Closing her eyes and tilting her head back Rebecca allowed the warm water to wash over her body, rinsing away the mud and relaxing her aching muscles. She had forgotten her hockey boots and Mrs Holden the games teacher had made her and another girl run laps of the field after the lesson. She knew she was going to be late for her after school session with Jack and he would be angry but, right now, she just didn't care.
Suddenly, Rebecca got the feeling she was being watched and opening her eyes, she saw the other girl who had been running laps with her, Beth, watching her shower for the changing area. Rebecca had never really talked to Beth. She was quite shy and generally didn't say much, the kind of girl you didn't really notice. Looking at her now, still wearing her white P.E. shirt and navy pleated skirt, Rebecca could appreciate just how pretty Beth actually was. Although they were both the same age, both 18, Beth was a little taller than herself, around 5'7", with bigger breasts, about a D cup Rebecca thought, shoulder length dark hair and long legs. Beth noticed Rebecca looking at her and blushed and looked away.
Rebecca went back to showering, her mind drifting, and thinking about Jack and what he was going to do to her this week. It had 3 weeks since her teacher had taken her virginity and, at first, Rebecca had been scared of being alone with him, scared about what he'd do next. But, as the weeks went by and Jack did not make a move, Rebecca realised she actually wanted him to. She wanted him to use her again, she wanted to suck his cock and have him thrust hard inside her. Thinking about Jack gave Rebecca a familiar feeling in her pussy. Her right hand moved to her right nipple and began pinching the hardening flesh. Her left hand moved slowly down her body and towards her swollen pussy. Opening her eyes, she saw Beth watching her again, but instead of feeling ashamed, the though of being watched just turned her on even more. Keeping eye contact with the other girl she slowly inched her left hand down further and further until it reached her clit. Rebecca gasped as her fingers grazed the extra sensitive area, and still staring straight at Beth she pushed two fingers inside and began fucking herself with her fingers, her other hand still on her nipple.
Her eyes gave a silent invitation to the other girl to come and join her. Beth walked into the showers, her gaze sweeping over Rebecca's young body, wet from the shower, and watched her fingers moving in and out of her shaved pussy. Beth was still wearing her sports kit and as she entered the showering area the steaming water soaked her t-shirt through and she did not seem to be wearing a bra, making it easy for Rebecca to see her big, hard, dark nipples poking through the material, and she ached to suck on them. The two girls stood inches from each other, Rebecca's big blue eyes looking straight into Beth's deep brown ones. Their eyes closed as the girl's moved closer and their mouths met. Rebecca had never kissed another girl before. It was so soft and gentle, yet more sensual than kissing a man. Their tongues found each other as their hands did the same. Beth's hands were on Rebecca's arse, kneading the flesh and Rebecca brought her hands up under Beth's soaking wet skirt to do the same when a loud voice made them stop;
"What on earth is going on here?!"
It was Jack. The girls sprung apart. The teacher looked and sounded very angry, but the bulge in his pants made Rebecca wonder just how long he'd been stood there before he said anything.
"Oh sir... we just... I just...." Stammered Beth...
"Silence you! Rebecca, you were supposed to be in my classroom 20 minutes ago, and when I come to get you THIS is what I find?! Come with me, both of you. Now!"
The girls began to walk over to their dry clothes but Jack stopped them...
"Now girls! This way."
He led them cold and wet through into the nurses' office and shut the door behind them, locking it and putting the key in his pocket.
"Now Rebecca, I knew you were a slut but I'm shocked at you Beth..." His voice was no longer angry, now it was mocking. Beth blushed but said nothing.
"Now, I must think of a suitable punishment for the both of you... Beth, climb up onto the table" He said, gesturing towards the short, padded, medical examining table at the side of the room. Beth climbed up and laid down. He walked over to a cupboard marked Lost Property and took out a handful of school ties.
"Rebecca, get up there and tie her down. Hands and feet."
