Once when I stayed in a hotel, I woke up in the morning as usual dressed only in a pair of silky, green, ladies knickers. Extra big to give a generous room for my penis that had the tendency to get stiff quite often in those days because I had not been shooting for a couple of weeks. I did some morning gymnastics and this was enough to give me a real hard on. Just by curiosity I opened a door that I had not seen the night before. There was a full glass behind and..... there was a young woman just starting to move in the bed in the other room. My first impulse was to quickly close the door but then it went through my mind that it was a one-way mirror and that the manager used to put the most sexy girls in that other room and then having a good time to watch them. Perfect indeed to be behind a mirror where these women used the mirror on the other side to dress and undress and do whatever. So I decided to leave the door open and enjoy what ever I should be able to see. My hard on was very excited and stood magnificently straight out inside the knickers and giving a dot of precum at the top showing through the thin fabric.
I did not need to wait long before the beautiful creature in the room went out of bed, dressed only in a short baby doll pyjamas with no panties. She started to dance around the room probably to some music that I could not hear and now and then coming up in front of the mirror and I got a feeling that she was looking strait at me but, of course, she just saw herself in the mirror. I could not help to back a little at first but then I stayed just in front of the glass and getting very horny of what I saw I started to stroke my cock slowly from outside my silky outfit. What a morning!!