Because all the best swear words have 4 characters or more. d;^)
I started using ZZZ a long time ago, then switched to -Z- when I noticed others using ZZZ (duh). I too only enter my initial if it's a GC score. Learned that from NES. Go big or go home. For 3 character games I use OZY and DIO a lot. For 10 character games I get a little more creative. I generally try to stay within the theme, sort of. For GB I used PUFT DADDY a lot. For GOT I used STARKSTER and GREYTELL, among others.
I'm not much of a SW nerd. Assuming 10 characters, anyone have any cool suggestions for SW? Also, are there no CFF crew here? Last I heard, you had to swear to always use CFF or they wouldn't let you in the club.