Chav is a british term, comes from "Council-Housed And Violent" iirc. Refers to a certain youth subculture.
Problem is Dilmah that a lot of the ones who came to my mind are not actually Chavs, but seem to be under the misapprehension that posessing a set of functioning mammary glands and ovaries acts as a kind of "Get out of work free" card. I'm not saying that all women I meet are like this, indeed, the majority of the girls I know are hard working, intelligent and independent (My girlfriend is one of the greatest examples of this I can think of), but there is a sizeable minority here in the UK who are as Firespawn and I have pointed out, and I expect that it's the same elsewhere.
And I think when you throw away everything the feminist movement worked to give you and act like that, some guys are going to take that as representative of all females everywhere - and there are other personal factors that may lead to them forming that world view.
I should point out that I'm not supporting misogynist view points, they're stupid, ignorant and completely ass-backward. But they're not entirely down to pure sexism on the parts of the males - Some encounter women who do endorse and support their ass-backward-ry.