I thoughtlessly used it earlier today, and then a few hours later I realized it should be on that list of words I'm not going to say anymore. Except to talk about the word itself, of course.
It's sexist because it takes a roll or behaviour that is coercively assigned to women and then equates is to anything bad.
Sometimes people say, "Balls!" as an explitive. I wonder if that's bad, too. What if people said, "Ovaries!"? Maybe using a term that's associated with women in any way is automatically (more) bad since women are the (more) oppressed group.