Once, during an extended fuck-session with a lady, she asked me what I did "in the meantime" and I admitted that I masturbated. She said that she had always wanted to watch a man masturbate, but that none of the guys before me would do it for her. So, I gave her my best demonstration. I stood naked before the bed and stroked while she lay back and watched, and finger-fucked herself. When I was close to cumming I asked what she wanted me to "do with it" and she held her tits up for me to cum on them. I can honestly say that my orgasm was just as intense as if I had been fucking her and she seemed to cum with the same intensity. I will add that it was the only time I have actually watched a woman masturbating, herself. Most of them are far too shy to demonstrate this to a guy.