The two hurriedly walked to the shop, ignoring the stares onlookers gave them. Josh's among them. He kept his distance, but managed to keep up with the two. They were walking awfully fast. Josh had broken into a brisk jog to keep up. Katie and the Shopkeeper were on hooves, with more powerful legs. They had no trouble setting a fast pace.
Katie's breathing was becoming faster and faster, not because she was tired but because she really, REALLY needed to feel that thick horsecock inside her again. Her pants were barely able to contain her growing ass. As it was her tail was only being kept in check by the coat.
Josh temporarily lost them when they turned down a hallway he wasn't familiar with in the mall. Actually he hadn't even realized there was this hallway. Did they put in a new wing? And where did that shop come from? He saw Katie and that other person, he assumed to be a man based on his size, in the big brown coat go inside. Josh saw the man stop to lock the door, and cursed to himself. Now the only thing he could do was stand there and wait.
Inside, Katie quickly removed her outer garments and now ripped clothing. Katie saw her body was now covered in pale horse hair, and was standing on hooves. She snorted in the musty scent in the room, feeling her enlarged pussy getting very, VERY wet. She looked to the Shopkeeper and internally gasped, while she released a very loud sigh. Having shed his clothing as well, Katie's pussy started clenching and unclenching in a very equine way.
He was more horselike than last time. His body was thicker, rippling with muscles hidden under a black coat. His face was a full equine muzzle, with a white stripe running down the middle. The fur was longer around his hooves, feathered being the proper term. But most notably, and to Katie's delight, his cock seemed larger than before. The black rod was spotted with pink, and already erect. The flared head had pre rolling down its length, all the way to its owner's grapefruit sized balls.
"Ready?" The Shopkeeper asked. He slowly approached his mare, cock held in one hand, the other held out to fondle Katie's massive breasts.
Katie responded by whickering, and tossing her head up into the air. The Shopkeeper wasted no time to slide his cock between her breasts. The head was just below Katie's collar bone, and she was more than happy to start licking the pre from it.
Outside the shop, Josh heard the strangest series of sounds. At first he thought someone might be having sex based on the heavy sighs and scuffling. Then came the neighing, the volume progressing as more time passed. Josh felt himself growing hard, and wondered just what on earth Katie was doing in there? Did she have some kind of bestiality fetish?
He would have never guessed the truth. But his curiosity was getting the better of him. Josh went to the shop window to try and see what was going on inside...