"Speaking in questions" is the annoying habit, in spoken English, where one (typically a woman) inflects (raises) her voice at the end of a sentence, as if she were asking a question.
It generally means that she is not sure about what she is saying.
Terri: I find it hard to believe that you find my speaking habits annoying?
Jim: Yes, I do.
Terri: I have doubts about the future of our relationship? It is as if you don't care?
Jim: Duh. Maybe you should stop speaking in questions.
Using a spam filter as an explanation for ignoring someone.
Jim: My mother-in-law
emailed me a invitation for dinner, so I just ignored it.
Larry: That's gonna make her mad, ignoring her like that.
Jim: I'll just say that my spam filter
thought her email was spam
, and it got trashed.
Larry: That is a helluva exspamation.