I get pretty competitive on Call of Duty when playing online. I have a mic pretty much only to hear other people talk. I only talk if talked to. But if I do have my mic on, and I know it's on, I watch what I say. Like I said, I am very competitive for online games. On CoD I have a 'policy' where if I have 3 more deaths than I do kills, I leave the match. I like having a good kill/death ratio. It's a personal achievement for me and I don't like it when someone tarnishes it. But I keep my mic off, still doesn't stop me from saying insults and whatnot (I am getting better at using less 'foul' words), but I play fairly and don't ruin it for my fellow players.