Tries to struggle one last time, but is tripped when her panties are pulled down

Katie made one last ditch effort to keep her only piece of clothing. She mustered as much energy as she could at this point and takes a few steps away from the girls. However, her effort was for naught, as she suddenly felt hands at her hips, followed by the feeling on someone tugging her panties down. As her last article of clothing reached her ankles, she tripped and fell face-first onto the hard wood floor with a loud "SMACK!"

"What's going on over there?!" the female coach yelled, hearing the commotion and seeing a girl on the ground.

"Katie's panties fell down!" Samantha called back.

The female coach marched over to Katie, who was tying to stand up, but fell over due to her hobbled feet.

"I see. I guess your ass is just too big even for your underwear to handle. They're probably no use to you now, so just take them off." the woman ordered.

"But..." Katie tried to explain.

"No 'buts' young lady! Take them off or I'll take them off!"

Katie reluctantly pulled her embarrassing panties over her shoes and handed them to the coach, who balled it up in her fist.

"Alright, now get back to running. You're obstructing the track for the other girls." the woman instructed.

Samantha and the other girls pulled Katie back to her feet and gave her now bare butt a small slap to get her moving. Katie blushed crimson at having to run around naked (literally). She covered her body as best she could and jogged. The other girls whispering and giggling behind her. Katie hoped her ordeal would end soon.