Before the school broke up for Summer I was helping my history teacher (Who is about 26 and TOTALLY FIT) clear out his old room as he was having a new one after Summer break. In my school we have uniform so I was wearing a short skirt, knee length black socks, black heels, my shirt tucked in and unbuttoned slightly and I have EEs so my cleavage was prominant. (I was 17 at the time)

Anyways we were clearing out one of his book shelves and as I tried to reach up to grab a book I felt a draft on my ass and realised my skirt had lifted up and exposed my bare ass (I was wearing a G string) My teacher saw me struggle and came up directly behind me, placed one hand on my hip and reached up over me for the file, but as he did so I felt that he had a boner that he was pressing against my ass. I instantly got a little horny. My fit history teacher had a boner and he'd just rubbed it against my almost bare ass. Of course I would. Saying thanks I carried on with my work and could feel him glance at me every once in a while. I was soon on the bottom shelf and bent down, realising my skirt had risen again but this time I didn't care. I knew he was half horny already and I was in a flirty, teasing mood because I'd fancied him all school year. As I was bending down I felt one of his big hands on my hip again and he reached up to grab something on a shelf above me. Once again his boner rubbed against me, but this time only through my panties (which now had a wet patch) and it had accidently brushed my already swollen clit. I supressed my urge to moan and waited until he'd moved to stand back up again.

We had soon finished the bookshelf and he asked me to help him clear a few shelves in his cupboard at the back of the classroom. I agreed and once we were both inside he shut the door behind us because it was now lunch time and the halls were noisy. We started putting things into boxes when I found a box file so I opened it to see what was in it. He tried to stop me but it was too late and I'd seen his porn mag stash. He looked embarrassed but I found it kinky and took one out to look through. He asked me what I was doing but I ignored him and sat on a small table that was in the closet (it was quite a big closet and he often sent kids to work in there if they were disrupting the class) He tried taking it back but I refused to give it to him. I sneakily glanced to notice his boner was getting harder. I came up with a cruel plan. I spred my legs slightly, just enough to almost see up my skirt and flicked the page on the magazine until I found a page I liked. My teacher remained silent and watched me as I slowly brought my hand to between my legs and rubbed over my now soaking panties once. Sir asked me what I was doing so I stopped and put the magazine down and stood up in front of him.

We kissed and he pulled away saying that he shouldn't have done that but to me the damage was done back when he first rubbed it over my ass and so I kissed him again.

Before i knew it I was on my knees and my history teacher's cock was in my mouth and I was loving it, more importantly, HE was loving it. It wasn't in my mouth for long and he'd thrown every book on the floor to lay me on the desk, rip my panties down and stuck it in.

I wasn't a virgin before him. I'd had sex with my ex boyfriend a lot. But he was literally destroying my pussy. I was moaning "Sir" over and over because even though I knew his first name calling him Sir was hotter. By the time he'd worked his magic I had squirted and covered quite a few history books with my cum. He pulled out and covered my face in his own cum almost as if it was a revenge.

We got dressed and cleaned up and continued to clear the room.

I didn't see him again before the Summer break but when I went back recently he saw me in the corridor and reminded me of an after school detention I don't even have.

I take it we were gonna make a habit of this.