It's not that hard. You type --USERNAMEHERE. I think it has to be 2 spaces, then again, that's just how I figured it out. It could also work with 1, know knows?
Wrong it is not spaces. Just type your username and then put an underscore after it so for example "username_" and you will add yourself.
I can't believe you think so highly of yourself for just adding yourself to your friends list, and more so for actually making a thread to show off your so called leet hacking skills.