Flannery was feeling the urge to use the bathroom since she had so much ass gas brewing within her that she couldn't stop since she was fanning her roaring rear due to the flames spouting out way more than she expected, with her likely to poop her pants at any moment. "Oh dear... that bowl of chili is really doing something strong to my gut!"
With a bunch of grunts "Ooh damn!" Flannery was quick to rush into the nearby washroom, her flaming farts causing the other gassy girls within the stalls to leave since a huge explosion shook the entire restroom, with the smelly gym leader exiting the entire place fanning herself after a foghorn sound played since she had a clear look of relief on her face for she managed to poop out the solid waste waiting to be unleashed from within her into the toilet with her continuing to pass gas.
"Ahh... much better, but I guess I just can't stop farting!" Flannery laughed upon pinching her nose since she knew that her fanned attempt to disipate the rancid odor wasn't doing all that much. "Guess I need new underwear and pants!"