Not very original but my nicknames are:
Tanc - which is a shortened version of my last name. I used to spell it with a "k", but that's not how you spell my last name. So, now I'm Tanc.
JT - Another original one. Simply my initials. I used to get JT the Bigga Figga (in honor of the rapper) and JT Snow (not for the baseball player, so you figure it out
) when I was in college.
J-True - Very few people call me this, but I like the sound of it.