Karyn turned to Jon. "Hey, we can have a bit of fun with this"
"What do you mean"
Karyn grabbed the rock. "I wish that me and Jon could produce any body part that we wanted from this drawer just by thinking about it and it would attach and de-attach in the same way. Only me and Jon could attach and remove these parts."
"Let's take turns," said Jon, "Me first."
Jon reached into the drawer and got out a hairy chest. He attached it to Karyn. Karyn looked down at her chest, and opened her shirt. "Wow," she said, "This is too weird." She stroked her new chest hair.
Jon looked at Karyn. "Your turn" he said.
Karyn reached into the drawer and pulled out a pair of ladies legs, very long and smooth. She attached them to Jon, and they replaced the ones Jon had previously. Jon took off his trousers and started at the smooth, silky legs. His toenails were painted bright red.
"Shit!" said Jon, "That is a-fucking-mazing" Jon sat down and crossed and uncrossed his new legs. Karyn noticed that he was getting a hard-on under his boxers.
"Hey, don't enjoy it too much!" protested Karyn, taking off her chest.
Jon stood up. "Let's see how you like a hard-on." He reached into the drawer and took out a large penis, erect. He fixed it to Karyn. "Don't YOU enjoy it too much," he chuckled.
Karyn took off Jon's legs and replaced them in the drawer. "Okay then, if you think that's funny..." she reached into the drawer and pulled out a head. Jon recognised it immediately. It was the head of Miss Taylor, the twenty-something schoolteacher Jon had a crush on. Jon was expecting Karyn to put in on his head, but instead, she placed it over her own. Suddenly her features changed into those of the teacher.
"Hey, Jonny," she said, her voice also becoming that of the teacher. "Why don't you show me what you're made of?" She began stroking Jon's leg. Jon's erection suddenly got a lot bigger. "Oh!" said Karyn in mock surprise. "We can't have that" Suddenly, Karyn reached into the drawer and got something out, attaching it to Jon's groin before he could react.
Jon reached down - his erection was gone, and in place was a large vagina. Jon wanted to take it off, but he had never seen one before. He pulled his pants down and looked at it. It looked back at him. He began to stroke it. Suddenly, he had a very odd idea. He grabbed the stone.
"I wish that Karyn wanted to have sex with me!" Suddenly, Karyn was all over him, still wearing the mask of Miss Taylor, her penis standing proud and erect. Jon needed no second prompting, and suddenly they were naked on the bed, Karyn's penis penetrating Jon.
Jon and Karyn were one for what seemed an eternity, but eventually Karyn came and Jon exploded into orgasm. They lay there on the bed, realising what they had done. Jon had to rectify this. He grabbed the stone, but Karyn had got it first.
"I'll teach you a lesson" she said, taking off the mask. She reached into the drawer and took out another mask - this time it was Jon's father. She put it on, her feminine figure looking very odd beneath his head. "I wish you wanted to kiss me."
Jon felt revulsed, but he couldn't resist the stone. He kissed his father on the lips, his tongue going down his throat. Jon felt physically sick, but couldn't stop. Eventually, he managed to force his mouth away from his fathers and grab the rock. "You bitch!" he shouted. "I'll get you. I wish..."
