This day in question I had worked late and gone to get changed in the locker room. It was a hot sticky day and I sat down and sighed and relaxed at th...e end of my shift. All the other girls had gone home and the night shift staff had not arrived yet. I lifted my work sweat shirt above my head and put it in my bag to go home, Next I opened my locker to get the rest of my things out when I heard a noise behind me, I was just in my skirt and bra when I turned round to see one of the lads standing. Now both Kaitlin's and Joel's groans could be heard, as she quickened the pace. Watching her lithe body do squats up and down on the black shaft between her legs, thighs spread, abdominals standing firm and drenched in sweat, gave me a strange sense of pride mixed with a small amount of jealousy and anxiety. They were both obviously enjoying themselves and by the increasing noises coming from Joel it was clear that he couldn't hold on much longer. Kaitlin slowed and rotated round to face her. I moved slowly, long slow strokes all the way in and right out until she said “stop teasing me, do it properly, fuck me, I need it NOW”. That did it for me, I was ready to fuck her hard, only holding back to make it good for her. I slammed into her hard causing her tits to shake; in and out like a piston, long hard strokes causing her to cry out with pleasure “oh yes, do it, yes, harder, oh fuck I’m cumming, keep going, don’t stop aahhh yes”, her hips drove up against me as she came and I kept. I don't ever want it to stop. I don't ever want you to take that beautiful cock out of me. I want your cock in me always. Always."She thought she was going to black out, but she didn't. He let her fall back so that her back was on the ground now. His cock was still deep inside her, and he was still hard. He was still in between her legs and he was still sliding his cock in and out of her. On every inward stroke she shuddered.There was no telling now how long he could stay hard. She hoped that.