This season so far, I've noticed 3 different kinds of negativity.
The Pregame Jerk: This person usually cool, calm, and collective up until about an hour before the game. Then injury reports come out, over analysis finally gets to this person, then out come the snarky comments of house such & such player sucks and how we have no chance because so & so is out of the game, their world literally becomes a dark and awful place directly before gametime.
The Midgame Jerk:You usually hear or in .NET's case read these types of responses, OH MY GOD WE'RE HORRIBLE!!! FIRE THE COACH!!! BENCH HIM!!! and my personal favorite NEED MORE EFFORT!!!
The Postgame Jerk: This person usually feels like the world literally just ended after the game, win or lose. They can't help but feel some type of way in either way of extremes, either they're uncontrollably happy, or unbearable to others while they're pissed.