I was posting something else when I thought of this thread (why does this always happen to me?).
Sooo...how did you come up with your nickname? I've heard a few explanations of a few nicknames here and there, but I'm sure more than a few of you have wondered why I call myself "moonbunny" and what the heck it means.
MoonBunny actually comes from a few things...it comes from the fact that I was born in the Chinese year of the Rabbit, and even before I knew that, I've always loved and collected stuffed bunnies.

Plus, I was an Easter-week baby (born on a Maundy Thursday) , so many of the stuffed animals I was given as a baby (though none have, sadly, survived) were bunnies.
The Moon part comes from the old fairy tale about the Rabbit in the Moon, which I've heard different origins for. I've heard it's either Japanese or Maya in origin, but either way I like the idea of a rabbit in the moon better than a man in the moon.

Also, when I was in college, I was a big Sailor Moon fan, and Sailor Moon's Japanese name, Tsukino Usagi, means "rabbit of the moon."
My ex-BF made me a wonderful drawing based on an idea I gave him of a rabbit in the moon, the scan of which I used as a logo for my LiveJournal. He later sent me the sketches and the actual drawing he made for me via snail-mail, which was why I fell for him. Although sadly, we're not together anymore, the MoonBunny picture (which is what he and I called it) still remains on my wall, a reminder of the good times we had.
And now I'm getting all teary, so here ends my explanation of my nickname. What's yours?