Seattle Seahawks fans.
Why's that?
Spamming the Super Bowl thread on another forum I read with constant score updates (at least so long as Seattle were winning), repeatedly claiming they would repeat, and then saying that the Patriots win was meaningless because of Deflategate and that the Seahawks would make the Super Bowl next year.
To be fair basically all football fans are obnoxiouse like that.
"Obnoxiouse"?
Also, DLC that are basically just cheats. I buy the complete edition/game of the year edition/whatever the fuck it's called when all the content is in one place edition of a game, install it, start a new game, then immediately have to exit back out and uninstall a bunch of the stuff because the game dumped a pile of free stuff in my inventory that completely breaks the early game and ruins a big part of my sense of progression for the first several hours.