The female Wii Fit Trainer was on Wuhu Island, running after the racing Shy Guys who were on various different karts, with the Wii Fit Trainer being able to keep up with them as they were running on 50cc. The Wii Fit Trainer managed to go past all the Shy Guys and staying in the front.
"Driving? Pfft! I laugh at driving!" The Wii Fit Trainer exclaimed as she paused, stretching her arms. "All I need to go fast is good diet and exercise!"
However, several of the Shy Guys had stars and mushrooms, speeding through the Wii Fit Trainer and knocking her down. The Wii Fit Trainer growled as she lifted her head up, her eyes full of red hot flames.
"Grrr... how dare they taunt me like such animals!" The Wii Fit Trainer exclaimed as she was flattened by Princess Peach, who was riding in her own pink Birthday Girl.
"Doesn't feel so good running on a Mario Kart track, does it?" Peach cackled as she stuck her tongue out at the flattened Wii Fit Trainer.
The Wii Fit Trainer farted, the deep pitched poot puffing her butt and legs back to normal as she continued farting to get her entire body back in shape. Cracking her neck, the Wii Fit Trainer bent down and let out an enormous fart, using the gas blast to send her forward, sticking her arms out forward. Peach glanced behind her, gasping to see the Wii Fit Trainer closing in on her. She tried shifting away, but the Wii Fit Trainer grabbed the Birthday Girl kart and chucked it off the giant red bridge, sending Peach into the water as she kept on dashing forward, kicking the Shy Guys to the side as she used her flatulence to go faster.
Don't taunt the flatulent Wii Fit Trainer if you value your life.