Zack decides that he wants to have a life like the cool kids at school, and one of the prominent features of their life's are the relationships that they have.
"I have my hot girlfriend with me in the room right now," Zack says. Immediately, a girl, named Zelda, with long blonde hair, c-cup breasts, and a very thin waist appears in front of him. Zack is immediately jealous, and gets an idea that he thinks would be very fun.
"Zelda and I are currently trading bodies," he says, and he feels a strange transformation come over him as his hips grow, his waist shrinks, and his chest get heavier and heavier as a result of the two new weights.
At this point, Zack decides that he doesn't like this new form and says, "Zelda and I are back to normal."
However, nothing happens. "What could be wrong?" Zack asks.