Radi. Short for Rademacher, my surname.
When I started playing football there were 4 guys, including me, with the same first name. My coach thought of nicknames for each of us so that's where I got mine. That was almost 22 years ago. The nickname stuck and basically everyone except my mom, sister and most of the bosses that I've worked for calls me that.
I actually prefer people calling me Radi.