During one of the first weeks of university there was a power outage caused by a squirrel chewing some wires and getting fried somewhere on the campus electricity grid (seriously that actually happened). My gf and were in the library when the lights went off and everyone was told to leave.

We made our way from the library to one of the academic buildings, neither of us lived on campus and we didn't want to drive home. As we were walking I playfully grabbed her ass a bit and she giggled and started giving me the eye.

We both came to the conclusion that we needed to fuck, like right now. We are checking door handles of each classroom we pass trying to find one left unlocked and finally found a small room in the corner of the bottom floor of the building with about 20 desks or so in it.

We started kissing and grabbing eachother, trying to keep our voices and giggles down to not attract attention. I managed to shimmie her jeans half way down her thighs, giving me enough access to push her on her back and start licking her pussy.

She was already a little wet from anticipation and the general naughtiness of it all made the whole situation all the more sexy. I licked around her clit and occasionally dipped my tongue inside her, getting a good taste of her wetness In no time she was wet as hell and I replaced my tongue with the head of my cock and started thrusting into her as she muffled her moans with the sleeve of her discarded hoodie.

She asked me to take her from behind and I gladly flipped her over onto the desk next to us and continued. We fucked all around that classroom over the course of 15 minutes or so and ended up with my sitting in the lecturer's chair at the front of the room and her riding me facing away so I could watch my cock disappear in her wet pussy.

When I heard her whisper "is daddy gonna cum?" I lost control, grabbed her hips, and dumped my load deep inside her. After we finished catching our breath we quickly cleaned ourselves up and rearranged the room like we found it.

Luckily the university couldn't fix the power outage and had to cancel all the classes that day, otherwise she would have had to sit for hours with my cum leaking out of her while trying to learn about accounting