Her spandex shorts has a large hole ripped in her crotch

(chapter originally by hanskumoekk at writing.com)

Isabel was running on the treadmill turned away the rest of the gym when she felt something cold on the inner side of her thighs as well as her crotch area. While she kept on running, she did spend a few brain cells to figure out what it could be. She tried to think back to if she might have spilt some water on her spandex shorts earlier, but she couldn't remember that happening.

In mid-run, Isabel looked down at her crotch to see what had happened. She let out a very small "eep!" when she saw her own camel toed crotch clad in a thong was peeking right back at her, with her too small spandex shorts ripping at the seams. Not trying to cause a stir in the gym, Isabel kept running while she kept silent, keeping her back turned towards the gym still. If she kept turned this way, no one would notice the hole in the front, she figured.

She took a step off from the treadmill while staying turned the same direction as she was running in. Now standing still took off her headphones, looked down and tried to figure out how to do get back to the locker room unnoticed. She decided to use her headphones to hold over the hole, as it was covering the hole in a decent way. Isabel then turned around to face the rest of the gym while managing to avoid too much extra attention with her headphones.

Across the gym, she eyed the door to the locker room. She had to get there without anyone noticing her predicament, so she could change into her spare clothes. In an attempt to get some momentum on the cover on the front, Isabel slightly bent forward as she held her headphones over her crotch.

She would soon learn that this was a bad idea...