Atheist: I'm an atheist.
Closeted Atheist: Oh, well, I think you're going a bit too far. I mean, you can't conclusively prove that gods don't exist.
Atheist: So, you are a theist?
Closeted Atheist: Of course not! I'm agnostic; I don't claim that gods don't exist because that's a non-falsifiable claim. It's not possible to prove a negative.
Atheist: I agree and take the same position. So, why…