I was a little bit high at the time, and I probably would have been to nervous to do it otherwise. This was during my first semester as a freshman and I was taking a class in a massive lecture hall with fewer people than I expected. As a result, I sat at a table by myself near the doors. It was fall-ish, and so I was wearing sweatpants and a hoodie that was way too big for me. I recorded my lectures instead of taking notes, so I developed this happy of fucking my arms into my hoodie. My professor was on the younger side and although I didn’t think he was that physically attractive, he had a nice voice. I started off just squeezing my legs together and clenching my muscles, which is a really easy way to get me going. Then I just kind of put two of my fingers against my panties and rocked against them for most of the time, about 5 minutes. When I was getting close, I put my fingers on my clit and grinded roughly against it for about a minute until I started to orgasm. I can be pretty quiet, so nobody even noticed, and when I was done I just left to the bathroom to wash my hands, came back, and sat back down.