Believe it or not, my username goes all the way back to childhood, when I was 3 years old. We had a gravel driveway growing up, and for some odd reason I liked to put the rocks from the driveway in my mouth and ended up swallowing a few I had in my mouth. My mom panicked and took me to the hospital to have the rocks removed.
From there forward, my parents nicknamed me RickRock and it stays with me to this day. I even had RickRock on my license plates for many years starting when I got my first car at 16. So.......38 years with this username!