Jessica is not who she appears to be

Jessica flicks her golden blonde hair over her shoulders as she shrugs noncommittally. Her big blue eyes sparkle as they gaze at you and she walks slowly towards you. She looks up at you and pouts cutely.

"I don't know David, am I Jessica? I sure look like Jessica and I'm doing exactly what Jessica would be doing right now so am I not Jessica?"

She presses her lips against yours and kisses you tenderly. It feels just like Jessica, down to the minutia of how she kisses. Your mind is buzzing, you can't figure out if it actually is your girlfriend in body and spirit or if someone has cooped her form using these apparently miraculous pens. As she holds onto you tightly, your mind starts to blank - the whole situation being too much for you to handle and for the first time ever, you pass out.

******

When you wake, you're lying in Jessica's bed as she strokes your head gently. Your head is throbbing - you obviously bumped it against something when you fainted and Jessica dragged you into the bed to recover.

"Gosh David," Jessica snorts uncharacteristically, "If I'd known you'd faint, I wouldn't have toyed with you so much. You're such a wuss."

That tone sounds familiar. It sounds just like...

"Trish!"

"Bingoooo," Jessica replies in a sing song voice, one that sounds just like Jessica but with Trish's mannerisms, "Blarghhh you had no idea it was me." Trish contorts Jessica's face into a grotesque caricature of itself as she continues to pat you like a pet.

"What on earth are you doing!? That's my girlfriend you're wearing!!"

"Yeah duh, that's what the pens are for. I only got here like an hour before you. After someone dropped off the pens at my place I thought I'd try it on a fellow female and Jessica was the closest. Besides, don't worry - I kinda asked her for permission before I zapped her."

"Kinda?"

"Ummm, by kinda I mean I told her about the pens and said it'd be cool to play a prank on you? She didn't exactly say no..."

You frown and shake your head. This was classic Trish, always shooting first and asking for forgiveness later.

"So do you think you can get outta Jess now? I kinda came over here so we could try the pens ourselves."

"Oooo fun times eh? Alright lover boy, I'll give you Jess back."

You watch closely as Trish-in-Jessica climbs up and strips out of all her clothes and dumps them on the floor. Jessica would not be happy - she liked to keep everything neat and tidy. A look of concentration crosses Trish's face and she pulls at the back of her head. She sweeps her hair forward and bends over as she pulls at her skin. It stretches like elastic, the hair coming with it as you see another head come out of a slit on the back of Jessica's head.

"Ahhh, feels good to hear my own voice again," says Trish as she drops Jessica's deflated skin onto her breasts. Using her borrowed fingers, she continues to pull at her neck and she turns around so that you can see the slit extend its way down her neck and all the way to her buttocks. As the slit opens up, you can see Trish's much more tanned skin inside and she maneuvers her way out of the tight skin that is Jessica's. When she's done, she tosses it at you and pulls out her bag, which she had hidden in Jess's closet and starts putting on her own clothes.

"Just zap her skin with the black pen and she'll change back in no time."

You do as she suggests and before long the Jessica skin reinflates into a complete Jessica once more. As Jessica climbs up groggily, you drape the blankets over her naked form.

"Oh my God Trish, you did it didn't you?" asks Jessica after she notices her nudity. She pouts with annoyance at her friend, "So how was it?"

"David didn't have a clue," Trish replies happily, "And he's a great kisser!"

"Oi!" Jessica's face wrinkles up as she chastises her friend but she can't hide her glee at the fact that the pens worked.

"So what's the plan?" you ask, "Shall we go out and try the pens out or just keep it between us for now"