Vibrations make it hard to concentrate

Once I got to uni I couldn't wait. I went into the toilets and put in an aluminium butt plug in (with lots and lots of sliquid lube). It's only small and glided straight in. I let out a small moan as I couldn't help myself. I then proceeded to take a picture for T and admired the red crystal showing between my cheeks. I sat down in the lecture theatre with a full feeling and thought of how much fun I'd be having later. I struggled to concentrate for 2 hours and hoped I wouldn't get the seat wet. Eventually it was time for our break and I went back to the bathroom. This time I took out the metal plug and replaced it with a much larger silicone vibrating plug. I was shaking with excitement by the time it was all the way in, I can barely take much more of this, I thought. I turned it on, It felt sooo good. I felt so naughty and even though you couldn't hear it I was still nervous. When I sat back down the vibrations changed as the button was pushed. Shit I thought... someone might feel or hear the rapidly changing vibrations. But thankfully no one looked my way. I managed to keep a straight face and grew more and more impatient.

Finally class was over and I rushed to where T would meet me. He greeted me and then felt my plug beneath my skirt. He then took me into the cubicle, lifted up my skirt and started fingering me.. oh god it felt good. I was so wet and slippery from thinking about him all day. I put my hands against the wall to steady me and he took out my plug, replacing it with his huge cock. I rubbed my clit while he fucked my arsehole hard. I got so close to cumming and could feel myself tightening when he pulled out and started to finger me while touching himself. He sat on the toilet seat and I guided myself over his dick, this time in my vagina. Using my leg strength I lifted up and down until I could tell he was close. I got up and bent over in front of him, showing him my slippery arse while putting the plug back in. I started playing with the plug and rubbing my clit and I could here his breathing pick up. Finally I was ready to come. I pushed out and held my plug to keep it inside while I gushed squirt all over his lap and the floor,turning around just in time to catch his warm cum in my mouth. Satisfied, we cleaned up and headed back to the car.