"After all, masculinity implies sexual privacy -- the privilege of moving through life unmolested. Or unnoticed. The most powerful, and to men, mostly invisible, sexual privilege of masculinity is the ability to remain unaware of oneself as a body."
I suppose I never included that in my concept of male privilege, but it seems dead on.
Quote from an interesting (and concise) take on the TSA scanners:
http://prospect.org/cs/articles?article=screening_for_gender