Rick was trying to figure out what Jim was turning into as he was morphing, but he couldn't possibly have known that Jim was trying to become his sister Rebecca!
"What the fuck, man?" Rick nearly yelled out, seeing his sister standing before him, wearing an incredibly sexy (and maybe even a little slutty) outfit.
Rebecca/Jim smiled. "What do you think?" she asked, doing a little twirl, showing off her body.
"I think you're out of your mind. Why did you want to become my sister?" Rick asked.
Rebecca/Jim walked towards him and put her finger up to Rick's lips, then after taking it away, she kissed him.
Rick pushed his sister's replica away from him and spit in disgust.
"You don't like pretty girls?" asked Rebecca/Jim, sounding rejected.
"Jim, what the hell? That's sick. You're my sister, for godsake."
"No," she said. "Your sister is downstairs."
"You know what I mean," Rick said. "Just ... turn into something else."
Rebecca/Jim could see that Rick was freaked out by this, and that was the reason that Jim decided to become his sister in the first place - to freak him out. But now that he was Rick's sister, he felt like he wanted to stay this way. Could it be that the spell did more than just give people the ability to morph themselves into other things? What if there was a psychological component that Jim hadn't counted on?
"No," Rebecca/Jim said.
"What?"
"I like being like this."
"Jim, you're not thinking straight."
"What's wrong with me being your sister for a while?"
"But you're not my sister. Remember?"
"I wish I was," Rebecca/Jim said.
"What's gotten into you?" Rick asked, getting worried about his friend. It seemed as if the spell had gone wrong in some way. "Just change into something else. You can always change back later."