Jen watched as the effects of the pill took effect for the second time on Claire.
Claire's hippo mouth began to grow to absurd proportions, growing until it took up almost all of her torso! Jen watched as it's brown-grey skin began to crack, becoming scaly, a layer of wispy, dark feathers covering the top half of her now massive maw.
Jen also saw the internals of her mouth change, the teeth inside her mouth shrinking as what seemed like hundreds of dagger-like teeth as long as her hand grew in around the edges.
Claire's maw continued to increase in size, eventually filling her entire torso in its glory. It grew out almost 5 feet from Claire's body, pushing her back from the table. Eyes appeared on the sides, a dazzling, enchantingly bright shade of yellow. They looked around, focusing and unfocusing as they darted to and fro. Soon, the changes to Claire were complete as her new maw completed its growth.
Jen looked on at her friend in awe. Taking up her whole torso, from just below her shoulders all the way to between her legs rested the enormous head of a Tyrannosaurus Rex! It was covered in a mix of dark, almost black scales and wispy, black, hair-like feathers, and was so large that it caused her to have to lean somewhat far back just to sit down! It covered literally her entire torso, stretching wider than her rib cage and from just below her shoulderblades all the way to slightly below her groin. The most obvious part was the mouth: a huge, gaping maw, filled with razor-sharp teeth and a huge tongue. In addition, her new pair of eyes stood out brilliantly with their bright-yellow colour, the pupils strikingly visible. Jen could feel her friend's breath exit from the massive nostrils of her new mouth, creating a strong, warm breeze. She also noticed that her labmate was now shirtless, and it dawned on her that there'd be no way for her to hide her massive T-Rex head, nor did she have any breasts to keep covered from the prying teenage eye.
Just as she realized this, Jen's awe-inspired stupor was broken by Claire, as she saw Jen staring at her with her new eyes even while her human head was focused on the board ahead.
"Jen, what's up? Why are you staring at me, you know I've been saddled with this massive mouth for my entire life, are you even paying attention to the lesson?"
Jen shook herself out, apologized, and turned to focus on the lesson ahead for the last few minutes of class as Claire pulled out a raw leg from a cow. She leaned back even further to open her mouth, looking at the ceiling as she hefted the huge leg into her gaping mouth, downing the leg with a sickening crunch.