I thought of this before my grandfather died.
He came to my orchestra concert when I was 10.
He thought i did good, so he said "that was a socko performance." I was like "wut" he said that it was a slang back in the 30's, it means "good" or "excellent". so, i thought it was a cool name and i used it on Halo1 and runescape. I used a different name for Blockland until the beginning of 2008, then I changed to Socko. :D
I'm not good at telling stories, meh.