There is a voyeur fantasy running around my head for some time in which a woman I have just met invites me to watch her masturbate.

The twist about it is that I stay fully clothed and can just watch.

I am not allowed to touch her, I am not allowed to touch myself. I can just watch her having a good time, from as close as I want without making any contact.

My orgasm would be delayed until later when we parted ways.