"Pigs!" yelped ms Tomlin.
A rather voluptuous blonde haired girl named Gina raised her hand. "But Ms. Tomlin, I thought this was supposed to be biology class!"
Ms. Tomlin waved her hand. "That's right Gina! And there's no better way for way us to learn about an animal's biology than to experience it for ourselves. I think we've found our first volunteer class! Gina, please step up to the front of the room."
Gina complied with her teacher's request, though she didn't really know what was about to happen. "Now class, I'll need a male volunteer to join the lovely Gina here for our demonstration." The boys in the classroom sat in silence, no one quite knew what to make of this.
"No takers eh? Well then, I suppose it's up to me. Robbie? Be a good boy and come up here please." Said Ms. Tomlin
A rather chubby boy from the back of the classroom stood up and made his way to the front. He sheepishly gave Gina a smile. Neither of them knew what they were in store for.
"Now," Ms. Tonlin began, "If my two volunteers would just take a swig of this potion, we'll be well on our way in the learning process." Ms. Tomlin produced a vial of pink liquid and handed it to Gina. She took a swift drink from the foul-tasting thing before handing it off to Robbie.
"Now we play the waiting game!" Said Ms. Tomlin.
After a few moments of silence, Gina had had enough. "Ms. Tomlin, are you actually going to be teaching us anything or.." Gina didn't get to finish her thought. She felt a powerful feeling in her stomach that was audible to the classroom. She instinctively put her hands on her stomach, she could feel odd spasms happening throughout her body.
Before she had a chance to follow up, the room was silence by the powerful sound of Robbie breaking wind. He immediately turned beet red. "I-I'm so s-sorry, I don't know w-what came over me." He offered.
"No need to apologize Robbie! Passing gas is quite normal for a pig, its an easy way to get his scent in the air, isn't that right, Gina?"
"Wha?" Gina responded. She was so out of it, Robbie's fart was commanding her attention. Her nostril widened, the aroma surprisingly did not smell bad to her, if anything, it smelled quite good. Within a moment, Gina released her own powerful fart, Robbie turned toward her with increased attention.
"Uuugh, Teacher, what's happening to me?" Gina weakly asked. Her body was beginning to feel bloated.
"I told you quite clearly dearie, this is transformation class and the animal of the day was a pig." Responded Ms. Tomlin.
The class room laughed at the thought of the two hefty students becoming pigs, but Robbie and Gina were too preoccupied with their own shifting bodies to care. Gina doubled over.