"Hah, okay," Nikki snorted. "But no monkey business. Don't try to punk me with something like changing your hair color, for all I know you used some special dye or something. It's gotta be something unfakeable."
"So demanding," Jessica snickered, then paused. "'Monkey business', huh? That gives me an idea..."
Nikki crossed her arms and pretended not to care as Jessica typed away, clicking on various options on the screen. Finally, Jessica seemed to complete her efforts and stood up.
"Okay, watch carefully!" Jessica grinned, then clicked on something before quickly reaching for her waistband.
"Watch what?" Nikki rolled her eyes. "Your butt?"
"Just watch!" Jessica's face scrunched up with a weird expression. Nikki was about to make a snide comment about constipation when the skin a bit above Jessica's butt crack began to distort. No, not just distort, stretch. And keep stretching. In fact, it didn't stop until there was a long rope of flesh about four feet long. Then, suddenly, a layer of short black hair matching that on Jessica's head sprouted all over the rope. Finally, it began to lift in the air, curl, and sway side to side.
"Hahaha!! Like my new tail?" Jessica laughed in delight as she practiced moving her tail into various positions in front of a stunned Nikki.
"It must be...some kind of trick..." Nikki stammered, eyes wide. "Like, remote controlled..."
"What, you're still doubting?!" Jessica's jaw dropped, then she poked a stunned Nikki in the forehead with the tip of her tail. "Fine, then I guess I have to do something you can't explain away!"
Before Nikki could come to her senses, Jessica had entered something else into the Chronivac and turned to her, smirking.
"Wait, what are you..." Nikki started to ask before feeling a strange twinge at the bottom of her spine, then a slightly cramped feeling in her pants. "You didn't...?!"
"Since you think my tail is fake, how do you explain your own?" Jessica laughed.