Where I work, there is a group of men that discuss in detail the physical appearance of new female employees when they think nobody is overhearing them. They discuss individual body parts and then rank overall on a scale of 1-10.
Did you confront them on it - let them know on a scale of 1-10 how shallow, inconsiderate & loud they were?
No, I tend not to get bothered by that kind of stuff. I'm friends with them now; we drink beers and watch movies together sometimes.
I had a detached kind of shock to it, rather than personal anger. Like, "I can't believe they're talking about me like that." Followed by the awkward issue of knowing which two co-workers think my breasts are too small, which two think they're okay, among various other positive, negative, and neutral descriptions of my body, and the various numerical ratings each one has assigned to me.
There was one time, like a year later, I forget the exact context, but I think one guy said this one actress is hot, and I sort of casually said, "Better than an X.Y?" referring to the exact number he gave me. He kind of thought for a second and then got an, "oh crap" look on his face. Funny stuff that was.