I learned the answer to this one and will say it as Many women are just too polite to post it.
"Because your (the man's) actions show you have no clue that you are creating an intrusive and discomforting feeling in me - a sense of being violated- Violation can be very subtle as well as overt.
I am a male. If I have not answered "on point" please correct me on thread or in PM.
The above only works if you assume that someone who "understands" you will never make you uncomfortable.