This is very true. I've tried staring back at them and mostly, they look away but encountered a couple that stared back gatal-ly. At that point, I'm ...stuck, don't know what to do already.

Two things I'd like to point out. Firstly, guys don't only stare at girls with revealing clothes. She can be all covered up and the guys can still stare. Can't figure that one out. Second, I do believe that it's not something that a guy can control until he really puts effort and consciously looks away. The problem is when he doesn't when the girl is clearly uncomfortable. Means he's a pervert also?