The first lesson I was teaching that day was history. I was teaching about the United Irishmen in 1798, one of my favourite topics. This class of students were all 18 or 19 so they all had their passes to use and be used and to leave the "SFW" areas of the city (which are still called "SFW" even though the work place is as free-use-friendly as everywhere else).

We are advised not to use the students or let them use us during the school day, but some of the students generally masturbate or use each other while I teach, which is totally fine.

There was one student, Aisling, who fully had her skirt all the way up to show her pussy and was fingering herself very vigorously at the the front of the classroom. Black hair down to her waist, boobs that defied gravity, bright blue eyes and a mischievous grin at all times. I had to raise my voice slightly over the sound of her moaning to be heard by the class. As I walked around the room to hand out the homework, Aisling took her hand out of her pussy and put her finger in my mouth as I paused to hand out the sheets to her row of desks. Technically breaking the rules, it was also breaking the rules that I sucked on her fingers before they left my mouth.

The bell rang then and I quickly remembered the rules and dismissed the class. As the last two students left; a male and female trying to figure out how to walk while having sex, Liz, the new teacher, came back into the room to ask me to show her around the school. I was supposed to do it that morning, but I only had time to get a blowjob from her before we had to get to work.

I told Liz that I will definitely show her around but I was really horny right now and I'd love to fuck her in the ass before showing her around. She was a little surprised that I was ready to go again. I could still see my dried cum in her hair, sticking the strawberry blonde strands together. She hadn't bothered cleaning herself off, which made me even hornier.

She said that I could fuck whichever hole I wanted but she asked if I would go down on her first. I, of course said that would be no problem and sank to my knees, grabbing her jeans on my way down. I pulled them down to her ankles, and then decided to take them off completely. She moved her black thong to the side, sat on my desk and put one leg on it to give me access. I could see neatly trimmed pussy hair surrounding her vulva.

I started by licking the sides of her thighs, feeling her shudder as I did. I then moved in, starting with her pussy lips and slowly reaching further and further inside. The feeling of tasting it as a woman gets wetter is one of the best. I found her clit with my tongue and flicked up and down slowly at first, and as I responded to her rhythm I increased the pace. She put a hand on the back of my head and pushed me further in, fully screaming and lying back on my table as she came while I alternated from her clit to her slit (but focussing on her clit as that elicited the best reaction as far as I could tell).

She moved her hand from my head and I resurfaced. When I stood up in front of her, I grabbed her hips and flipped her over so she was lying face-down on my desk. I took my cock out of my trousers as quickly as I could, and rubbed it along her pussy to cover it in her grool. Then I placed the tip at her ass and pushed. Gently, just enough to elicit a gasp, I pushed further, half an inch, then an inch, then 2 inches. At that point I couldn't wait anymore and I jammed my cock balls-deep up Liz's ass. She squealed in surprise and pleasure and I grunted as I began thrusting hard. I was so horny that it was less than two minutes before I was ready to blow. I came in her ass, doubling over at the release and feeling my cock pulsing against her walls. I pulled out, becoming newly aroused as I watched her ass gripping my cock as it withdrew and some of my cum leaked out. I handed her her jeans, rebuttoned my trousers, and told her to follow me and I'll show her the staffroom and printer. As we left Liz said that her old school allowed free use between staff and students once they were all 18 and that maybe our school should think about a similar policy. That might be one to propose at the next staff meeting I thought...