The door opened so quickly and quietly that Katy didn't even notice until the man was in the room. He looked about twenty four, and was relatively well-built. He also looked rather shocked.
"Wow..uh..wow..ummm, my bad..I didn't realize you two were..uhh...," he stammered.
Katy leapt back, frightened, dropping the dildo onto the floor. "What the fuck???" she yelled, both embarrassed and frightened. Clara, however, jogged over and lapped at the man's fingertips.
"Hi,Clara, how're you doing?" he asked, happily accepting doggy kisses from her.
"Wait...you know about us..err..this...err" Katy asked, trying to find words that would adequately describe this odd situation.
"Yeah, my name's Rex. Wait..didn't we meet out in the park? You must be Katy," He extended his hand to her.
Katy took it, breathing a sigh of relief. "Nice to meet you, Rex. Let me just go lock the door. No need for more surprises, know what I'm saying?"
Rex laughed, "Yeah, I get ya. I would have brought my wife with me, but she had to work down at the vet's office."
"Oh...that's too bad, but I guess there's always next time," Katy said, fingering the collar around his neck. "I have to admit that I was kind of looking forward to having a dog inside of me." Katy realized she was massively aroused due to all of the canine pheremones in the air. She felt slightly guilty about it, but Clara licked her hand encouragingly, so she knew she hadn't crossed a line, at least not yet.
"Oh...we don't have to wait," Rex said, "I found out something just recently. The dildo only transmits the weredog condition. After you've had it once, you don't actually need it again. All you need is the collar and a dog. Sure, the dildo feels really good, but I feel a bit odd, being a man and having a dildo rammed up my ass and liking it. So yeah...all you need to really do now is wear the collar and lick a dog's sex organs. Let me show you." Rex peeled his clothes off quickly, standing naked in front of Katy, save for the collar.
"Are you ready for this?" Rex asked.