With Jen in hand, Erika went back into the girls' bathroom and ducked into the same stall, where she found her skirt and panties still on the floor where they had been dropped. She picked them up and hung them on the small hook on the inside of the stall door, then sat down on the toilet. "Alright, Jen... like, let's start by getting you nice and hard, shall we?" Erika grasped Jen's quivering shaft loosely in one hand. Slowly at first, then progressively faster, she began moving her hand up and down Jen's body, gently stroking her sensitive skin.
"Oooh," moaned the Jen-penis in pleasure. "Jen feel good..." With less than half a minute of rubbing, Erika soon felt Jen grow plump and rigid. Just as Erika had commanded, Jen slowly lengthened to more than double her soft size, to about nine inches. Erika responded by stopping her hand just below Jen's neck and caressing Jen's cocktip with her thumb. Jen was particularly enjoying this, and let out another soft moan.
"My goodness," said Erika. "Look how big you've gotten, Jen. Like, what shall we do now?"
"Pussy!" entreated Jen. "Jen want Erika pussy! Jen need Erika pussy!"
"No no," Erika scolded. "Not just yet, Jen. I'm not through playing yet." Jen let out a faint desperate whimper, but Erika paid no mind-- instead, she held up Jen closer to her face, clutching the base of her friend's penis firmly, and began running her warm tongue up the underside of Jen's shaft. For Jen, the pleasure was so intense, she felt like she would explode in orgasmic euphoria. Then, suddenly, Jen was in the dark.
Jen called out. "Erika? Where Erika go? It dark..." There was no answer, save for another stroke from Erika's tongue, followed by a pulsing pressure which made Jen feel even more enraptured. That was when she understood. Erika had slid her into her mouth.
Erika sucked on Jen for several seconds, until finally she gagged and pulled her out. "Like, how was that for you, Jen? Did you like that?"
"Jen like Erika tongue... but... Jen need Erika pussy now..."
"Okay, okay," Erika capitulated. "I guess you've waited long enough." Finally Erika spread her legs and lowered Jen between them. At long last, she pushed Jen into her glistening slit, moving the penis in and out briefly before shoving her up as far as she would go. For both Jen and Erika, the feeling was more amazing than either had anticipated. Jen could no longer hold in her load. Before she could really understand what was happening, Jen burst forth with a stream of cum. As the cum rushed into her, Erika instantly convulsed into the most immensely satisfying orgasm she had ever experienced.
After several moments of heavy breathing and trying to once again regain her composure, Erika finally drew Jen out of her and wiped the excess cum and fluids off with a sheet of toilet paper. "Wow," Erika panted, "I... I never imagined it was, like... possible to feel that good." Jen, momentarily sated and still dribbling cum, said nothing. Erika set her friend down on top of the toilet paper dispenser and put on her panties and skirt. It was only then that Erika realized the rest of her clothes were conspicuously absent. "Crap... my bra and shirt are gone. They vanished when you turned me into a pair of legs. I can't go walking around school topless..." She thought for a moment, looking down once more at Jen. That was when it hit her. "Hmm...," Erika smirked. "Like, I think I've got an idea, Jen..."