So I decide for the 4th game: no more ZvZ for this session. So the first guy joins and instantly changes race to zerg. I politely state that I've played 3 ZvZ's already and want to play another MU. He leaves and everything is fine.
Now I keep on kicking zergs and telling them why, since I'm a very polite guy. Now after the 7th, yes 7th, zerg joined my game I was like fuck this. From now on I'm gonna be one of those who includes "No Z" in the gamename.