How about a simple "thank you" when you do something for somebody? Or even a "hello" in response to a "hello." I can't tell you how many times I've been out hiking and pass some whore on the trail and reflexively say "hello" just to have them pretend they didn't hear me. They won't even look at you, and it's 95% whores that do it. When it happens I turn to my friend and loudly say, "fuck you, too, Bill!" I'm betting cash they're bitter feminist cunts, angry at the world.