Just a second later, the door of the Change Room opened wide. "Oh, shit, we forgot to lock ourselves in!", Derek panicked.
On the threshold stood the store clerk, a pleasantly devilish grin on his perfect face. "I'm sorry, dear customers, but there are other people in need for the Change Room". He came closer to Jake, still sitting on the leather couch, and grabbed his horse dick. "So I think I'll have to solve your problem first-hand". And then started performing a masterful hand-job, while licking the flat tip of the cock sensually.
"Um, dude, you know what's gonna happen to you if you drink from that hose, right?", Derek asked.
The clerk stopped pleasuring Jake for a second and looked straight at the other skater, a smile on his face. "Of course I know. I work here, remember?".
Jake stared at the handsome man. "Y-you don't have to do that if you don't wanna, dude...". As much as he wanted to infect other people, the clerk had been nice and helpful and made him discover the awesome powers of the item sold in the shop... Turning him into a freak didn't seem right.
The suited man, however, wasn't of the same mind. "My job is to make sure my customers are always satisfied... In every possible way", he said, before doubling his efforts in making Jake cum the fastest possible... And a mere couple of minutes later, he succeeded, avidly drinking the hot, cursed sperm. The clerk sit on the couch next to Jake, and discarding his elegant pants and designer underwear. "Now I'll just have to wait until it's done", he declared, the mushroom tip of his 7'' dick already flattening and gaining girth. "But in the meantime, I guess I can explain to you two how being a werehorse works", he said, managing to maintain an impeccably professional look even while his shaft was transforming into something inhuman.
"Were... what?!" Derek and Jake replied at the same time. "Oh, come on, werecreatures don't exist", the latter added.
"Says the one who just changed into a horse-cocked skater jock", the clerk replied with an amused grin.
"Erm... Yeah, I guess you're right...".
"But as I said, werehorses: from now on, every full moon night, and also every night immediately preceding and following a full moon, the moment the sun sets we will transform into massive, muscular anthro horses. You can't transform at will, and most importantly you can't force yourself not to change; regardless of where you are or with who, you'll turn into a lust-driven horseman. This is a permanent curse, along with the cock transformation, unless you manage to undo it with one of the other items in the shop... And of course, whoever takes a load from our sperm in their mouths or asses will become a werehorse, too".
"Mh... That's interesting, ya know?". The three horse-cocked guys turned towards the open door: the teenager-turned-king-sized bear was looking at them with the cockiest smile, a meaty hand twitching his rock-hard nipples alternatively.
The clerk smiled at him invitingly. "Want to join the herd, dear customer? Mine is fully loaded, as you can see", and the businessman gestured at his brown and black mottled cock.