse cock rapidly shrink until it disapeared completely and formed into a pussy. He was no longer an anthro stallion, he was an anthro mare!