This happened two weeks ago!!
I'm a first year university student and I decided to stay in the dormitory. I decided to do this because I didn't want to move into my own house right away. There are 8 other people in my dormitory and only 3 are girls. All 3 of these girls are good looking, but one of them is better than the other 2. She is asian and very hot.
We have an open door policy so people can freely walk in and out of other's rooms. We had a knocking system where we would knock before entering, but on this particular day I forgot.
Me and my hot asian roommate study the same course so, we are always going to each other asking questions and studying. On this day I needed help anwsering a question and I went to her room. Assuming that she would be working I walked in without knocking. When I opened the door I saw her there lying naked on her bed holding a vibrator.
I stood there in shock. She stopped playing with her self long enough to say, 'Are you just going to stand there or come in?'
I was in heaven! I closed the door and continued to stand there lookin at her beautiful naked body. I now had a huge erection and I saw her looking at it. She then asked me did I like what I was seeing? I merely nodded.
She then motioned for me to come closer. I slowly made my way over and when I was close enough she told me to start licking her pussy. I didnt argue and I started to lick her. After a few minutes of this she started to moan and pushed me aside and her vibrator took over. As she was doing this, I decided to whip out my now pulsing cock and I started to masturbate.
A few moments later my room mate screamed as she orgasmed. After she caught her breath she walked over to the chair I was sitting in and grabbed my cock and started pulling me off. I didnt last long and soon I let out a huge jet of hot white cum all over her breasts.
Afterward we cleaned up and went back to work. Since this occurrence, we have done more than mutual masturbation, if you know what I mean.