If u feel bored of your current username, why not change to new one?
$ usermod -l new_name old_name
Then you need to set a home folder for that username, since I have changed one of my own username, now I will need to rename my old home folder to new username home folder to reflect it
$ mv /home/old_name /home/new_name
$ usermod -d /home/new_name new_name
Note: make sure you don't login to this user, any process of old_user must not be running while the command is executed. Well, better to run it under your root account.
Have fun!@