What's the deal with your nickname? How did you get it? If your nickname is self-explanatory, then tell everyone when you first started using the internet, and what was the first thing that made you say "wow, this isn't just a place for freaks after all?" Was it a website? Was it an email from a long-lost friend? Go on, spill it.
My nickname is my name. I am simply not smart enough to remember any kind of made-up handle, and I am also not strong enough to resist giving myself a badass supercool wish-fulfillment D&D-type name that would brand me as a superdork. (Not like yours, dear friend, oh no. Yours is a paragon of wit and restraint.)
Plus it makes me shut up when I wanna say something really stupid.