As it turns out, I must respond with a yes to this question. You see, I was in a hotel room and had a lot of time t kill before a meeting, so naturally, I sat in front of my computer and started to surf the web while masturbating. I was completely naked too. The door was locked so I was completely absorbed into my hard cock and the sexy stuff on the computer. Eventually, housecleaning came to the door and knocked. I ignored it because I was deep into my masturbating and the door was locked. Well, it turns out that the housecleaning pass key will still open the door. The lady came in and I turned toward her, still stroking my hard cock, never stopped. She asked if I needed anything, I responded with "no" and she left. What was interesting to me was that I never stopped and did not loose my hard on. In fact, if anything, I got close to orgasm while she was there. All this convinced me that I actually liked the exposure. Since that episode, I have had a few other opportunities to re-enact the same scenario. And to my good luck, it has happened again. Once again, a lady came in and saw me masturbating and I truly enjoyed the exposure. So, Yes, I do enjoy being seen, I just did not know it until these events.