What's an Rthling?

You know when you are a grown-up, but deep down inside you are still a kid? You want to do all the fun stuff grown-ups get to do, but you want to play and be goofy like you did as a teenager. Well, this name is a product of my time as a full grown adolescent.
I've always had a fascination of personalized licence plates. And Marvin the Martian has always been my favorite cartoon character. So when I had a green Dodge Neon, Shawn had a graphic of him in my back window. I went through a ton of clever letter combinations trying to think of a cute licence plate. I finally settled on RTHLING. It sounds like "earthling," but only has seven letters. Although I never got around to having the plates made, I got some rockin' mud flaps one year from my sister with Marvin saying "BACK OFF!" and my father-in-law bought me a beautiful key chain that ended up getting swallowed by my mom's house. Eventually I had one I used for a long time that said "keys to the mother ship."
So now you know. I'm just a big kid.