#162993 - I would sit there in my classes with my nipples hard and erect because I was thinking such dirty thoughts, and when I was lucky enough to be given a hall pass to go to the toilet during lessons, I would cherish the opportunity to sit alone in the girls toilet with the loo seat down - myself perched on top - my knickers around my ankles as I rubbed at my excited pussy. Back when I was still at secondary school I’d sit there in my classes and my mind would wander to filth. I’d undone a few buttons on my school shirt so that I could get to my nipples, pulling and toying with them, only recently had I noticed the became stiff, erect and sensitive in the cold and damp - and when I pinched them between my fingers.