My username is actually mrkloux (Mr. Kloux). It just randomly came to me one day when I was pretty young and I have no idea why. I say it like Mr. Clue, which, in all reality, is probably wrong.
When I was signing up for 8wr I can't remember why (or if this actually was the case, I was a few drinks deep and it was real fucking late) but it had me make an account name and a main name or something of the sort. I thought that the main name for the site was just some nickname shit so I mashed the first few letters of my username without paying attention. This is how MKL came out and now I have to live with it. Now I join the ranks of all the other three letter usernames.