Mine is simple too. I live in North Carolina, and I have red hair. Well...I used to. Now it's turning blonde. But I don't really want my name to be "Carolina Blonde"!
In the rest of my online existence, I am "Unkoine". I made up that word, because I was desperate for a short name in yahoo. "Koine" means "common" in Greek. I'm uncommon, so I'm "Unkoine". I once spoke to someone online who speaks Greek, and they told me I should have called myself "Akoine", but I decided to stick with my original choice. I've never met another "unkoine", because I made up the name.