Mine was a second choice. Among my musician friends/associates, I am generally referred to as "Chief" or "the Chief". But, both of these were taken when I registered.
So, my fallback was a nickname bestowed on me in the early 1990's by Jim Martin (Faith No More) and Dino Cazares (Fear Factory/Brujeria). Sorry for the name dropping, but it is an important element of this story...
Jim, Dino and I were on a three-day drinking binge and I started to develop gout. My foot hurt like he--, and it became difficult to stand. Jim and I were shooting pool at a dive bar and I could barely move. So, Jim cut off the toe of my boot with his pocket knife to give my foot room to "breathe". He commented, "Damn Chief, you sure got a funky toe." And that's how it came to be.