As Don trotted happily off to play with some other dog slaves, Matt wondered if he could make any more fun changes. His friend Billy lived near the park, so Matt decided to call him up.
"Hello?" Billy answered.
"Hey Billy," Matt said. "I'm over by your place, walking Don. You could come say hi."
"Yeah, sure, I'll see you in a minute," said Billy. Sure enough, he soon walked in through the gate of the park. Matt waved him over. Billy was tall and muscular, a big jock with a handsome face. He was wearing a tank top, gym shorts, and big sporty sneakers.
"How's it going?" Billy said. "Don looks like he's making friends."
Don was lying on his back, two other dog slaves having completely dominated him. One big burly slave was crouching on Don's face, his jockstrapped cock pressing right up against Don's cheek. The other slave was short and twinky, but he'd nonetheless managed to pin Don's legs to the ground so he couldn't move.
"Yeah, he's a good boy," Matt said. "Hey, Billy, can I tell you something weird?"
"Sure," said Billy. They both sat down together on a bench.
"Do you remember a time when Don wasn't a slave?" Matt asked.
"What? No, you've had him all your life ... haven't you?" said Billy.
"That's the crazy thing -- no, I haven't," said Matt. "But I found this magic wand that let me turn him into a slave, and now everything just remembers him always being mine."
Billy laughed. "Uh huh. A magic wand. Sure, dude."
Matt pulled the wand out of his pocket. "No, really," he said.
Billy rolled his eyes. "What are you talking about? It's a stick," he said.
Matt smiled. "Okay, I'll prove it. Billy, I'll turn you into a dog slave."
Billy laughed again. "Okay, sure. Go ahead. I dare you."
"Are you sure?" Matt asked.
"Yeah. Go for it. Turn me into your little slave," Billy laughed.
"Okay," said Matt. He waved the wand at Billy. "Let's start by taking away that cocky voice of yours."
"Hey, what do you mean cocky? What's wrong with my ruff! Woof woof!" Billy's voice abruptly cut out, replaced with barking. He looked stunned and tried to speak again. "Arf arf arf bark!"
Now it was Matt's turn to laugh. "Hey man, you're the one who dared me!"
Billy looked scared, and whined unhappily. "Arooo?" he managed to whimper.
"Wanna be able to talk again?" Matt asked.
"Ruff ruff ruff ruff!" Billy barked, nodding his head.
"Tell you what, Billy," said Matt. "We'll do a trade. Take off your clothes, get totally naked, and as soon as you're on all fours and nude I'll let you speak again."
Billy looked aghast. He stood up and started backing away.
"Hey, it's your choice," said Matt. If you leave now, maybe you'll never get your voice back. "Anyway, you got yourself into this mess. You dared me! Come on man, you lost a bet, time to pay up."
Billy sighed, looked around to see if anyone was looking, and begrudgingly pulled off his tank top.
"Good boy," said Matt. Billy barked. He looked like he was getting used to not having a human voice anymore as he pulled off his gym shorts, revealing his plain white underwear. "Keep going," said Matt. Billy kicked off his big sneakers, revealing equally big feet. He stood there in his underwear, looking embarrassed.
"Totally naked," said Matt. He pointed at the underwear. "Take it off."
Billy whined, "arooooo," one more time. He looked pleadingly at Matt and barked one more time. "Arf!"
"No, dude, you dared me and I won, fair and square. You gotta do what I say," said Matt. Billy looked around again, and pulled down his underwear. His dick was big and soft, his balls hairy. Matt could smell a faint sweaty scent from Billy's crotch. Billy covered his dick with one hands and stood there looking uncomfortable.
"On all fours," Matt reminded him.
Billy rolled his eyes and squatted down on his hands and knees. He barked a few more times -- "woof woof woof! Woof woof back my voice! Ah, okay, I can talk. Okay." He looked up at Matt. "Can I put my clothes on now?"
"If you do, you'll lose your voice again. It's naked and talking or clothed and barking from now on," smirked Matt.
"What? No fair dude!" Billy pouted. "I'm not a slave! I'm your friend!"
"That's true," said Matt. "You're man's best friend now."