Jen watched closely as Audrey took a sip of the drink. Even the caffeine didn't seem to completely wake the girl up, and she set the can down and laid her head in her arms again. There didn't seem to be anything odd about her... Wait...
It was hidden well under the desk, but the front of Audrey's pants were dissolving. She instinctively spread her legs, and if it weren't for her being in a desk at the back of the room, her vagina would've been fully visible to all. That was strange enough, but then Jen heard the sound of about 10 zippers being undone. Every boy in the room had undone his pants' zipper and brought his penis into the open. All different sizes and ethnicities, and as more filed into the room, more boys matched this strange dress code. While Jen had a few seconds to gawk at the length of some of them (Apparently one of the nerds, Jacob, had a particularly impressive 10-incher flaccid. Who knew?), each one suddenly seemed to defy gravity, lifting its head up like a snake. And like that snake being charmed, each curled its now-semi-erect self toward the back of the room - Audrey's desk specifically. Each one now began to lengthen, developing more flesh to force its head closer to its target. Once the bell rang, every penis in the room (and two tongues, from the mouths of Liz and Sarah, whom Jen knew were lesbian and bisexual, respectively) was stretched to a taut rope, one end connected to its owner's crotch (or throat), and the other inserted into the very stretched pussy of the still-sleeping Audrey.