Why can't women just get anger out of their system? Guys will punch each other, tell each other off, yell, or whatever else, and the anger's gone. Hell, I've seen guys physically fight and immediately go get a beer together. Women, on the other hand, sit there and seethe. They'll do the silent treatment, the sulking, and anything else that doesn't actively address the problem, and they'll keep it up for days.
The worst part is that they won't just direct that anger at the intended target. They get into a bad mood, and everyone's supposed to suffer. The target may be the focus, but anyone else is fair game for the anger, especially if they had the misfortune of being friendly with the target.
The funny thing is that the target would often be willing to atone and change, but women won't just address the issue, generally. They hold a grudge for awhile, and everyone suffers. Sure, guys don't generally fix the actual problem, but we focus our anger, get it out, and move on.
Yes, I'm aware that I've generalized this issue and there are more complex things to consider, but it just gets me every time...especially when I can't even figure out what has a woman so pissed off.