Something to wear, nowhere to change

Sandry pulled her PE kit from her locker, the bag half-unzipped to reveal a pair of dark blue shorts and a white t-shirt.

"Aha!"

"Great, put them on and let's go."

"Erm..." Sandry looked around her. The girls changing room was several corridors away in the wrong direction. There was a toilet near her, but with an Out Of Order sign stuck on the door. "I need somewhere to change."

Robyn looked around, then sighed.

"Just change here."

"In the corridor?"

"Listen, the whole class just saw your tits, and you've already split your trousers and flashed your pants, there's nothing more to hide."

"I suppose so, but stand in front of me."

"Sure, my skinny arse is the perfect way to keep you hidden."

"Just do it!"

"Hurry up!"

Robyn stood directly in front of Sandry, trying to hide as much as she could from students heading to their next lessons. Sandry dropped her bag to the floor, then stepped out of her shoes, removed the tie which she had improbably kept on despite a lack of a blouse, then unfastened and dropped her ruined trousers, leaving her in just her Hufflepuff knickers.

Robyn had been keeping watch, trying to look in every direction, but as luck would have it she spent too long looking to the right, enough time for a younger boy carrying a camera to approach from the left.

The flash of the camera alerted both girls, and they turned in time to see several more flashes.

"Great page three for the school newspaper! Thanks, girls!" the boy smiled, before turning and disappearing around the corner.

"I've got to get that photo back!" Sandry explained, following the boy while forgetting somehow she was wearing nothing but knickers and socks.