MaKaKaZo is right, and something that happens as a result of people calling other racers "aliens" is that they treat them as if they are not human. In some peoples eyes, "aliens" are not allowed to make mistakes, they can't say or do the wrong things, because they are perfect. So when they do make mistakes, or do something wrong, then they are crucified for it. Friendly banter is fine, but it's when you sense that people are waiting for you to make a mistake that it becomes bad. I gave up taking part in any kind of LFS league since I encountered it, I lack the ability to detatch myself from that kind of thing and I take it personally, because I'm human, not an "alien".