Online, I have a bad habit of referring to everyone as "m'boy" or "m'dear." Not entirely sure why or when I began using those terms, but it must have stuck with me. I've also caught myself calling people "hun" a lot here lately, but I suppose it does let people know you're friendly. Or creepy. Either works for me, really.
Offline, I tend to have special terms for people who annoy me. It starts with dip, and y'all can fill in the rest with your imaginations. :D