During the class

Emily entered the women's changing room to find the other girls in various stages of undress; some had only taken their shirts off and some were already down to their underwear. The only exception to this was Rebecca, who sat pretending to untie her shoelaces with her gaze fixed solely on Emily. She gulped and retreated to the relative safety of her own locker.

"Hey Ems." Her friend, Amy, greeted her. The redhead was down to her underwear and was retrieving her white PE shirt from the locker next to Emily's.

Emily watched in horror as, smirking, Rebecca got to her feet and began to walk towards her. It was at that moment that the female PE teacher barged into the room.

"Oh good," the teacher said. "Rebecca, can you come with me please?"

Rebecca stood frozen like a deer in the headlights. Whatever she'd been planning she obviously feared she'd just been caught. "Why?" she asked.

"I need somebody to help set up the volleyball nets," the teacher replied irritably. "And since you're the only one who isn't undressed yet I'm choosing you. You'll also be the assistant referee for today's session. Now stop asking questions and come with me."

Emily breathed a sigh of relief as Rebecca left the room and headed towards the gym. With the immediate threat to her modesty eliminated Emily let her guard down and, without thinking about the consequences, lifted her t-shirt up and over her head. It was only when she heard Amy gasp that she realised what she'd just done.

"Is that all you were wearing?" Amy whispered.

Blushing furiously, Emily glanced around the room. None of the other girls were paying her any particular attention. Being naked in the changing room wasn't that unusual, of course, but if anyone had seen she'd only been wearing the t-shirt they'd probably be pointing at her and whispering or something. Placing the t-shirt in the locker she retrieved her white PE shirt and threw it over her head.

"Please don't tell anyone." Emily whispered back.

"Why were you half naked?"

"It's just... it's a weird story. I'll tell you at lunch."

Just then a gentle breeze - whether from one of the windows placed high-up in the wall or from the air conditioning, Emily didn't know - blew across her. Her pussy still felt quite wet and she feared how that might show up against her gym shorts. She closed her locker with them still inside and locked it.

"I'm just going to the toilet." Emily told her friend.

The toilets were connected to the locker room but were contained within their own separate room. Emily pushed open one of the half-closed cubicle doors and stepped inside. She quickly tore off some sheets of toilet paper and set about drying her crotch, including some of her inner thigh where the lady juices had trickled.

Once she was satisfied that she was dry again, she pulled her t-shirt down for modesty. Unlike her other t-shirt, which had been quite loose at the bottom, her PE shirt was a lot tighter and hugged her hips almost like a mini-dress. Still, it was only for the short walk back to her locker, then she'd have her shorts on again. Wearing just her street shoes, her socks, and her white PE shirt, Emily returned to the locker room. By now the rest of the class were dressed in their gym uniforms and the teacher was standing by the doorway expectantly.

"Oh good, you're all ready then." she said.

"Act-" Emily managed before Amy shouted over her "Yep teach! Good to go!"

"Come on then." the teacher said, and walked out into the gym. The rest of the girls followed. Emily made to move towards her locker but was blocked by Amy, who grabbed her arm and began to drag her away.

"Wait, my shorts-" Emily hissed.

"I saw how wet you were." Amy whispered back. Her grip was like iron as she led Emily towards the door. "Plus you could have taken your shorts into the bathroom with you. You obviously want to do this."

"I really don't!" Emily whispered.

"How about this, then?" Amy asked. Still keeping her grip on Emily's arm, she used her free hand to grab the waistband of her own shorts and stretched them out. Emily's gaze lowered instinctively. She was given a view of her friend's panties. But Amy wasn't wearing them. Instead they sat bunched up between the inside of her shorts and against her thick red pubic hair. Amy eased the waistband back into place. "When we're both sitting on the bench together, I can take these out and hand them to you... if you want them."

"You want me to put your panties on in the gym?!" Emily asked. "I might be seen!"

"Don't pretend that doesn't make you horny." Amy said.