That's a proper username. Having a story behind it makes it more meaningful. It doesn't matter if people don't get it.

I have a story for my username. I kind of stole it from my older brother. He and a friend had this idea to sell energy drinks on college campus on foot from their backpacks as a sort of guerilla sales technique. They also talked a lot about branding and they wanted to create a slang word for energy drinks, "crizzo". They were going to call their business King Crizzo and I wanted to help with brand awareness by adopting it as my username.

Of course the idea never actually went beyond talking about it, but I kept the username anyway. Eventually I dropped the King part because people would call me King for short instead of Crizzo, which I didn't like.