Very simple.  My name is Mike.  I'll let you figure out the rest.
Actually, it's simply because it's my login name at work.  I register everything as mrodgers, that way I can't forget.
My nick I use on the server....  I couldn't think of anything way back in the S1 demo.  I was lousy, so I just made it "Lousy".  We also use this at work, calling everyone "lousy".  Don't know who originated that at work...  I had joined GURU for a while and during one of their "training sessions", I heard on TS someone say "you need to change your name, you're not quite lousy anymore".  So, I had a Honda Nighthawk motorcycle at the time, thus I picked NightHawk.  My number I use, 83, comes from the car I happened to select in NR2003 when I raced that.  It was just a coincidence that my Honda Nighthawk was a 1983 model, thus I'm also sticking with the number 83.