"Come on, Bubble Butt! Go faster!" Elizabeth teased as she walked behind Jen, once again filming her massive posterior. "God, she's so hot," she thought to herself, watching Jen's mammoth ass shake with each step.
"I'm going as fast as I can!" Jen protested, which was true. The weight of her rear really slowed her down, making walking a pain and running impossible. To make this point clear, she tried jogging a little, only to have her vigorously shaking ass pull her pants down.
"Looks like Bubble Butt pantsed herself!" a passing student laughed as Jen frantically tried pulling her pitiful pants over her ass. Elizabeth decided to help, putting her hands all the way down Jen's pants and pulling up. Jen blushed and jumped, feeling her friend's cold arms press into her soft rear. "S-stop that!" she stammered. Elizabeth, however, was in internal ecstasy at feeling her entire forearm sink into Jen's ass, stuck between it and her ill-fitting pants. Eventually, after some shaking (and jeers from other passerbys), her pants were back up as far as she could get them. Jen wasn't one to complain - as little as she wanted to admit, especially to Elizabeth, she was beginning to enjoy this, being Elizabeth's living butt toy. She was in no way going to thank her for putting her arms down her pants, however.
"Hey, Bubbles, I have an idea," Elizabeth whispered into Jen's ear as she pulled her arms out of Jen's pants, wrapping them instead around her neck to tease Jen's chest – and also to press into Jen's mammoth rear, which stuck out quite far from her back. "What if we went to the mall?"
"And miss chemistry?" Jen sarcastically groaned, loathing that class with all of her heart, especially her obnoxious tablemates.
"I guess so," Elizabeth said, pulling her arms back and giving Jen's ass a hefty smack. This sent Jen blushing even harder, giddy at the idea of being Elizabeth's transformative toy at a place as full of wonder, surprises, and, most importantly, clothes as the mall. With that, the two went as fast as possible to the restroom, waiting for the bell to ring. As they waited, Elizabeth continued to play with Jen's ass; she squeezed it, pressed it, tapped it, everything.
As soon as the bell rang, they bolted, Jen heaving as her fat ass prevented her from anything faster than a waddle-y jog. Jen remembered that Emily had a truck, and soon the two were in the student parking lot, making a beeline for it.
Elizabeth's truck sat in the parking lot, a rusting piece of metal. It was an inheritance from her grandfather's estate, back from when he farmed out West. The good thing, however, was it had a bench seat - Jen didn't have to worry about getting stuck again. She soon realized, however, that sitting wasn't exactly comfortable - her ass was so fat that her back had no hopes of resting on the seatback, causing her to lean forward. Elizabeth got in on the other side, smacked Jen's exposed ass and giggled. Jen blushed again. She heard the truck lurch, and soon, they were off...