Certainly, there are some little idiosyncrasies in the opposite sex that can drive you up the wall. Guys are stereotypically not great communicators; they don't show a great deal of emotion; and they're always leaving that seat up. But did you know that there are things women do that men absolutely cannot stand? One thing that ranks high on guys' list of pet peeves is being automatically expected to know what's wrong with you without being given any information or guidance about the problem. Men aren't mind readers, and all those clues you've been throwing out about why you're mad may have been lost on him, regardless of how obvious you think they were. In fact, he knows he's supposed to be deciphering those clues and getting more and more frustrated when he can't.