I think most of u guys got it right in your suppositions. U have to handle your sh*t, be smooth.
Personally I'm fine with appreciative looks and feel icky and uncomfortable with perving "Imma gonna eat u up" looks. It also gives me a sense of how smart the guy is. If your smart you'll look in a way that'll not scare em off lol, so that you can keep enjoying the view. I like to step away from a perving gaze as soon as possible. Just don't like how obvious it seems that he has a movie reel in his head.
Now, I'm speaking in a general way cuz I tend to get more booty looks than boobie looks. I don't have much in the way of boobage.
Now that being said, I honestly like the appreciative looks, It took me awhile to get used to but now that I put the work in, I want to enjoy the ego boost.