My current username is random.
I originally wanted Eni (which was the nickname that Ryan called me and took from my first username, EnirevTux), but it was already taken, so I added what I can think of at the moment, which was -shi (which unintentionally, means "death" in Japanese if I remember correctly).
Enishi is also the name of a character in Rurouni Kenshin (Samurai X), so yeah, it's not entirely random I guess.