I usually just say something like, "I know. Koalas, am I right?" And then when they look at me like I'm insane I continue with, "Oh, I thought I was allowed to insert my own noun - like Mad Libs. Were you talking about something else?"

The only people who call women "females" are misogynists, so you're totally right.

Whenever I hear somebody use female as a noun while referring to humans, it is an immediate sign to me that whatever is coming out of their mouth will be deeply rooted in misogyny. I have yet to be wrong.