She has to trust Kelly.

"Arghhh! Fine!" Isabel screeched while still trying and failing to scratch her irritated bum by simply wiggling beneath Kelly. All she succeeded in doing was shaking her butt at Kelly's friends.

"Fine, what~?" Kelly asked in a teasing tone, enjoying the fun she was having by drawing the process out as long as she could.

Isabel quickly came to terms with the fact that she wouldn't be getting out of her predicament without some level of humiliation. And while both of her options were problematic in their own way, she'd much rather be mocked as the girl whose butt was exposed at the gym, rather than the girl who was practically fingering her ass in public. At the very least Kelly would be the one doing the dirty work with the former option.

"I'll take 'em off!" she shouted as she did her best to quickly slide her panties off. Which became quite difficult given her desperation, as she got stuck a few times. Soon enough however, Isabel was completely bottomless, having flung her panties off her foot, allowing them to fly through the air and smack one of Kelly's friends in the face.

"Now hurry up and fulfill your end of the deal!" Isabel demanded as she did her best to ignore the whistles and laughs at her embarrassing state. She was **** for relief at this point, and didn't stop to think if things could get any worse.