I am a 19 year old community college student, 5' 2" 135lbs dark brown hair 36F. I flunked a test and went to my professors office to see what I could do to improve my grade. He is normally pretty cool, an older guy but not too bad looking and always nice to me. I leaned over the desk and noticed that he was staring at my breasts and just sort of smiled and let him look. We were going over the test problem by problem and I noticed that the desk was moving a bit and then he started grunting. I asked him if anything was wrong and he smiled and said no, he was just leaning over to help me and must have banged his knee and it hurt. I said that I would simply move to his side of the desk and he started to say no but I was already there. He had his cock out and it was huge and hard! He blushed and stammered but asked if I minded if he jerked off while looking at me. I was actually kind of flattered. He told me that if I took off my top he'd give me an "A" on the exam so I did. I let him cum all over my breasts. It was embarrassing but also kind of exciting.