Picked this room in the library. Was standing in the long corridor behind the long book case on the right. I unzipped my jeans, put my hands down my pants and toyed with my clit till I came. When I did my eyes closed and I curled over into the book someone had left out that I was pretending I was reading (some memoir by Einstein). When I opened my eyes a young thin guy was standing about 6 feet away on the opposite side of the book case looking at me. I smiled zipped up my pants and walked out soaking, horny, and buzzed.